Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
It could been saved in the memory. I have had the vehicle 3 years and this is the first time i have used my code reader. The check engine light has never come on before during my time with the vehicle.
Will not start. Has fuel in the tank, fuel pump works, has spark at the plugs but will not start.
What could be the solution?
Would a lack of gas from the pump cause the engine not to run at all? Should a fuel pressure test be done?
Unsure yet. we need to be sure the fule is getting from the pump to injetctors and that injectors are allowing fuel in the engine. To di this, a fuel pressure test is needed but you can try a couple things. The easiest is to gently spray some carb cleaner in the throttle body then try to start. If it starts, we have to go to fuel problem. ) injector drive, pump etc) If not, lmk./ The other thing to do but be very careful is to lay a towel around the fuel pump test port and while cranking, push the pintle in like letting air out of tire. Fuel may spray out so keep face clear and rag around the area. the lcoation of the test port is on drivers side of engine just bhind the intake and sticking up out of the fuel line. It may still have a black plastic cap on it. see below. #20 and #19 LMk thanks
I am going to pull off the intake manifold tuning valve assembly to see if there is leakage inside. I removed all plugs and had no gas leakage. Sould the fuel meter assemby be replaced? Check the fuel pump for proper power? Should the pressure from the pump be constant?
The fuel pump is working fine then. Could thick, very old and cold oil cause an engine not to start? I am taking off the intake manifold.
When the intake manifold comes off what should I inspect? fuel regulator, cpi unti, leaking lines, stuck ploppets?
You would need a special tool to block off the return line to confirm bad regulator, As far as poppets, you can do same thing but will have to have the poppets up and out of their seating . If there is raw fule laying on lower intake after upper is off, this is sign of bad unit as well
So i just hook up 12v power to the pump should start? does the connection need a ground?