- OFFICIAL GEARHEAD -
Join Date: Feb 2005
Location: Atlanta, GA
My Ride: CSX/CS/GLHS
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Hard to start after engine warm or parked overnight
1985 Shelby Charger, 70,000 miles
stock, no fault codes
After a brief drive, long enough to warm the engine, shut it off to go in the store for about 15-30 minutes and when you return to leave, car turns over fine but will not start easily. I mean it turns over a long time before it starts. Pressing the gas pedal to the floor while it is turning over seems to help and when it fires off, its sputters quite a bit at first, then after a few pats on the pedal it will clear up and run fine.
After engine warms up, while cruising around town or parking lots, there is a bit of a hesitation when you first step on the gas pedal. This makes the car lurch forward, almost feeling like a buck or that you just got on the gas too hard. If you press the pedal more slowly that you should have to, you dont feel it.
It's got all new tune-up parts, 93 octane that is fresh fuel, fresh filters, new OEM O2 sensor, and the factory ECU. Vacuum harness looks good and tests good.
I am suspecting a leaking fuel injector but Im pretty sure when I built this one I installed new OEM injectors...they sure look new w/o me actually removing them to confirm. Fuel pressure was tested initially and it was at or close to 55lbs (give or take a few pounds) at idle w/the regulator hose attached and the car not under boost.
Anybody had one do something like this? Im wondering if the pedal to the floor is any clue....
thanks in advance for suggestions and tips.