Question about 1995 Chevrolet C/K 2500
Replaced fuel tank, gas lines, fuel pump, fuel filters. New transmission. Replaced engine sensors egr, coolant, map, tps, evap canister, check return air line. New manifold gasket. It's been in the shop numerous times and still not fix. Thinking it's something to do with TBI regulator or something.
The only thing you are doing by leaving the gas cap off is providing an extra vent to the tank.
If that really helps the problem I would take another look at the vapor canister system. There may be a line plugged or a valve not opening.
Normally that would set a code in the computer.
Posted on Jan 07, 2013
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Posted on Jan 02, 2017
do you get check engine codes?..have you done a leak down test and compression test to determine mechanical engine health?
Posted on Oct 07, 2008
Spray the intake with carb cleaner to find the vacuum leak. Check where the EGR mounts and the throttle body gasket sense you had both off.
Posted on May 10, 2009
That eliminates the crankshaft and camshaft position sensors. Have you checked the fuel injector itself for an open winding or stuck valve plunger? There should not be a steady 12 volts to the injector--if good injector, it would be spraying fuel steadily into the throttle body. But at least the engine should try to run if poorly. Take the injector out, dry it off with air, and intermittently apply 12 volts to one terminal while grounding the other. You should hear a click from inside every time you touch 12 volts. If not, replace it. If it does, it may be plugged with debris. Try blowing through it in reverse with compressed air.
Posted on Jul 17, 2009
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