help asap
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help asap
i bought a 1989 f150 4x4 has the 5.0L and the front tank had a leak so i tried the back it also leaked but after about 3 miles it started choking out after 35mph then i slowed down it was fine then it happend again this time it clunked and died it has 97,000 miles so i wouldnt think fuel pump but thats my guess so let me know
thanks
thanks
Fleet Owner
Joined: Oct 2005
Posts: 20,784
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From: Kentucky
So I read your problem to mean the truck will not run on either tank?
If so then it could be a plugged fuel filter or the frame rail mounted high pressure fuel pump may be bad. You need to check the fuel pressure at the test port on the fuel rail (driver side near the front).
If so then it could be a plugged fuel filter or the frame rail mounted high pressure fuel pump may be bad. You need to check the fuel pressure at the test port on the fuel rail (driver side near the front).
Thread Starter
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New User
Joined: Dec 2014
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So I read your problem to mean the truck will not run on either tank?
If so then it could be a plugged fuel filter or the frame rail mounted high pressure fuel pump may be bad. You need to check the fuel pressure at the test port on the fuel rail (driver side near the front).
If so then it could be a plugged fuel filter or the frame rail mounted high pressure fuel pump may be bad. You need to check the fuel pressure at the test port on the fuel rail (driver side near the front).
no it runs fine on the other tank but the back one anything over 35 itll clunk and kinda slowly die front tanks fine
Fleet Owner
Joined: Oct 2005
Posts: 20,784
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From: Kentucky
A basic diagram from Subford:
Post Fiend
Joined: Apr 2002
Posts: 19,311
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From: Waterloo, Iowa
It's possible but usually, problems like that are just taking a break and will return. If the age of the truck and mileage warrant start getting parts together now for the task, maybe knock one tank out at a time.
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thank you, im getting a new tank and oil pan put in in a few weeks
id do it myself but i dont wanna dick around with a 89 im more of a classic truck guy if it were my 78 id do it myself
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