Hot Start Problem
05-25-2015, 03:20 PM
#1
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Location: St. Louis
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Car: 1989 Iroc Z/28
Engine: 5.7
Transmission: 700R4
Axle/Gears: 2.77
Hot Start Problem
Hey guys, I am having this strange problem with my car lately. It just won't restart when hot. Then, when i unplug an injector, it starts. The car has spark, fuel pressure at the rails and great injector pulse until it is hot. I put a new ICM and pickup coil on there. It recieved new ECM about two years ago. I also then completely rebuilt the top end. Still happening. It is factory stock besides an aftermarket coil pack. Any insight would be great. I miss driving my car.
Thanks, Brandon
Thanks, Brandon
05-26-2015, 10:40 AM
#3
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Car: 88GTA
Engine: 5.7TPI
Transmission: Auto
Axle/Gears: 3.27
Re: Hot Start Problem
Hot soak...Injectors leak down after you drive the car and try to start it back up again. Floods the cylinders.
For a test, hold accelerator to the floor after a heat soak and crank it. Chances are, it'll start.
Time for new injectors maybe.
For a test, hold accelerator to the floor after a heat soak and crank it. Chances are, it'll start.
Time for new injectors maybe.
05-26-2015, 12:39 PM
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Car: 1989 Iroc Z/28
Engine: 5.7
Transmission: 700R4
Axle/Gears: 2.77
Re: Hot Start Problem
Thanks for the replies. The car did the same thing this morning cold. I already have tried flooring it while cranking and nothing happens. It'll start on starter fluid or with one injector disconnected.
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