not starting Hello I have a 1990 Honda Accord sorry not civic with a 4cyl motor I have checked the fuel pump and it works I have checked each spark plug each one sparks nice I have checked the fuel rail where the fuel comes in and the other end where you connect the fuel pressure gauge and its got fuel I have checked the fuel injectors and have the proper resistence now my question is after cranking the engine over a lot and not starting I pulled the plugs out and they are dry not even smelling like gas what is the problem |
Re: not starting what is the problem Verify "lack of fuel" by briefly spraying flammable aerosol carb and choke cleaner into the throttle body while someone is cranking the engine. If it fires on carb spray, that confirms a fueling problem of some sort, confirms spark is ok and compression is at least good enough to run. How did you check the fuel pump? How much fuel pressure does it have at the injector rail? Do the injectors receive 12v power from the main relay, and a ground pulse from the computer during cranking? Can the injectors click and pass fuel through? (not stuck closed) When you turn the key on, does the check engine light illuminate for several seconds? Got any fault codes in the computer? |
Re: not starting Hello Ok that's a lot of questions lol Spark is good Compression is 100 on all 4cyls The only way I myself can check the pump is turn the key on and after losning the fuel hose on the fuel rail it is just pumping fuel out and on the other end fuel comes out as well There is 12v coming to the injectors when key is turned on And a ground Don't know about the injectors passing fuel through ? I don't think they are because the plugs are dry The check engine light does come on but just the normal time limit And I do t have a code reader so I really don't know what else to do I am going to try and spray some flammable stuff in the intake tomorrow |
Re: not starting There is 12v coming to the injectors when key is turned on And a ground The ECM triggers the injectors on and off by pulsing ground. A small test light (NOID light) should flash while you are cranking the engine-- if the 12v is present and the ECM is pulsing the ground to operate the injector. |
Re: not starting Oh yeah, 100 psi would be very low compression to me, but some testers aren't real accurate and different people do the test differently. Using my own compression tester and using my methods I usually expect 180 PSI or higher. |
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