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cold start problem

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Old 02-14-2008, 12:14 AM
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tod84944
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Default cold start problem

Finally got the daughter a 44. Found a nice 85.5 automatic. Having one problem, that I can not find the problem. One early morning cold starts, it is flooding out. It tries to fire, but is flooded. I start it using the full throttle open method, and it will eventully start. I don't touch the throttle, till I know for sure that it is flooded. After it starts, and all the excess fuel clears out, runs great. What ya think.......
Old 02-15-2008, 05:20 PM
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austin944
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Just a wild guess, but since it starts better with the throttle wide open, the air/fuel mixture could be too rich. Since you say it makes a difference whether the engine is cold or warm, I would look at the engine temperature sensor. The DME reads the engine temperature sensor to determine how much to enrich the fuel/air mixture. Might also check the fuel pressure and the TPS.

http://www.clarks-garage.com/shop-ma...htm#cold-start
Old 02-15-2008, 06:20 PM
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jtsporsche
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theres no better way to prove your love to a kid
Old 02-15-2008, 07:05 PM
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make sure you don't have leaking injector
Old 02-15-2008, 07:18 PM
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Shabba
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Originally Posted by theiceman
make sure you don't have leaking injector
What I was going to say...maybe check your fuel pressure regulator? My 280ZX has the same issue and I have traced it to a leaky injector.

Does it do the same thing after you have parked the car and it has cooled off but is still warm?



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