We're anchored near Manuel Antonio national park in
Costa Rica.
The
boat has an Isuzu C240 that is leaking
diesel from the top of the
Injector pump. Drip rate is ~1 drop every 2-4 seconds. See
photo in link. The shop manual for the C240 doesn't have details for the injection
pump.
https://drive.google.com/file/d/1kvm...A_QweJb46/view
I haven't been able to able to find any info online about this model using the various numbers in the
photo. Although I understand there have been several re-brands and Kiki
Diesel --> Zexel --> Bosch.
Based on a short conversation with my Isuzu
Parts folks in
Canada (Klassen Diesel) it seems there are O-rings that seal the plunger that might be bad.....
My guess is that this video outlines the job I need to do (different engine):
I'm a little nervous because of Nigel Calder's strong belief that amateurs should not be taking apart their injection pumps. I don't have the "correct" O-rings and replacement copper washers. I just have a variety kit Nitrile Butadiene Rubber. My experience is I can almost always match diameter but not always thickness. I'd have to anneal and re-use the washer via
propane torch.
I attempted to simply tighten the offending plunger but access is challenging and although I didn't seem to be getting movement, it did produce a "hissing noise" when I applied pressure to the wrench. I'd need to pull the
fuel pipe and buy a deeper socket to use the torque wrench. If the O-ring is bad I'm not sure if that'd help anyways.
My questions are:
1) Does a leak in this area mean I'm not getting diesel to one of the 4 injectors or is it simply
fuel coming up around the sides from the fuel gallery?
2) Even if I could get things sufficiently spotlessly clean, would I be a fool to attempt this job at
anchor without the official O-ring and new washer and at the risk accidentally dislodging small and highly machined
parts.
3) if the
engine seems to be starting and running, I could do a ~24 hour run to Golfito where we plan to stay for 3 weeks and could get a pro to look at it. I'd turn the
bilge pumps off for environmental reasons.
4) Anything obvious that I'm missing?