I'll bet you guys have an answer for this one...
#1
Registered User
Thread Starter
I'll bet you guys have an answer for this one...
My truck is an instant-start old girl and has never left me on the side of the road. Except, when I let her sit for a month or two as I sometimes have to do. She will then still start instantly but will only run about 45 seconds before dying - I can then crank her a few times and she will start and run another 30 seconds or so before dying again - then after a little more cranking she will start and run fine. It never does this if I'm using the truck on a regular basis - I can even let her sit a week or so with no problem. Could this be a weak fuel shutoff that's sticking when I let it set a month or so? I did change the fuel filter today and it was pretty gunked up so was thinking this might have been part of the problem as well. What do you reckon?
#3
Registered User
While I don't know the answer, 45 seconds until it dies? that's a long time, plenty of time for a "good" lift pump to feed the entire system air or not, but air is about the only thing that will stop a 12v so its getting in somewhere. The shutoff switch would stop it cold just after you left off the key. I will keep this thread in my fav list to see what everyone else thinks.
#5
Administrator
As the others have said, air leak.
Try this, after setting for a long period, use the primer to refill the system, go until you hear a hissing sound like forcing air thru your front teeth.
Then see if she fires right up and stays running.
Try this, after setting for a long period, use the primer to refill the system, go until you hear a hissing sound like forcing air thru your front teeth.
Then see if she fires right up and stays running.
#6
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Join Date: Aug 2005
Location: Airdrie, Alberta
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The other thing to check is to see how much fuel is in the fuel filter once it dies. Sounds like its a big bubble that its getting hit with. Give you an idea how much air there actually is.
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