Cranks a while before starting
#5
My truck would do this after I put Walbro fuel pumps on it. Try turning the key forward for a couple seconds before cranking and see if it corrects it.
But the tune and a log if it cranking would help.
But the tune and a log if it cranking would help.
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#8
I honestly don't know how to get or post a tune file. 
It used to do it only on warm start ups, now it does it constantly.
I've tried turning the key to on position for a few seconds before starting, tried 1/4, 1/2, 3/4, full throttle while starting.
I will test the fpr.

It used to do it only on warm start ups, now it does it constantly.
I've tried turning the key to on position for a few seconds before starting, tried 1/4, 1/2, 3/4, full throttle while starting.
I will test the fpr.
#10
I pulled the vac line on the fpr and turned key on, no fuel comes out.
I hear the pump run for a couple seconds when I turn key on.
I have a In Cab fuel pressure gauge, I turn the key to on position and it slowly drops pressure. Starts at 52 and it dropped down to 42 over 30 seconds.
I hear the pump run for a couple seconds when I turn key on.
I have a In Cab fuel pressure gauge, I turn the key to on position and it slowly drops pressure. Starts at 52 and it dropped down to 42 over 30 seconds.







