@Squankum, in an effort to reduce stress in my life I avoid going to auto parts stores for actual auto parts. I buy supplies for fluid and filter changes but parts for my mostly elderly vehicles are a dilemma. It's also difficult to find parts like bearings, as opposed to assemblies that come with the bearing in it.Bob, good thing you ordered that bearing online! I have a friend who did just that thing with an idler pulley a few years ago and he still tends to use brick and mortar stores. O'Reilly's had the bearing. The computer showed they had the bearing. But the kid insisted on year... make... model... and that bearing couldn't be looked up THAT way. I think my friend had to throw a minor fit just to buy an $8 bearing.
Those polished runners aren't just for "ooh, shiny!" I learned recently from David Vizard's books that they keep heat out, which is a good thing. He was doing it in his Mini racing days and his competitors just thought he did it for looks.
I watched both videos all the way through. I don't recall him mentioning why he didn't want to remove the runners but I suspect this wasn't his first early C4 rodeo. I concur with the OBD1 port diagnostics not being real helpful. Back in the '90s I bought a software diagnostic package that came with an OBD1 dongle and you ran the software in DOS mode on your laptop (bought a refurbished laptop just to use with this software). It never found a code and basically couldn't diagnose any engine problems. Took the car to the Chevy dealer, hoping they had a better diagnostic machine. They spitballed a valve job as the cure. I've never ever seen valves go bad while idling at a stoplight. My problem turned out to be a broken wire in the Mass Air Flow sensor.Bob, I first learned about those injector clips watching South Main Auto. C4 Corvette would not start when hot.
Shorty, I suspect it's more than us four.“Return to Sorting shoe collection”
Y’all sound like me and Mrs. Shorty.

Yet another classic "Heinism". Pretty sure the Farside card folks would pay for that text..ha.After I assured her I was making progress (and showed her the first fuel rail with new injectors installed), she asked if I was having fun. I told her I was and she went back to sorting her shoe collection.
@Squankum, I have tried that technique and it did work. Last time I moved the A/C compressor I dropped that weird long bolt. It made a weird sound, hitting something non-metallic. Turned out it landed in the fan shroud where it blended in perfectly with all the flat black stuff around it."The C4 Corvette engine compartment is tight. So tight that dropping a 10mm wrench at the front of the engine means there is a wrench hiding out of sight and it will only fall to the ground when the car is going more than 70mph. So tight that dropping a T40 Torx bolt at the back of the engine does not make a sound and does not come out the bottom. Time to get out the HF Borescope."
Like you say, it's an early modern car!
I don't know where I learned it, maybe this thread recently, when you're really stumped about where something went, drop another one in that spot and see if you can watch where it goes.
Me, I've just gotten sick of dropping things. That's the main reason I'm so gaga for locking extension for sockets. Why ever chase a socket again?



Tom, I remember picking up my brand new 1968 GTO from the dealer after they did their 1,000 mile service. I believe they successfully changed the oil and filter but for some reason sprayed the driver side of the body with undercoating and added a full-length scratch to the passenger side. The shop was closed for the night so I couldn't do anything but drive it home. They did two more small adjustments to the car, removing the cigarette lighter and disconnecting the 47 vacuum lines on the engine, ensuring I would have enough of the 350hp left to creep home. That year was the beginning of the bizarre attempts at emission control.Your OBD-I and tight engine compartment tales ring familiar. An arms race broke out in the seventies between automakers and emissions regulations. In the early days, the technology was way behind, and those cars were nightmares to work on. I still can't believe what it took to pull the engine from my '84 Prelude, labeling the spaghetti pot full of vacuum lines and whatnot in the process. I think it's a myth that cars are impossible to work on these days. I wouldn't say it's as easy as it was in the good ol' days, when you could climb into the engine bay next to your motor, kick back in a recliner, whip out a hammer and a crescent wrench, and rebuild the whole thing in a day (if you believe the old-timers...), but it's a hell of a lot easier than in the eighties and nineties, when onboard diagnostics and computer controls hadn't caught up with the number of sensors and bleed-offs and vacuum systems and whatnot required to meet emissions.
OBD-I may have been relatively worthless, but I've solved countless problems thanks to OBD-II, a $15 code reader, and a web forum. Everything is now sensor controlled, and diagnosing sensors has never been easier.
For another forum, I once made a graph with two axes to describe the difficulty of working on every two and four-wheeled vehicle I'd taken a wrench to. On one axis was complexity of the vehicle, on the other axis was how badly you wanted to start the vehicle on fire and walk away when required to work on it. Complex and simple would be the E46 BMW. Relatively not complex and simple would be a KTM dirt bike (8mm and 13mm sockets remove nearly every fastener on the machine). Complex and frustrating would be eighties Honda or either F150 I've owned. Simple and rage-inducing would be 1960s Rokon 2WD dirt bike. It was a fun exercise, and where things placed on the graph wasn't always where I would have thought beforehand.


