Question about 1984 Honda vt 500 ft ascot

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Vt500 engine has a loud knock wen engine is running and gets faster with RPM increase drained oil no metal on mag plug or in oil

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Hi,
You may have solved this by now, but need to know a couple of things.
Does the knocking noise increase with rpm or speed?
If just rpm then it could be bent valve or valve timing
If just speed, could be drive train related Make sure carbs are balanced this can produce massive vibes on v-twins (I know from my Firestorm!)
As mentioned by heimlich it may be that one of your cct's are knackered.

Posted on Dec 03, 2010

  • Anonymous Dec 03, 2010

    Hi, You may have solved this by now, but need to know a couple of things. Does the knocking noise increase with rpm or speed? If just rpm then it could be bent valve or valve timing If just speed, could be drive train related Make sure carbs are balanced this can produce massive vibes on v-twins (I know from my Firestorm!)

  • rwillard59 Dec 04, 2010

    Hi problem is not solved yet the knocking is in the engine and does increase with the rpm
    bike in neutral give some gas the knocking gets faster. Just got the motor out of frame
    now riding season is over and the vt750 is put away, I now have time to work on this bike
    Thanks for your reply, any suggestions are appreciated.
    Randt

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You are probably dealing with a bad automatic cam chain tensioner.

Posted on Oct 24, 2010

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