Hey everyone, I have been on cumminsforum as LandTug1 for about a year now and have been meaning to come hang out with you fine folks!
I had some issues today with the old girl after installing my new compound setup and wanted to see if I could pick your guys' brain over it. I posted this on the other forum as well put thought I should reach out to more 1st gen owners.
So I just got the truck back on the road after building a compound set up. On the road I mean driveable for short distances ie: no fan, heater hose leaks, turbo feed oil fitting leaks, down pipe exhaust with the rest bungeed to the frame... anyways, I had driven it last weekend once about a mile and up and down my road, got it up to around 70, no issues. Today, I took some friends for a quick ride in a big loop about 3 or 4 miles. Got on it a few times, (up to 90 mph) then let off. EGTs hit 1050 f., fuel pressure was fine. Oil pressure looked good... no issues. Backed it into the driveway and got out and let it idle for a few minutes to cool the egt's down before shutting it off. After a few minutes checked the egt's and they were exactly where they were when we pulled in (650 f.) then I heard a noise that sounded like the starter tried to engage for a second. Then, it made the same noise again. I shut it down at this time, and a bunch of white smoke that smelled like electrical stuff billowed out from under the truck (under the cab area) so we pushed it by hand into the garage to get a better look (bending my door in the process on the gate... Got it in, looked under neath, nothing out of the ordinary. Pulled the cold pipe and intake pipe off and checked the turbos. Both spun freely, and no shaft play. puzzled, started it up again. No noise but white smoke and shut it down in a few seconds. We couldn't pinpoint where it was coming from so I started it again. No noise, no smoke. Thought it could have been oil on the clutch surfaces some how. While off, engaged the clutch and rowed through the gears like normal, no issues. Started it and engaged the clutch in idle a few times, no issues. Then rolled it forward and backwards with the clutch a few times, no issues.
Now like I said it is leaking coolant in a few places, and oil from the fittings.
This is what I could think of:
1. blown head gasket; not sure how it would make the noise, temperature stayed normal, not sure if this would effect egts... also never got the boost above 35 40 which is where I was with the previous set up...
2. coolant on the clutch surfaces; not sure how this would effect egts either, could cause white smoke, not sure how it would get there or if slipping clutches make that noise but it would evaporate on a hot engine and leave no evidence...
3. turbos starved of oil; unlikely, if this was the case further damage would have been found when I checked the turbos correct?
I am at a loss at this point, does anyone have any other ideas?
Any input is greatly appreciated!