I had to replace the intake manafold gaskets on my 97' Chevy Silverado 5.7 liter V8. I was having overheating problems and checked the pressure in my cooling system and found the problem. Anyway, That being fixed, I got it back together and running but it was running a little rough and the check engine light came back on. I went and had the code read and it said the 2 cylinder was fowled. I replaced the rotor cap & the plugs. The Plug wires are new so I switched the wire with another wire to see if the other cylinder would do the same thing. It didnt. The new 7 plug was wet with gas. The truck starts up on a pinch and runs but is running rough. And has a little shake on exceleration. Not bad enough to drive but it is eating the gas.
Could it be a sticking valve? I have 178,000 on the truck. If the valve is not seating what should I do?
If its not what I am thinking do you guys have any suggestions?
If you have the Vortec engine it sounds like you have a injector problem. As you know they are plastic hoses that run from the injector module to each cyl inside the intake manifold. The clue is you had the intake off.
April, 21, 2006 AT 4:17 PM
I did take the manifold off and cleaned the hoses and everything. I tried to be pretty careful with it. How can I check to see if that is it?
Take off the manifold & then.
April, 21, 2006 AT 5:47 PM
You need to take off the intake again and replace that injector. A tine dent in the line or the injector can cause a flood condition. Unfortunatly, the hose comes as part of an assembly. There is a possability that the fuel pressure regulator is bad and forcing excess fuel into that injector. It also is part of the $600 assy. Good luck
April, 22, 2006 AT 7:50 AM
$600? What a deal! Just kidding. I will take a look and see if I kan find the kink in the hose. Thanks for the advice
April, 22, 2006 AT 8:34 AM
Sadly it is not one of GM's better ideas. It costs over 1.5K at a dealership and so far there is no recall. It happens in a number of years at around 85K+