Re: [Diesel-RVs] What does ULSD have to do with a leak in ISC engine fuel lift pump??

Isn't the "B" engine related to the engine in Dodge P/U? That era engine is noted for loosing High Pressure pump due to low fuel pressure from the lift pump. Is it not?

Pete

-------------- Original message --------------
From: Chuck & Mary Boros <elmerfletcher@yahoo.com>
Al,
The additives in the ULSD is having some adverse effects on the gaskets and "O" rings in some of the older Cummins engines causing the gasket to leak. The make up of the gasket material coming in contact with the LSD and then the ULSD is the problem. I am a member of another yahoo group where a couple of members had a leaking pump gasket. One coach was on the late 90's, and another is in the early 2000's. One was a "B" engine, and the other was a "C" engine if I remember correctly. They ended up having to change out the entire pump because of damage to the pump before the leak was detected. Cummins said that the problem should show up in the earlier 90's engines. Since not enough of time has expired with the use and effect of ULSD on the Cummins engines, the jury is still out as to how many failures and to which engines are affected. Stay tuned. Chuck B

aw_florida <al2florida@gmail.com> wrote:
What does ULSD have to do with a gasket leaking on a fuel pump?? I
have seen a lot of discussion about the lack of lubricity of ULSD, but
I fail to see what that has to do with a gasket leaking. Maybe I am
missing something here.

This is the thread where I saw a discussion about the leaking fuel
pump: http://autos.groups.yahoo.com/group/Diesel-RVs/message/82540

Message number 82540 discusses a leaking fuel pump. There is a
reference to Cummins Bulletin 06T5-18 in this thread. The main part
of the bulletin is about a new gasket.

Al
2003 Phaeaton with ISC 330 engine.

Chuck & Mary Boros
04 Windsor 02 Ford Ranger
Shelby Dog, Miss Kitty, Mr Lucky Cat

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