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Old 10-25-2014, 08:19 PM   #1
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ISC Lift Pump Seal Kit?

Each time I start my 2000 Monaco Dynasty with ISC 350HP, it leaves a small fuel drip approximately under the starter. Once running, it does not leak. I assume it is the lift pump, although I've not verified that. Is this a common problem, and is there a seal kit available?
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Old 10-25-2014, 09:20 PM   #2
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It is a common problem and the solution is replacement, not a seal kit to my knowledge.

I'm on my third one since new.
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Old 10-25-2014, 11:29 PM   #3
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On my ISC the lift pump is on the rear of the engine on the passenger side. Usually if a lift pump leaks it keeps leaking and needs replaced.

I have had the same leak on my engine and I found it was the one injector line that was dripping. It would drip for a minute or so and then seal itself up. It now has stopped altogether. It just does not make sense. I just had it in for a injector pump problem and asked the mechanic to check that out. He could not find any evidence of it leaking. I am now wondering if it was coming out of some other part of the pump.
They replaced the whole top part of my caps pump with a kit that supplies the new modules. It runs great now and no sign of a leak.
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Old 10-26-2014, 09:59 AM   #4
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very hard to find the seal nowadays. there might still be some out there (heavy truck parts stores) but you'll have to search. about $6 a piece.

this was a identical leak to what i experienced. while unsuccessful to locate a seal, i tightened the retaining bolts (totally 4 of them) about 1/4 turn, accessed from the top of engine, it stopped leaking ever since. prior to my fix, i talked with a diesel mechanic, he quoted me $500 to replace it. He said no other ways around
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