Dennis, I'm glad you like that one.Yet another classic "Heinism". Pretty sure the Farside card folks would pay for that text..ha.
Dennis, I feel like the phone/app/social media obsessed generation is the obvious target for EVs. No need to have the conversation that includes: "No, I've never checked or changed the oil. That's too much pressure!" On the other hand, I'm attracted to the instant torque, simple drivetrain and avoidance of gas stations. As little driving we do in our dotage, an EV makes perfect sense to almost anyone. Anyone but Liane. She is absolutely convinced every time we use the car we would be trapped with no charge left in the battery to run the A/C or even open the windows. "Why do I want to kill her?" In the past five years the longest trip we have taken is approximately 100 miles to visit our daughter and her family. Telling her the new EVs have a multi-hundred mile range has no effect. She knows how long a flashlight battery lasts in a power outage -- and that's why we have all those candles!Another random thought Bob. I've been pulling engines and swearing at cars since I was 16, so some 40 years now.
I also get mildly to violently irritated at design/engineering choices I see made in the various cars I've pulled apart, particularly if I have to resolve them in .25 inches of work space. This is why the EV we also own brings out small chanting cherubs when I put it up on the hoist and see the 2000 odd moving parts it does not have compared to our ICE cars. I believe our 2018 LEAF has about 8 moving parts (a rotor, reduction gear and a few bearings bathed in oil) to the axles.
I had our 2003 CRV (still in play for my 19 year old daughter) on the hoist to weld up a broken exhaust hangar. It was ringing loud enough to prompt other motorists to deliver the "you should get that checked" advice at intersections..ha. That reminded me of all the work I've had to do on the engine/drive train/exhaust/cooling/fueling systems etc. to keep the car running over the years.
Does my appreciation for the EV (and ya, it costs about $17/month to run) make me a lazy guy? Also, because it is stupidly quick from 0-50km/h, I frequently leave much faster cars behind at stoplights...which answers the question of my diminishing maturity in old age![]()
Dennis, I don't push very hard to change vehicles. Liane is still upset I sold her 1993 Buick Regal because it had zero technology. She is almost comfortable with the PT Cruiser after almost 20 years. I still have to show her how to turn the lights and wipers on and assure her there is nothing under her left foot that needs to be pressed for high beams. She drove the '72 Corvette many times but refuses to drive the '87 after 31 years in the family. She has driven the Cadillac twice but has requested a parking lot refresher before driving it again. Yeah, I don't see us acquiring an EV anytime soon. In spite of her refusing to put gas in the car -- she gave up trying after failing to jam the diesel nozzle into our Lincoln Town Car back in '84 -- and has me or an attendant do it.Ya. Getting left behind sadly is a stronger motivation than more lofty aspirations of carbon reduction…ha. Our EV is a lot shinier than the other cars for some reason ?
My wife was a bit skeptical at first but our not-so-**** LEAF has become her favorite drive now. She says “it’s zippy”. I also think the Bose sound system (which is not terrible for an OEM system) has something to do with it.
That said, she is 100% not using the Pro-Pilot self driving features. Trust issue there. I look at it as just another driving aid, like cruise control and welcome another set of electronic eyes on the road.
@Squankum, thanks for the heads up. I just picked up a vial of Prestone orange thread locker so it will be used on the locking extensions. They are currently back-ordered along with the flex head Pittsburgh Pro ratchet.Bob, a note about the HF locking extensions: like many things HF, it would have cost more if they built it right, so it's kind of a kit, too. In this situation, there are tiny (tiny!) hex head set screws on the sliding collars and they need to be removed and Loctited.
Ask me how I know! I think I've read about it on GJ, too, but the first year or so I had mine, I was using a long one and a small air ratchet to speed some spark plugs out of the Durango and in the strobe-like effect of my LED headlamp (you see, most LED things are never truly "on", it's a question of how many times/second they are on) I saw the set screw leaving the extension while it was spinning and taking flight. Amazingly, I found the tiny thing and everything got reassembled.
When I reach for an extension, it's locking extensions first, unless I really need a wobble, or the sliding collar of the locking collar is really going to rub on something I care about. Also, the HF extensions (at least the year I bought them) have some knurling elsewhere on them, making me wonder why ALL extensions don't have some danged knurling!
I also bought a set of three 1/4" locking extensions, Gear Wrench, off of amazon, and they're good, too. I did blow one up during a water pump job but I was absolutely abusing it.


