Gentlemen, It has been several months since I've been here. But, I do read many of the threads. Here's my reason on posting today.
I have a 1996 Chev. Tahoe with 5.7 litre V-8 Vortec with 127,312 miles. The past several months I've had to add anti freeze to the radiator. Just about pint or so each time. I don't drive the Tahoe much...maybe 15-20 miles a month....I'm retired and have a 2006 Buick Lacrosse wife and I use.
Here's the report on what I think the engine needs to fix the leakage. I change oil and filter and it has been driven about 150 miles since the oil/filter change, and I probably have added three pints or more anti-freeze since the oil/filter change. There's no anti-freeze to be found on the garage floor under the Tahoe. I can see where there is some coolant on the engine block to the left of the thermostat....not enough to make run down the engine on the floor. I've also check the oil and cannot see any suds/soapy type of residue of any kind, nor there's any soapy substance in the oil filler cap. So, my guess would be it is leaking some coolant around the water ports on the intake manifold. Some of you may know General Motors made these 5.7 litre Vortec engine with bad manifold gaskets from 1996-1999. Yes, they used silicone on the block..front and rear between the heads....
So, it come to this. I'm going to tackle the job or replacing the intake gasket, as I'm sort old shade tree mechanic. I don't see any problems, just a lot of wiring and cable that need to be labeled and move aside to perform the chore.
I have plenty tools...Craftsman products from 1956-2012...But, one tool I have is a Craftsman "Beam" torque wrench. I'm thinking of getting a "digital or chick type torque wrench to use here. But, there's a problem here with these wrenches. The torque spec's on the '96 Tahoe intake manifold are....3 stages....50 inch lbs, 100 inch lbs, and 132 inch lbs. (11 ft. lbs) on the last torquing.
Does mosts of these new digital and clicker wrenches can be set for 50 inch lbs. and up to 132 inch lbs.?
I have a 1996 Chev. Tahoe with 5.7 litre V-8 Vortec with 127,312 miles. The past several months I've had to add anti freeze to the radiator. Just about pint or so each time. I don't drive the Tahoe much...maybe 15-20 miles a month....I'm retired and have a 2006 Buick Lacrosse wife and I use.
Here's the report on what I think the engine needs to fix the leakage. I change oil and filter and it has been driven about 150 miles since the oil/filter change, and I probably have added three pints or more anti-freeze since the oil/filter change. There's no anti-freeze to be found on the garage floor under the Tahoe. I can see where there is some coolant on the engine block to the left of the thermostat....not enough to make run down the engine on the floor. I've also check the oil and cannot see any suds/soapy type of residue of any kind, nor there's any soapy substance in the oil filler cap. So, my guess would be it is leaking some coolant around the water ports on the intake manifold. Some of you may know General Motors made these 5.7 litre Vortec engine with bad manifold gaskets from 1996-1999. Yes, they used silicone on the block..front and rear between the heads....
So, it come to this. I'm going to tackle the job or replacing the intake gasket, as I'm sort old shade tree mechanic. I don't see any problems, just a lot of wiring and cable that need to be labeled and move aside to perform the chore.
I have plenty tools...Craftsman products from 1956-2012...But, one tool I have is a Craftsman "Beam" torque wrench. I'm thinking of getting a "digital or chick type torque wrench to use here. But, there's a problem here with these wrenches. The torque spec's on the '96 Tahoe intake manifold are....3 stages....50 inch lbs, 100 inch lbs, and 132 inch lbs. (11 ft. lbs) on the last torquing.
Does mosts of these new digital and clicker wrenches can be set for 50 inch lbs. and up to 132 inch lbs.?
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They always seemed to blow out around the distributor hole making it hard to somewhat diagnose
