chevy 454 fuel problems

[paulc]

We have a Trek with a 454 fuel injected engine that quits after being hot under load. It has an in tank fuel pump whitch we think is too weak to overcome a vapor lock. Has anybody cured the problem with an inline pump? If so, what pump did you use?

[C Nash]

Guess you have already changed the fuel filter?

[Poppa]

Several had a similar problem and it was due to a couple things, fel filter and the location of the fuel lines next to a heat source such as manifolds and exhaust pipes.

[Poppa]

OOOOPS.
Most vapor lock
occurs before the pumps on the suction side.

[Kirk]

If you have an in-tank fuel pump you need to replace it. If you add another pump in series with it, when the one in the tank quits completely your new pump won't help.

[C Nash]

You also need to check your voluum and pressure before replacing the pump. This could also be an electrical problem.

[Poppa]

As Chelse stated and I forgot, there is a connection just before the injector assembly for attaching a pressure gauge . A lot of auto supply houses will check it for you . Again sounds like vapor lock but I am just an ole man.