Engine/Transmission (1994 - 1998) Leaking fuel injector pump?

[DrJC]

I am getting a lot of oil on the driver's side bottom of my 96 TD engine and suspension/steering systems. I believe it may be coming from the fuel injection pump. Viewing the idling engine while laying below, it appears that very slow drips of oil (?) are coming from the bottom of the pump, via a cavity in the pump.



Can someone tell me about how serious this is, what the likely prognosis will be, how it can be repaired, and how many $$ are likely for the fix?



I'll sure appreciate your input to guide me in looking at this situation in my 286K miles engine/vehicle. By the way, the fuel injection pump is original, without previous repairs.



Thanks, guys.



DrJC

 

[GAmes]

If you look at the topside, pointing toward the engine is a round rod about an inch long. That is where mine is leaking from, and has been for a long time. I called the local Bosch shop and the tech told me just replacing the outer seal isn't enough, there might be worn internal parts (with over 3/4 million miles, ya think?). Of course that calls for removing the IP. Other than having to clean the engine more often there doesn't seem to be any problems. One of these days I'll buy a timing kit and pull the pump, probably this fall when my garage isn't 110 degrees inside.

 

[DrJC]

GAmes,



I'll take a look for the rod you mention and see if it is involved. I assumed that the pump was lubed by engine oil and that's what's leaking. But, I think you're suggesting that the leak might be diesel fuel. I'll look in this direction. Thank you for the response and information! Good luck with your repair . . . and that Texas heat. In Michigan, we suffer from the humidity. Jim C

 

[GAmes]

No it is leaking engine oil, if it was fuel it would be fixed immediately.

 

[hsmith]

Gary, when you get ready to do this, you are welcome to use my kit.

 

[GAmes]

Thanks Smitty.

 

[GAmes]

I had forgotten this thread until it came up in issue 70. I took my pump to a Bosch shop in Austin, specifically because it was leaking copious amounts of oil, not the little annoying leak that was going on when this thread was posted. The ONLY part that had to be replaced due to wear was the "lever shaft" and the associated seal. A lesson here for the adamant believers that fuel additives are necessary with ULSD. I've pumped well over 35,000 gallons into the tanks since ULSD was introduced, so being conservative 25,000 of it was ULSD. Contrary to the doom and gloom lubricity issues, my pump had no fuel lubricated parts worn out, or even close to being worn out.