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by **cumminspuller98** » Mon Jan 04, 2010 10:51 pm

the 89 is hard to start, like fuel is bleeding off when it sits over night. i cant get any pressure on the lift pump levar. is it possible for a bad lift pump to let the fuel leak off?

by **dpuckett** » Tue Jan 05, 2010 2:47 pm

Possible. Not entirely sure where to begin looking if that doesnt solve it.

IF you can, hook up a pressure gauge after the filter and see what you get. Should be 5-7psi at idle, >3 at WOT.

Daniel

by **ahale2772** » Tue Jan 05, 2010 6:03 pm

u might have been off cam when u tried the pump too...

by **cumminspuller98** » Tue Jan 05, 2010 6:48 pm

i bumped it over several times and still no pressure on the pump. where is the best place to put the pressure gauge? i work on a lot of 24v's and p pumped 12v's but im not up on the ve engines

by **921stgen** » Wed Jan 06, 2010 3:02 pm

Get one of the tapped bango bolt like in the pic, and put it where the air bleeder is above the filter assembly. http://www.genosgarage.com/prodinfo.asp ... ONG-TAPPED

by **Tintacker** » Wed Jan 06, 2010 8:44 pm

Just a thought, Mine was doing the exact same thing. It turned out to be a bad seal on the quick disconnect at the lift pump, sucking air and letting the fuel drain back overnight.

John

by **cumminspuller98** » Fri Jan 08, 2010 11:27 am

what are you calling quick disconect?

i have saw the rubber line going in to the filt pump dry rot and crack befor....

by **Richie O** » Fri Jan 08, 2010 2:07 pm

cumminspuller98 wrote:what are you calling quick disconect?

i have saw the rubber line going in to the filt pump dry rot and crack befor....

My 93 has plastic fuel lines that have a quick disconnect where it attaches to the pump. Your 89 ( like mine ) will not have that.

by **Tintacker** » Fri Jan 08, 2010 7:59 pm

You see,
Just when I think that I've learned something about these trucks, I open my mouth only to find out I don't know squat. :oops:

Sorry for the bad info, I'm moving my chair to the back of the class.

My 93 has plastic fuel lines that have a quick disconnect where it attaches to the pump. Your 89 ( like mine ) will not have that.

by **cumminspuller98** » Sat Jan 09, 2010 11:15 pm

like a quick disconect on a gasser.......i m pretty sure its rubber to the pump and steel to the injection pump.....

by **opofus** » Mon Jan 11, 2010 7:35 pm

This must be an epidemic, I am having the same problem on my 91.5. It started right after changing the O-ring gasket on the fuel filter mount.

by **cumminspuller98** » Mon Jan 11, 2010 10:30 pm

good luck, i aint even started the 89 in almost 2 weeks, i have been driving the second gen. i guess i need to get it in the shop and see what i can figure out

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