hey i have a 1977 f250 crew cab with a 351m motor in it and it has a real big problem with vapor locking now in the summer and i was thinking that if i buy the TBI fuel injection conversion kit that that would stop it. do u think that this will help? or will i just be wasting my money? oh, and the kit i am thinking about buying is from affordable fuel injection. thanx for your time.
Vapor lock
Started by
cjcero
, Jul 26 2009 07:25 PM
3 replies to this topic
#3
Posted 04 August 2009 - 07:56 AM
hey i have a 1977 f250 crew cab with a 351m motor in it and it has a real big problem with vapor locking now in the summer and i was thinking that if i buy the TBI fuel injection conversion kit that that would stop it. do u think that this will help? or will i just be wasting my money? oh, and the kit i am thinking about buying is from affordable fuel injection. thanx for your time.
Hi there Vapor Lock....Ha ha, You would be wasting Money let alone time!!! try a new fuel pump!!! and you could also try putting a 1/4 inch spacer at the Bottom of that carb. I had the same problem with my Big Block Chevy
. After I installed the spacer I have NEVER had a problem//// Happy Boncing" John
#4
Posted 06 August 2009 - 10:31 AM
I had this same problem with my 460. After driving for only around 10 minutes it would act like it was running out of gas. I shielded all the fuel hoses with heat tape to try to pinpoint where it was getting vapor locked at. I found that it was happening in the fuel pump itself, which was a mechanical pump mounted on the engine. I replaced the pump with an electrical fuel pump which i mounted on the frame next to my gas tank, and a fuel pressure regulator valve in the line for the new pump. It's ran great ever since I swapped out the pumps. I didnt run any return line, just the line to the carb, if you wanted to take the time to run a return it would be wise but my setup works great without it. Hope this helps.
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