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Pete Groudas
Dodge Dakota
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12/30/2003
15:34:09
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 Subject: Long Crank on 4.7liter
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RE: fuel pressure
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Message:
Hi,
I am having a problem with my 2000 4.7l Dakota. I have long cranks hot or cold, if I crank the engine for a second or two and stop and then try again it starts right up. I checked the manifold pressure and it reads 0psi with key on, engine off, and 49psi running, but then drops to 0 immediately when the engine is shut off. I am thinking check valve on the filter/Regulator, but I expected some pressure with key on though. Any ideas, thanks?
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Dave Mitchell
Dodge Dakota
JOIN HERE
1/02/2004
20:06:59
|  RE: Long Crank on 4.7liter
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It could also be a bad fuel injector not closing on shutdown. I think this is the case with mine that has same problem, as it intermittently acts as though it is experiencing hydro-lock during the cranking. Have to get mine in ASAP, as only have 1,000 miles left on my warranty. The race is on.
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Kowalski
Dodge Dakota
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1/03/2004
09:55:57
| RE: Long Crank on 4.7liter
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Sounds like he's got his problem figured out, Dave. I don't think a bad injector would drop the pressure immediately; would take a while to bleed down. Good luck with your problem.
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Pete Groudas
Dodge Dakota
JOIN HERE
1/03/2004
15:18:45
|  RE: Long Crank on 4.7liter
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Thanks for the info. I was in a little error in saying that it started at 0psi, I moved my meter to be able to see it from the cab and it actually jumps to spec when I turn the key on and bleeds off in 2 seconds (ie faster than I could get from the cab to the front of the truck). I am going to make an adaptor hose to connect to the feed from the tank using an old fuel filter that has the same connection type (Ford Windstar) going to a Strader valve. Just want to verify for piece of mind, and do not want to buy another $250 meter kit just to get a losey $1 hose. Does anybody know if a loose pump or bad gas cap could cause this? I noticed the cap on the tank is a pretty crappy design.
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Todd
Dodge Dakota
JOIN HERE
1/05/2004
13:44:20
| RE: Long Crank on 4.7liter
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I had a similar problem. It was the check valve on the fuelpump assembly.
Once I got the dealer to replace it, the problem was fixed.
P.S. the seal for the fuelpump is reused and can tend to fail and cause evaporative leaks.
Todd
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