hard starting, easy fix

dipperc30 · #1 (**permalink**) 01-07-2008, 04:21 AM

I have a 87 with a 6.9 engine. After sitting for a while,maybe overnight, it was hard to start. I place a check valve in the fuel return line as it comes out of the injector pump and it fixed the problem. The engine was apparently losing its prime

**05strokinfx4** · #2 (**permalink**) 01-14-2008, 03:12 PM

do you have any pics of this my Buddy has an 86 f350 drw 4x4 short chassis cab with a flat bed and it has this problem

dipperc30 · #3 (**permalink**) 01-15-2008, 04:34 PM

Cant come up with any pics but the pump sits right on top of the engine. Its the first thing you see, and the fuel return line come out of the top with an elbow. You probably should look at a schematic of the fuel system in a repair manuel at the library. best of luck jim

legg0 · #4 (**permalink**) 01-17-2008, 04:24 AM

which way is check valve installed? i am assuming it is installed so fuel will travel back to tank and stop it from traveling from tank to engine. is this correct?

dipperc30 · #5 (**permalink**) 02-19-2008, 03:35 PM

sorry for the delay. Yes, the check valve is placed in the direction of the fuel traveling back to the tank. BTW my truck is still starting good jim

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