@Squankum, I have been pretty selective automating things. There are three garage door opener switches at the entrance from the garage to the house. No feedback, no voice control, no app. However there's a remote keypad next to the first garage door and its code is the phone number her parents had in the 1950s. Back when the number started with "MOhawk," aka 6-6 on the rotary dial.Bob, you're like her shabbos goy, but for all technology, and seven days a week!
SHABBAT GOY - JewishEncyclopedia.com
Complete contents the 1906 Jewish Encyclopedia.www.jewishencyclopedia.com
Both of these do not really get into how peculiar it can all get in practice, for certain people. And modern technology is creating workarounds, to... uh....
Kosher light switch:
Okay, the more I read, the more confused I get. The first two links above are kind of mundane and glossing over the real world practices and past, based on what little I used to know/ thought I knew.
What is she going to do when you're gone?!
It's a good thing I never tried illegal drugs. It has left me with just enough money to feed a small tool addiction. A sign of my addiction was feeling good paying for those Gearwrench extensions with Reward Points.Locking extensions of the 1/4" variety. (The little red bands are slightly grippy plastic, and also cover those set scews, IIRC.)
GearWrench No. 81003:
GEARWRENCH 3 Pc. 1/4" Drive Locking Extension Set ...https://www.amazon.com › GEARWRENCH-4-Inch-Driv...
Join the club. My Advance folks know I'm just doing it for me, but they give me the commercial discount on the bigger stuff anyway.P.S.
I get messages from Amazon basically saying, "Are you sure you're not a professional repair shop? We could get you better deals if you were, you know..." Alas, I'm not one to fib about that sort of thing.
The parts clerks at my Advance Auto have asked if I'm a pro, too, because of how often then see with me my 14.5 quart oil pan/container. I've had to explain, several cars, and one driver doing 30,000 miles/yr, if not 40,000, and 5,000 mile oil change intervals... automatic transmission, transfer case, differential, power steering, brake system fluid changes...
brainer.






