Fuel pressure check valve replacement

[Revver]

Tests prove that the fuel pump check valve no longer holds pressure. Instead of dropping the tank or cutting a flap to replace the fuel pump (which still works OK), let just fix the no-pressure-at-startup problem.

This is accomplished by installing an inline check valve (from mcmaster.com) along with a couple of Ace hardware flare adapter fittings between the fuel filter and the hard line. Similar to this:



Cost under $20.
BTW be sure to use teflon tape to prevent fuel leakage.

[cold_surfer]

got that problem PLUS I threw the right/left bank lean codes. changed fuel filter and the codes happened off the bat and then 2 weeks later (last one not cleared but check engine light not on anymore, even if driven hard)...

is the check valve in the pump?

[Revver]

Yes. The stock check valve is in the fuel pump assembly ($180), the fuel pump has a strainer on it ($11).

To remove the fuel pump, the gas tank has to be removed ($100+ if a mechanic does it for you).

Had one mechanic quote $660 to replace the fuel pump.

[Injuneer]

What is the inside diameter, and rated flow capacity of the new check valve?

[Revver]

Check McMaster. I got one w/ 1/4" NPT.
They offer sizes up to 1/2" NPT. That should flow enough for anything street legal.