1995Tahoe
TYF Newbie
Recently bought 1995 Tahoe LT 5.7 4dr ($1500). The previous owner had heads put on. Rebuilt heads, apparently. I have no idea what was new and what old used parts went back into the heads, and the whole thing makes me nervous. I called the shop that did the job and they didn't sound like professionals AT ALL. I don't want the engine to be damaged because some idiots didn't know how to put in new valvetrain components. There was so much wrong with this truck I'll make a list of all the things I've fixed so far.
Brake Booster w/Master Cylinder (I knew this was wrong when I bought it)
Running Valve Adjustment (both sides)
New Temp Sensor and Connector (the one by the stat)
New IAC Valve (the old one was stuck open/compressed and the injectors were dumping fuel causing backfiring and misses)
Rerouted the wiring harness out from underneath the heater hose (?) that plugs into the back of the intake, near the distributor
When I did the valve adjustment, all lifters were at least a whole turn too tight. I loosened them until the clack, then did a 1/4 turn. Once I was done with one side, I re-did it just to be sure, and it was confirmed completed, no further adjustment needed. But now there is another ticking that doesn't seem to be coming from the valvetrain, but rather seems like either in the front or underneath. I heard it better when I got next to the harmonic balancer. After doing the valve adjustment, the Service Engine Soon light came on.
If you guys have ideas or advice, that'd be great. I need to know what that knocking might be and I was trying to find out what you guys think about the whole head situation. If you want me to upload a video, I can easily do that. Thanks.
EDIT: I have not done a compression test. Will do tomorrow. I have not done a fuel pressure test. I just ordered the OBD1 to OBD2 adapter, so I have to wait until that comes in before I can see what the CEL/SES is for, neither AutoZone or O'Reilly's Auto have an OBD1 scanner. I have not changed the oil or done any other normal maintenance and tune up operations.
Brake Booster w/Master Cylinder (I knew this was wrong when I bought it)
Running Valve Adjustment (both sides)
New Temp Sensor and Connector (the one by the stat)
New IAC Valve (the old one was stuck open/compressed and the injectors were dumping fuel causing backfiring and misses)
Rerouted the wiring harness out from underneath the heater hose (?) that plugs into the back of the intake, near the distributor
When I did the valve adjustment, all lifters were at least a whole turn too tight. I loosened them until the clack, then did a 1/4 turn. Once I was done with one side, I re-did it just to be sure, and it was confirmed completed, no further adjustment needed. But now there is another ticking that doesn't seem to be coming from the valvetrain, but rather seems like either in the front or underneath. I heard it better when I got next to the harmonic balancer. After doing the valve adjustment, the Service Engine Soon light came on.
If you guys have ideas or advice, that'd be great. I need to know what that knocking might be and I was trying to find out what you guys think about the whole head situation. If you want me to upload a video, I can easily do that. Thanks.
EDIT: I have not done a compression test. Will do tomorrow. I have not done a fuel pressure test. I just ordered the OBD1 to OBD2 adapter, so I have to wait until that comes in before I can see what the CEL/SES is for, neither AutoZone or O'Reilly's Auto have an OBD1 scanner. I have not changed the oil or done any other normal maintenance and tune up operations.
