Drip drip of diesel from bell housing, IP?

[Triple C]

SandBar, have you checked to make sure the leak isn't a hose? I have a 6.5 that was dripping - it turned out to be a bad fuel line. I would make sure it's the IP before I bought one. I didn't see where this had been discussed but if I missed it - sorry.

 

[SandBar]

SandBar, have you checked to make sure the leak isn't a hose? I have a 6.5 that was dripping - it turned out to be a bad fuel line. I would make sure it's the IP before I bought one. I didn't see where this had been discussed but if I missed it - sorry.

Good point, will check. I have been all consumed by rust remediation prep.

 

[scottladdy]

I am new to diesels and the following may be ignorant: No, I have not tested the compression. I was happy that the truck starts immediately every time (new batteries and fluids plus diesel kleen), does not smoke, does not sputter, idles down after a few moments, accelerates, has no odd sounds and is fine with a hot restart. That said, should I bother with all of those indicators?

OK, Apologies for going off topic. But since the OP asked ...

All of these are great signs. A compression test is a diagnostic tool that, when performed correctly, does not lie.

Think of it like checking someones temp with your hand vs with a thermometer. Your hand is a pretty good subjective indicator of health. The thermometer is conclusive of the persons temperature.

Since this is a new to you vehicle, you will also be establishing a baseline. Performing these diagnostics periodically is not a bad way to determine if something is going awry in enough time to fix it before things get really bad.

 

[SandBar]

Thank you. I understand compression tests on gas motors, and leak down tests Do I need an extra beefy compression gauge?

 

[scottladdy]

Thank you. I understand compression tests on gas motors, and leak down tests Do I need an extra beefy compression gauge?

Roger that. You need a Diesel compression tester with the proper adapter to fit the glow plug port of the 6.2/6.5. Harbor Freight sells one, just FYI.

 

[SandBar]

Sounds like a good investment, plus a reason to go to HF.

 

[Hasdrubal]

I also had a bad fuel line that dripped out the bell housing hole. Intake valley was dry around IP. Rubber fuel line from lift pump to filter was wet on passenger side valve cover where it attaches to hard line. Small cracks had developed there.