Why does my car not want to run
#1
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Why does my car not want to run
My car sounds like it has been misfiring and has a distinct ticking sound, but there has not been a code thrown yet. I have checked that all the wires aren't touching the headers and that they are all seated properly. Whenever I am cruising at low rpms it misses pretty noticeably and idles really roughly. Last time I filled up the car I dumped in fuel injector cleaner, the car ran great with no ticking ran great and idled fine, now half a tank is gone and the problem persists. I replaced 2 coil packs on the driver bank, because thats where the sound seems like it is coming from. The sound is most noticeable underneath the car and not around the engine bay. What should I do, change plugs, something with the injectors?
#4
TECH Regular
You need to get a scanner on it and pull the codes, all the codes it can throw are on a sticky. you check for leaking injectors by measuring the fuel pressure at the rail. There is a schrader valve on the driver side end to the front of the car. Put a fuel pressure reader on it and turn the key to let the pump put pressure to the injectors. Then key completely off and see if your constantly loosing pressure. You should be at 60 psi at key on and stay relatively close when you key it off.
If you pull the codes it will tell you which cylinder is missing so you can isolate your search. I'd pull the plugs and look for cracks in the porcelain. I had a misfire caused by a crack that would happen only under load. I'd look into these before moving to O2's since plugs and a fuel pressure check is WAY cheaper.
If you pull the codes it will tell you which cylinder is missing so you can isolate your search. I'd pull the plugs and look for cracks in the porcelain. I had a misfire caused by a crack that would happen only under load. I'd look into these before moving to O2's since plugs and a fuel pressure check is WAY cheaper.
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