6.9 IDI fuel problem
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6.9 IDI fuel problem
i intalled a new fuel water seperator in my 86 F250 6.9L IDI with banks turbo, after i installed it i now have a problem that when i give it full throttle it cuts out then takes a while to start back up like its pumping fuel back up into the motor, i was told i have air in the fuel. any ideas would help thank you
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From: Virginia
Did you put a aftermarket unit on the truck, a new OEM replacement, or a new used replacement? The original type separators are famous for leaking air, and most people bypass this unit and just run a filter, and sometimes use a aftermarket separator with less problems.
In your case for a test, I think I would bypass it temporarily and see if the problem goes away. That would at least point you to the problem possibly.
In your case for a test, I think I would bypass it temporarily and see if the problem goes away. That would at least point you to the problem possibly.
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Joined: Jan 2001
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From: Virginia
Do you have lots of fuel in the tanks? You know these trucks are famous for the pickup in the tank breaking off. It looks like a big plastic shower head, and when it breaks off, you have to keep lots of fuel in the tank or it runs out.
I would also inspect your fuel lines. They may have rusted and have a pinhole, letting air come into the line. Another experiment would be to get a diesel fuel can(if you have one for a tractor or something), and run a rubber line into it and hook it up to the fuel pump and see if the problem goes away.
I would also inspect your fuel lines. They may have rusted and have a pinhole, letting air come into the line. Another experiment would be to get a diesel fuel can(if you have one for a tractor or something), and run a rubber line into it and hook it up to the fuel pump and see if the problem goes away.
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i stoped woring on it but im going to fill the tanks tomorrow morning but the one im on should be pretty full... in the morning the truck usually takes a little longer to crank up cus normally it take just a second making me think fuel is backing out the line, i have fixed a leak befor and put the truck up on the hoist at work and got a good look at the fuel lines there in good shap no rusting
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filled up both tanks and it seems to be better but it is still getting air iinto the the filter i out on, my next idea was to move the filter below the fuel pump to see if the air is coming befor it or after
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