Re: testing the ALCL. poor cold start running
 

What's really interesting is when I modified my old 85 with a new engine and such, first thing to go was the fuel pump.

Guess it's coincidence....

Re: testing the ALCL. poor cold start running
 

I just finished changing the fuel filter and the car now holds 22psi at idle.

Time to pull the fuel pumps.....

Re: testing the ALCL. poor cold start running
 

Karl,

Check to see if you have the plastic clamps on the pumps. If so, I would replace w metal hose clamps and see what happens then before replacing pumps. Altho there's always the "while you're there" rule and the corollary which is "may as well". :dancing

Re: testing the ALCL. poor cold start running
 

Fuel pump assembly has been removed. All looks good. Before I replace the fuel pumps with ones from a suburban 454, is there a test I can do to confirm they are bad?

http://s5.postimg.org/wtgnw0rf7/20140517_095805.jpg


http://s5.postimg.org/d04k3be1f/20140517_095814.jpg

http://s5.postimg.org/dqxa93ger/20140517_095823.jpg

Re: testing the ALCL. poor cold start running
 

Karl,

I would replace those black plastic clamps first then put pumps back in the tank. See what ur FP is. Its easy enough to pull the pumps again if u need to replace them.

Re: testing the ALCL. poor cold start running
 

Are you referring to the black clamps around the hoses?

Re: testing the ALCL. poor cold start running
 

Yep, replace them w hose clamps. They get loose and fuel will squirt out lowering the FP.

Re: testing the ALCL. poor cold start running
 

One last question. How tight should the clamps be?

Re: testing the ALCL. poor cold start running
 

The ones I replace them with? Hand tight?

Re: testing the ALCL. poor cold start running
 

Just don't have the rubber squeeze through like dough.