Above 1200 Sq/FT The Salvage Garage
- Thread starter Strouty
- Start date
Wokspaces above 1200 squarefeet.
csp
Well-known member
How's that working out for you with the vehicles you've purchased?
My newest DD type vehicle, one of four, is 19 years old. There are several others that are toys. I do not want anything with a screen in the dash, cameras everywhere, heated cupholders, etc.
Only one of these four was purchased new and has been under my own driving/maintenance routines since new. The other three were in excellent condition when purchased.
It seems to me like you need to buy better. Stop buying something that you think you can get running just because you get a deal on it. Those rarely work out to be good deals if you don't know 100% what the issue is and how to fix it.
When I first bought it, I knew the previous owner had basically rebuilt everything, I test drove it for about 30 minutes and checked out the normal things, with all the boxes checked off, I thought I was good. Then it was not coming up to full temperature, and would long crank once it got warm. Fuel mileage was bad, no smoke, no real leaks. Changed the thermostats, achieved operating temperature, long cranking got worse, almost wouldn’t start. That was when I bought the Tech 2 for setting the timing, then the Burb started dying at half tank. That was when we started to not trust anything the previous owner did, he had installed a gasoline tank instead of the diesel one, they are not compatible. While in there we replaced the fuel lines, then we found an issue with the fuel filter housing, so that got replaced. Then the injection pump started leaking fuel everywhere. That lead to installing a rebuilt pump and new injectors then we went from long cranks to no starts when hot. Changed the crank position sensor when we swapped the broken radiator and block heater. After finding that pouring water on the injection pump let it start we changed the fuel shut off solenoid and didn’t change the issue one bit.
I am sure there were other things done, I know we swapped in a new PMD in with no change as well, never had a check engine light or even a pending code, except for when we first started it with the rebuilt pump, but those went away after adjusting the timing and have never been back.
I may have to start from square one, it starts perfectly when cold, runs fine just gets terrible mileage and long cranks to no start depending on how long it sits after being hot.
I am sure there were other things done, I know we swapped in a new PMD in with no change as well, never had a check engine light or even a pending code, except for when we first started it with the rebuilt pump, but those went away after adjusting the timing and have never been back.
I may have to start from square one, it starts perfectly when cold, runs fine just gets terrible mileage and long cranks to no start depending on how long it sits after being hot.
Plastikosmd
Well-known member
- Joined
- Nov 17, 2016
- Messages
- 1,254
Most of this you have been thorough but maybe it has some hints:
www.accuratediesel.com
Not necessarily a “hot start” diagnostic as that seems to point to worn LP on net
there was a mention of bypassing the glow plug relay and adding a moment switch to allow glow plugs when hot to give that “boost” that is needed with poor fuel delivery at “no start”
maybe something to try
6.5L No-Start Guide | Diesel Troubleshooting Steps
Diesel truck won't start? Read our 6.5L no-start guide to fix stalling and PMD failures. We help you troubleshoot engine cranking issues quickly.
www.accuratediesel.com
Not necessarily a “hot start” diagnostic as that seems to point to worn LP on net
there was a mention of bypassing the glow plug relay and adding a moment switch to allow glow plugs when hot to give that “boost” that is needed with poor fuel delivery at “no start”
maybe something to try
Garage Coffee Roaster
Well-known member
I second the above post. I am not a diesel mechanic but, I understand mechanical things and am a google expert. 
It is a strong possibility that your injector pump rebuild was bad from the start. The guys from Diesel place forum said this:
It is a strong possibility that your injector pump rebuild was bad from the start. The guys from Diesel place forum said this:
https://www.dieselplace.com/threads/6-5-wont-start-when-hot.772481/
I would totally agree, except this problem was essentially across two separate pumps, the latest one has taken it to the extreme by not starting, the previous one would only long crank (maybe 15 seconds, then start). I know that we have no fuel delivery issues to the pump itself, just from the pump out to the injectors, it could be, but unless I am the one to redo the rebuild, how can I verify this without buying a NEW pump?
Garage Coffee Roaster
Well-known member
Can you test the pressure after the pump and before the injectors with a gauge? You could test it cold and after it is hot to determine if the pressure has decreased.
Plastikosmd
Well-known member
- Joined
- Nov 17, 2016
- Messages
- 1,254
good question
I have absolutely replaced a bad coil with a “new” bad coil
it also happened with a carb
I spent a ton of time chasing the wrong thing expecting “new” was “good”
I have absolutely replaced a bad coil with a “new” bad coil
it also happened with a carb
I spent a ton of time chasing the wrong thing expecting “new” was “good”
I know when it is hot there is essentially no fuel pressure after the injection pump, there is no smoke while the engine cranks. Before the injection pump, it has been proven to have plenty of fuel, the fuel filter housing has a drain valve and all you have to do is see fuel coming out when it is open, they only need maybe 3 PSI to keep them running. This is definitely injection pump related, pouring water on the IP would not change how much fuel the lift pump delivers.
I wish I could talk to someone that rebuilds these, it would be nice to know if there is a way to test for heat related issues while on the test stand. Seems that there would also be specs that say it is in tolerance or out of tolerance. I have no issue paying for another pump if it resolves the issue, of course Stanadyne no longer makes this particular pump, so all I can get is a rebuilt one or have one of mine rebuilt. I don't think I will use the same guy we used last time, especially if I put another pump on and it solves the problems.
rmack898
Well-known member
Check out hdiesel.com
Garage Coffee Roaster
Well-known member
Here is another thread on warm start problems on the 6.5. https://www.thetruckstop.us/forum/threads/6-5-warm-start-problems.14499/
As for a test ,another poster, suggested this:
I don't know enough about diesels, if this test would hurt your engine, but I thought I'd throw it out. Maybe somebody else could chime in on this..
