Just like the title says. A customer of mine has a D6R with the C9 and the engine makes an un-godly fluttering sound under load. Doesn't seem to matter if its got a big load of dirt or just tracking across the field. It sounds a bit valvey so we pulled the head, had it checked out, found one burnt valve and thought "good, we found it". Wrong, still does the exact same thing. I've ran the overhead 3 or 4 times and its never changed or been off. Local dealer has been out half a dozen times running cut out tests, replacing sensors, updating flash files, trying anything they know. About the only thing they've changed is made the smoke go completely away (used to give out a puff of smoke slightly at initial acceleration).
Anybody else ran in to this or any Cat mechanics have any ideas? My gut tells me its the Heui pump or an injector but I can't sell 6 injectors and a pump on a gut feeling.
Anybody else ran in to this or any Cat mechanics have any ideas? My gut tells me its the Heui pump or an injector but I can't sell 6 injectors and a pump on a gut feeling.