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#1 |
Registered User
Join Date: Jan 2006
Location: Smithfield, VA
Posts: 1,501
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Only ever encountered 2 causes for this in my 20+ years
More than likely it's due to a stuck open fuel check valve in the sending unit.
Next cold start (where you would normally encounter the problem) do this. Turn Key On Engine Off for 5 seconds DO NOT CRANK THE ENGINE. Then turn the key off for a few seconds. Then do KOEO again for 5 seconds. Do this process for 6 times After the 6th time, turn it over like you normally would to start and see if this time it fires up quickly without having to crank it. If it does now fire up quickly (after having primed the fuel system) that clearly proves the check valve is stuck. The only way to correct the problem that I've ever seen in 20 + years of owning mine is to replace the fuel sending unit. If that does not change the problem, I guarantee the cap and rotor are the problem. But for now focus on the culprit being the fuel problem. As a "never hurts to try" you might consider using a complete fuel system treatment for several fill ups. I have had the stuck check valve problem 2 times in 20+ years of ownership and still to this day don't know what causes it to stick but I'm pretty sure it's not debris since the sock on the pump is a fine mesh. Good luck to you. |
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#2 |
Registered User
Join Date: Mar 2013
Location: Muskogee, Ok.
Posts: 123
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Re: Cold start / Long crank
Thank you Sir, I will give it a try.
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#3 |
Registered User
Join Date: Jan 2006
Location: Smithfield, VA
Posts: 1,501
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We're waiting
Been a week, how about an update?
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#4 |
Registered User
Join Date: Mar 2013
Location: Muskogee, Ok.
Posts: 123
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Re: Cold start / Long crank
Sorry. Been busy, just rebuild the front end. Trucks starts normally if I cycle the fuel pump a few times. I can't change the sending unit until later, just spent 600 on the front end. I'll just keep 1/2 tank for now in case it goes all the way out.
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#5 |
Registered User
Join Date: Apr 2013
Location: GUNTERSVILLE
Posts: 621
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Re: Cold start / Long crank
very interesting. I drove to the Great White North one winter in my Suburban. Woke up to teens and it did the same exact thing. Never had given me any problem before and never knew why. SO RARE we have that low of temp here and when it does I rarely go anywhere. But good to know.
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#6 |
Registered User
Join Date: Mar 2013
Location: Muskogee, Ok.
Posts: 123
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Re: Cold start / Long crank
Yeah. Not sure what the colder weather would have to do with it other than chilling the valve which may shrink it some resulting it a tighter fit. Or some residue or corrosion broke free and stuck itself in the check valve. Whatever the case, the problem has cleared up recently.
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