Hard to start condition - IMBOC
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post #1 of 10 (permalink) Old 09-25-2019, 01:47 PM Thread Starter
 
Join Date: Oct 2018
Location: Batavia, IL
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Hard to start condition

I have an intermittent hard to start condition on my 01 Bullitt that I have not been able to solve. When the engine is cold it will always fire right up. Also, if I have been on a long run to really heat things up, it will restart no problem. The issue is that sometimes when I go on short 5 to 10 min ride and then shut it off, it does not want to fire back up. The first time I turn the key, it will crank but have no sign of life. Then the second time I turn the key, it will reluctantly fire up. My mechanic looked at it (of course it would not do this for him) and checked some regular items he suspected but found nothing. Has anyone else experienced this condition or know what it could be? Any advice would be appreciated. Thanks!


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post #2 of 10 (permalink) Old 09-25-2019, 03:13 PM
Charles


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Mine have done this since day 1 off and on. Turn the key on and let it sit for a few seconds and then try starting.


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post #3 of 10 (permalink) Old 09-25-2019, 03:32 PM
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Have the same issue since I got the car over 6 years ago. Helps to turn the key and push the gas pedal when you turn it over. Assuming a fuel issue of some kind, seems like it helps to give it a little rev and cut the key when turning it off to keep fuel in the lines.

It really doesn't like being spun off the track at 80+ mph I can tell you that. Had to try and start it a few times, same symptoms.

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post #4 of 10 (permalink) Old 09-25-2019, 04:44 PM
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Question

Could be a number of things: Fuel injector(s) leaking down. Fuel pressure regulator not maintaining pressure. Weak fuel pump, plugged fuel filter.
The diagnosis is to connect a fuel pressure gauge on the fuel rail and see what the fuel pressure is: A: Cranking B: Engine running C: With engine shut off.
If the pressure bleeds down after shut off, then injectors or pressure regulator could be suspect. If you are not getting good pressure when cranking or running could be a plugged fuel filter or fuel pump issue.
Fuel pressure should be around 30 PSI at idle and ~40 PSI under open throttle and low vacumn. Should hold pressure when shut off.
Fuel filter is a good place to start. Old gas can cause starting issues as well. Also heat soaking can cause vapour lock.
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Last edited by bullit4404; 09-25-2019 at 04:52 PM.
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post #5 of 10 (permalink) Old 09-26-2019, 01:42 PM

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Normal, Mine has done it every once in a while, since I bought it brand new. No worries!


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post #6 of 10 (permalink) Old 09-26-2019, 01:55 PM

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Mine has always done this too. What Charles said, turn the key on, wait a few seconds, then I press the throttle partway down, then crank it up. Most important, turn on the key and wait a few seconds or so (I usually wait about five seconds).

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post #7 of 10 (permalink) Old 09-27-2019, 10:50 AM

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Interesting..... I have a 2004 F150 with the 4.6 2v engine and it started doing the same thing this summer. Never did it before.

I plan to changes plugs, coils, etc this fall/winter. Just find it interesting so many people reporting this same thing with the 2v 4.6.
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post #8 of 10 (permalink) Old 09-27-2019, 11:07 AM
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Dodge had this problem with the V6 Minivans. People cope with it, but it's not normal, IMHO. The fuel pressure bleeds down for some reason, and you have extended cranking required to start. The wait before cranking allows the fuel pump to re-pressurize the fuel system. The long term result is fuel pump failure, which lots of 01"s have experienced.
In the Dodges, lots of them had injector seepage, and you could smell the fuel in the oil.
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post #9 of 10 (permalink) Old 10-02-2019, 07:38 PM

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Mine does this as well off and on and it's annoying! Mine is when warm only and unpredictable. I usually turn key on let pressure build then crank if it doesn't kick right away I push gas pedal slightly and it will start but slow on the idle up. I think it has to do with throttle position and maybe computer related because it's completely random. It's interesting to see so many others have the same issue. We also have an 01 Gt and a 2000 GT and they never have this issue.
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post #10 of 10 (permalink) Old 10-09-2019, 06:36 PM

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Got my 01' Bullitt in early June 2019 72K miles. It does the same thing. I just give it a little Gas.
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