As for a test ,another poster, suggested this:
I don't know enough about diesels, if this test would hurt your engine, but I thought I'd throw it out. Maybe somebody else could chime in on this..
I am going to concentrate on getting the timing within spec and see if it still does this before I go crazy. I also will add the clear line on the return to see if there is any air, but I don't suspect that I have an issue, if air was the culprit, it would still try and start, just run like ***.
Bob Heine
ALLIANCE MEMBER
I know next to nothing about diesels but wrote some manuals for high pressure hydraulic systems 50 years ago. If pouring water on a hot part solving the issue, it sounds like a critical tolerance is opening up, probably between the pump stator and case. Sounds like your pump rebuilder is cutting some corners (or failing to cut them).
86turbodsl
Well-known member
I seem to remember a friend of mine having the same problem on a 6.5 years ago. Same issue. Pump wore out and would start to make pressure when the pump was hot and dumped water on it. cooled the housing down and the internals were still big. would start then. it had that weird electronic pump on it too.
mybigwarwagon
Well-known member
Just install a refrigeration system on the pump. Or just stick a cheap window unit through the hood.
Alfman, are you here just to antagonize me? I am trying not to end up with the same result or make another running diesel not running, wouldn't that be working towards your goals for me? While I appreciate constructive criticism, I am not really sure what you are trying to accomplish.
kaymccampbell
Well-known member
He's an escaped argumentative bot from Reddit.
harley jim
Well-known member
I was wondering why it was anybody's business how many trucks or whatever a person owns, at one point I had 28 AD Chevy trucks, two of them ran the rest just sat there. I'll be damned if anyone said anything about it. Just saying!!!
xtremek
Well-known member
There's a fine line between constructive criticism and antoganism. And it's not like our hero in this story hasn't been going at this very methodically. And that he hasn't found multiple things wrong, and made corrections.
But you have to admit, you've done a lot to this thing, and I know I can't keep track of all of what you've done.
But my last thought is, I'll be damned if I let an inanimate object get the better of me. And that's not just "No", or even "Hell No", but "OH HELL NO!" Keep at it Strouty, and thanks for letting us ride along.
But you have to admit, you've done a lot to this thing, and I know I can't keep track of all of what you've done.
But my last thought is, I'll be damned if I let an inanimate object get the better of me. And that's not just "No", or even "Hell No", but "OH HELL NO!" Keep at it Strouty, and thanks for letting us ride along.
Not a bot. I think most of the posts on this thread are enabler's to keep him going. In a previous thread, he would buy things to flip or keep, and then be broke for a while, complain about it and not know how to fix. Now he seems to be some kind of expert on everything. He's like a kid given a pocket full of money and let loose in a toy shop, unsupervised. Then everyone here fawn's over it (in a weird way, me too), encourages him. Wash, rinse, repeat. His dad and especially his stepmom have him fiqured out as somebody with no direction, yet he blames a lot of it on them or ex-employee.
Back to the burb, I got an answer to the question about testing the injection pump, basically they would need to run a longer test and wrap the injection pump in a thermal blanket while increasing the thermostat to heat the fuel up. That makes me feel better that they can be tested for heat failure. I am not sure I would go back to the same "reputable" rebuilder without having a discussion with them to help bring my trust back. I have found a GM NOS crank sensor, everyone that knows anything about these engines says to only use the GM version. I think that NTK was the maker for the GM part, but can't prove it yet. I would be curious if they would tell me if they were the OEM for the part or not? I will have to send an email out and wait. I have confirmed stock on the NOS injection pump, I now just need to figure out what pump number is better to have, this particular pump is for a 2000 model, but every pump (except the very first one in 1994) has just been superseded by a newer version, so it should fit regardless of year and ECU/ECM. It also looks like they didn't do any sort of upgrade beyond 2002 and the one that I am looking at is a very common one, but technically second to last generation. Interestingly, the Hummers got a Caterpillar control setup at one point with a specially upgraded pump, but they never really went into all out production, this was for the P400 engines that were supposed to be the direct replacement answer to the duramax engine. I would love to get my hands on one of those engines.
This week, on Thursday. I do not think I will be attending, but I haven't officially decided yet. There are people that attend that I haven't seen in a while, would be kind of nice to at least visit for a bit. Of course there tends to be something that catches my eye, so it is always dangerous to attend.....
xtremek
Well-known member
I'd still go for the ice bag first, since that doesn't require any "outside" help. Good to hear you took the weekend off to regenerate. Hopefully that is enough to get you moving forward again.
rmack898
Well-known member
jack stand
Well-known member
There's a big difference in "fawning" and supporting, and maybe even being understanding and sympathetic to a lot of situations that we've all battled.
speedracer_uk
Active member
Agreed, who here hasn't gone all in and bought more stuff than they needed at the time and ended up with a workshop full of bits. I know I have. More than once! I buy classic bikes then I end up buying more of the same model for rare bits, then piles of bits for one thing.. then before I know it I can't even find the original bike anymore!
I think the thing that baffles most people is that all my equipment isn't designated to make me money, it may in the future, but right now I make my money other ways and it is more of a hobby/prep for future work. As for me, I still don't know what I want to be when I grow up.
impala4speed
Well-known member
I really don't understand this phenomenon. If this thread bothers you so much why don't you just move on? And if you think you're being helpful, well, you're not.