front mount-bolts loose & noisy

Discussion in 'General Questions' started by bigbee, Apr 25, 2007.

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  1. bigbee

    bigbee Guest

    with about 3 hours on a new 48cc engine a pinging noise started at medium to hi rpm, sounded like pre-detonation or a loose wrist pin, not a good sound. after several days and allot of different cures that didn't work it turned out to be the front engine mount was loose.

  2. Dockspa1

    Dockspa1 Guest

    front mount

    I ended up putting a spot weld on the bolt head to the frame.
    I had the oversized frame.
    Good thing you found it before twisting the engine! :grin:
  3. gone_fishin

    gone_fishin Guest

    if i re-mount my engine for whatever reason, i line it up by eye & i do get it right by the book. has a mind of it's own & always settles in a few degrees from where it should be, during those few miles it sure does get to clanking. after i let it set, i re-tighten the mount bolts and it's good to go, no more clank.

    FYI-i check my mount-bolts about every 20-30 miles...1000 miles on the originals.