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Loud Popping, Bent rocker arm/pushrod
So here's my saga:
I drove from Indiana to Iowa to work on a project with a buddy.
It's an '01 w/ less than 90k miles that I bought about two months ago. Cruising through town on my way to get parts for a new project, about 40mph through this little town and all of a sudden it sounded like I got a flat tire.
THUD THUD THUD THUD THUD, but it increased with engine speed. Limped it 100 yards to the nearest turnoff, popped the hood and it was a VERY loud POP POP POP POP POP POP through the breather, driver's bank, with the hood open, shut it off.
Saw a small, but alarming amount of what was probably oil on the flatbed when they were hauling it up. I had just changed my oil two days previous, so it was hard to tell (vs diesel). Didn't know if the valve cover had pressurized or it was an injector spewing diesel?
Had it hauled to a diesel/performance shop about 80 miles away. They called and said it had a bent/broken pushrod and a bent rocker arm, which is what I expected.
HOWEVER, when they replaced the parts and fired it back up, it immediately re-bent/broke the same parts.
The truck is chipped, but was set on the lowest non-stock/econo setting, 1400-1600 rpms, not on it at all.
They're still working on it, but I'd like to see if you guys have a guess? Bent valve? Goobered cam lobe?
It seemed to run fine, which made me think it'd eliminate it being a HPOP issue. I thought maybe it spit a turbo line and fried the turbo, but what do I know.
Why the heck would I have a bent valve/piston contact on such an easy/low RPM's run? Truck was fully warmed up too. You'll have to forgive my ignorance, as this is my first diesel, but I come from a history of performance cars and gas trucks.
Thanks for all the help!
Last edited by Acer2428; 05-06-2009 at 06:01 AM.