Quote:
Originally Posted by dolla08
ok here is the problem im having
i have the described vehicle above sometimes my car starts right up. mind you i have a toggle switch to start it. but sometimes it starts right up but most of the time i have to spray starting fluid into my air intake hose. and other times if im lucky i can throw it in first gear and go down a hill and hit 15 mph and pop my clutch and it starts right up. i have a new starter on it and new spark plugs but i should not have to keep doing this what is the problem and how can i correct it/
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The possibilities are almost endless and I have little specific information to go on, but I'll throw out some ideas (assuming the problem is systemic and not cylinder specific).
Leaky fuel pump check valve
Sticky exhaust valve stems (no rotation) due to a lack of high RPM operation (3k+)/high DI fuel use/worn valve seals
Late cam timing
Low dynamic compression
Intake vacuum leaks
Leaking EGR valve (if used)
IAC motor malfunction/throttle blade not closing to min TPS consistently (carbon build up, worn shaft or binding), two foot driving
Erroneous TPS, ECT, IAT (if used)
Knock Sensor (if used)
Excessive plug gap, carbon tracking, oil contamination, high resistance though secondary wires, arcing to ground or cross firing
Ignition coil or coil primary B+ ckt has high resistance
Corroded/worn ignition switch contacts
Leaking head gasket, fuel injector or oil seal
Incorrect/contaminated fuel (winter gas, E-85, diesel, excess alcohol)