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Volvo MD17C bent pushrods HELP!
Larry W4CSC wrote:
Sounds like injection timing is jumping. Valve trains don't appreciate it when injection happens into the hot, compressed air while cams are trying to open valves. The explosion will easily bend valve stems.....and make that backfiring sound as the valve is partially open. Of course, once bent, the valve can't fully close so there's lots of blast-by if it has enough heat and compression left to fire the injection....which it probably does with the pre-heaters setting it off.... Oooohhh my gawd ... Rick |
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