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Old Sep 13, 2016 | 01:04 PM
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Old Sep 13, 2016 | 01:20 PM
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Does it do the same thing if you turn the key on and let it build pressure for a few seconds before you start it?

How old are the plugs and wires?
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Old Sep 13, 2016 | 01:26 PM
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Old Sep 13, 2016 | 01:40 PM
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Have you cleaned the inside of your throttle body? behind the butterfly valve, dirt builds up on back side.
Maybe run a fuel cleaner through the tank.
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Old Sep 13, 2016 | 01:51 PM
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Old Sep 13, 2016 | 02:36 PM
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Originally Posted by rmiller
Ive just got through running a tank with seafoam in it. I had this same thing happen in another car a few years back and it had a pin hole in the fuel line that let the fuel drain back. I'm positive the fuel is draining back just not sure why.
The throttle body doesn't see fuel so won't see seafoam. Also, be careful using seafoam with fuel that contains ethanol as seafoam is a 'hydrocarbon blend' with isopropanol (alcohol)
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Old Sep 13, 2016 | 02:55 PM
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I try to stay away from ethanol, sorry when you said throttle body my mind was on injectors. My wife and I are out right now store hopping in the jeep no problems at all. Starts fine every time. It's worse over night.
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Old Sep 13, 2016 | 03:35 PM
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Originally Posted by rmiller
But before you ask fuel pressure is 22 and 26 when you pull a vacuum line loose.
How and where did you measure the fuel pressure?
Fuel pressure is supposed to be 58 ±2 psi.
Not sure why you would pull a vacuum line, or why the fuel pressure would change after doing so.


Originally Posted by rmiller
I had this same thing happen in another car a few years back and it had a pin hole in the fuel line that let the fuel drain back. I'm positive the fuel is draining back just not sure why.
If you had a pin hole in the fuel line, fuel would be spraying out.


The fuel pump gets power while the engine is cranking, and all the time the engine is running.
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Old Sep 13, 2016 | 05:12 PM
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