@Squankum, I spread myself pretty thin, using Amazon and Rock Auto for most of my parts with an occasional purchase from an online site that has a better price or has the weird part I'm looking for. As far as my fluids and filters goes, we do about 2,500 miles a year spread across three vehicles. My oil changes are based on days of driving instead of calendar changes so the '87 Corvette might go three years between oil and filter changes and the Cadillac gets done every two years. The PT Cruiser gets an annual change but it never goes 3,000 miles in that year. I change the oil more from water/acid contamination from all the short trips our vehicles see -- only the Cadillac sees long (40-mile) trips.P.S.
I get messages from Amazon basically saying, "Are you sure you're not a professional repair shop? We could get you better deals if you were, you know..." Alas, I'm not one to fib about that sort of thing.
The parts clerks at my Advance Auto have asked if I'm a pro, too, because of how often then see with me my 14.5 quart oil pan/container. I've had to explain, several cars, and one driver doing 30,000 miles/yr, if not 40,000, and 5,000 mile oil change intervals... automatic transmission, transfer case, differential, power steering, brake system fluid changes...
@kaymccampbell, I meet new Advance Auto guys on almost every visit. Pretty sure five or six of them have retired in the gaps.Join the club. My Advance folks know I'm just doing it for me, but they give me the commercial discount on the bigger stuff anyway.
@Squankum, sorry I missed your question. Yes, I get 5% back on a Chase Amazon credit card for all Amazon purchases. I do my best to avoid paying interest so I pay the full balance every month. Not sure the Amazon card has better or worse Annual Percentage Rate (Purchase APR 15.74% Cash advance APR 26.49%) but nothing I want or need justifies that add-on.Who's giving you reward points? Amazon?
Kirk, in my youth I had those relationships with the owners of a half-dozen junk yards and a non-chain parts place. Also on a first name basis with the manager of the parts department at the local Chevy dealer.My OReilly's guys (and gals) see me often enough that we ask about each other's family. I dealt with the one guy so often, he had my phone number memorized, all 10 digits. Before Covid hit, I'd have to drop by at least 3 times a week. Used to be my O'Rewards was usually about $50 a month. I hit $350 after one visit. Now,...it's usually about $5.
Rick, my procrastination gene is dominant so I wait until multiple failures present themselves before I get off my ****. In 2015 the HVAC system in the Corvette wouldn't change the air delivery vents from the floor to the dash. A little time with Google led me to believe the Air Mix Valve Controller needed to have a couple of resistors replaced. The ones from my car (background) look pretty bad.Wow, you really know how to tackle the difficult engine projects! I'm impressed by your attention to detail and replacement of future-failure items while you've got it torn apart anyway. It certainly takes longer, but as long as you've got the time do it right, it probably saves time in the long run not having to disassemble everything again later.
The polishing looks amazing! I imagine time spent doing something you enjoy like that is good for your soul (and cheaper than a trip to a psychologist).
I had to laugh about some of your descriptions of Liane-isms. I think she must be related to my wife!




Justin, I don't really understand the logic of burying things behind the engine. The engineers were kind enough to put a giant clamshell hood on the car so you can actually work on it. I need to keep working without crossing my fingers but when I'm done with this job they will be double crossed and taped together.That valve is really buried. Glad you found it. Hope it solves your issues.
Gerry, I expected it to be off but it wasn't all that bad. I did plug the HVAC fitting once I found it disconnected (but didn't know that's what it was). I think the Idle Air Control (IAC) module on the throttle body takes care of some of that.I'm guessing the idle speed may be off now...
BTW...Those resistors have gotten warm frequently. (Mr. Obvious speaking)
Kirk, I am pleased to be at this point, with one more fitting expected today that will let me repair one last broken line. I say that like I think I'm done but then I have this gas tank issue. It holds vacuum for months so I expect there's a purge control solenoid problem. I already replaced the tank pressure control valve and that had no effect.Nice find on the vaccum leak
@Squankum, Chevrolet put two diagrams on the radiator cover, one showing where the belt goes and the other where the emission hoses go.There's an old saying, the map is not the territory. Well, that schematic drawing is good, but it's not even a map! I wish they'd give us schematic diagrams like that, and also a real map of where these parts all really are, maybe an illustrated photo, etc etc. Or even just an illustration of "holes in firewall and what goes through each."
That being said, as a general mechanic fund of knowledge thing, that's about where I'd be looking for the vacuum hose for the HVAC. Once again, this car is a bit modern in how cramped things are getting. Let's call it 9 lbs. of **** in a 10 lb. bag. (Compared to today's cars, which are between 9.5 and 11.)
Oh, and internet busybody hat on -- plugged that distributor hole with a paper towel yet?!


