Quote:
Originally Posted by funola
"On Greazzer's suggestion and diagnoses, based on the crud he found in my injectors, I ran a clean paper towel around the intake for the lift pump - clean fuel. Ran a clean paper towel around the output - dirty!"
How did you run a clean paper around the intake and output of the lift pump?
The lift pump is before the secondary fuel filter but after the primary so anything that gets past the primary will be filtered by the secondary.
So you did 3 things and the engine is now running smooth.
1. had the injectors re-balanced
2. rebuilt the lift pump
3. put atf into the cylinders
Which one of these do you think cured the problems you were having? I think the problems you had was nailing, rough idle and smoke?
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In order:
I just pulled the barbed fittings off the lift pump. Easy.
1. I don't think rebalancing the injectors made much difference at all. Greazzer's work was top notch the first time around and he was very graceful to be willing to touch them again at all.
2. Rebuilding the lift pump eliminated an air leak and a lube oil leak into the fuel system. This would have taken care of the nailing, rough idle, and smoke.
3. ATF probably did nothing. I should run a compression test again, but likely nothing.
I realize I didn't follow the usual diagnostic approach, do ONE thing at a time to be able to nail down exactly what the culprit was. I simply did not have time.
I did get a nasty tank of fuel - multiple fuel filters were replaced before it went through. Does anyone have experience retrofitting larger semi-truck or similar commercial duty filters onto these engines?