Gerry, I have a rather large collection of terrycloth towels in the garage along with a pile of cloth diapers. Maybe it's time to use them for these kinds of plugs.After last weekend, I've banned any kind of the blue paper shop towels around intakes or any other cavity on an engine. I was changing the belt and air cleaner on the Polaris Ranger, needed to wipe PCV crud from inside of the AC housing . I must have snagged a piece of the paper shop towel , didn't see it. Finished the belt change, started it and got every indication that the cam chain had skipped a tooth (supposedly possible if you roll the engine backwards while prying the belt on - thanks Youtube for that red herring) . Pulled the plug, peered into the guts and saw pieces of paper towel (not a lot, just a small bit. Still wouldn't run without backfiring, pretty sure the sensors or the IAC in the fuel injection were unhappy. I let it heal for a while, while I cooled down, eventually it started and is back to normal now. ARRRGH





Someone I worked with used to use old bath towels to plug inlets n stuff. He had one shoved into the big rubber boot on a huge Detroit. Can you imagine how little a Roots blower likes inhaling a 2x4' chunk of terrycloth? I make wooden covers and find rubber and plastic caps for things.Gerry, I have a rather large collection of terrycloth towels in the garage along with a pile of cloth diapers. Maybe it's time to use them for these kinds of plugs.
Isn't that how it always goes? Our well water pressure tank started leaking a few months after the warranty expired, but our water heater is still going strong. You were smart to add those unions -- hope your replacement goes quickly today.I installed this water heater, which has a 6-year warranty, in February 2016 so it has outlived it's life expectancy by five months. When I installed it I planned for its demise, arranging the plumbing for a quick swap (using the exact same water heater).
Uncle Willie, there's a giant warm puddle of water behind the house. A little extra chlorine and I'm fresh as a slug,But.....no shower....??....
Kay, I just checked and there's a plastic plug collection available. Roots blowers are picky about what they eat. Pretty spectacular when they puke.Someone I worked with used to use old bath towels to plug inlets n stuff. He had one shoved into the big rubber boot on a huge Detroit. Can you imagine how little a Roots blower likes inhaling a 2x4' chunk of terrycloth? I make wooden covers and find rubber and plastic caps for things.
@Squankum, by the time those hand towels make it to the garage there's not a lot of loopy left. Perhaps some of them will end up on the valvetrain.Could have sworn that soft loopy towels are just the kind of lint that shop manuals have always warned us about!
Speaking of minor precautions, Bob, are you going to drape some red shop rags across the exposed valvetrain areas on both heads?
Yeah, I'd be careful about engine intakes. Some kid in the midwest lost his hat.
Damn, another maintenance item I've neglected. I tried to remove it using a breaker bar and 1-1/16 deep socket but it just spun the water heater. The HF Earthquake impact gun removed it so fast I thought it broke. Apparently I waited too long and there is no trace of an anode attached to the cap. When I do tackle the anode on the new water heater I will use a hole saw to start -- that's a lot of shredded Styrofoam just using a straight screwdriver.Bob, did you ever check the sacrificial anode rod of that water heater? Does it have one?
I discovered such things a few years ago and realized that I had never heard of such a thing, had just heard people say that every ten years, you buy a new water heater because the old one fails, and it dawned on me that from the early 80's to just the other day, roughly speaking, I'd done nothing but cram automotive knaweldge into my noggin and didn't know about much house stuff!
Just checked my own thread (The Underground Lair) and I did not discuss anything I did when my water heater acted funky. (Replaced two heater elements, and maybe the thermostat, and a new anode rod. The old rod was nearly done for.)
My googling at the time, IIRC, found some, but not a lot internet chatter about people checking on or replacing these things. Pics of my withered old rod (ahem) are on my old phone, so no can do. Here's an amazon listing for a new one:
I think one thing that deters a lot of homeowners from peeking at their rod (ahem) is just the difficulty of loosening it. We here at GJ are rich in impact guns and sockets, though, and it's a no-brainer chore.
This Old House video about them:

My bad. I wasn't playing a Mandolin. I also don't strum my Mandoline but if I did, it definitely would be a mess.

Rick, I rarely purchase extended warranties because they seem to run out when the thing dies. Turns out I need to install another union for the pressure relief valve pipe -- it doesn't line up well enough to get the pipe and compression fitting threads to engage at the same time (probably because I installed a pan under this one.Isn't that how it always goes? Our well water pressure tank started leaking a few months after the warranty expired, but our water heater is still going strong. You were smart to add those unions -- hope your replacement goes quickly today.
Jon, the new one took exactly 1 hour to install, including removal from the PT Cruiser, unboxing and cleaning the floor where the water heater resides.Bob,
I hope you have a smooth water heater replacement today.
It's good that you thought ahead and put those unions in.

