Patrick - Try to isolate which cylinder is making the noise. Disconnect the
sprak lead to each cylinder one at a time and see is the noise stops on the
dead cylinder. Off course you'll have to do this cold when the noise is the
loudest.
If it is located in one cylinder it may be a loose wrist pin, or if the
engine was severly overheated at some time, you make have a scuffed piston
skirt that now has excessive clearance and is "slapping" until it heats up
enough to expand.
I doubt if it's a camshaft journal. The Max has tons of oil up there the cam
chain tension would hold it tight enough to prevent a wooble. Good luck!!!!
Scott
VMOA #500
Patrick Ahearn wrote:
> My V-Max is making what sounds like a weak hydraulic lifter noise when I
> start her up cold. It slowly subsides as it get's warmer until only an
> ear that worries can hear it. Of course my V-Max doesn't have hydraulic
> lifters which raises the question 'what is it?'. On the VMOA list Mike
> Sayers suggested I look to the starter drum screws being loose. This
> could be a possibility. Another response relayed a loose wrist pin
> experience as rattling around 3000 rpm. This is not happening. I was
> thinking the reason it quieted down was as the piston got warmer it took
> up the clearence causing the noise. My personal experience with some car
> motors is the rattle get's worse as the motor heats up and you do hear
> it more around 3000rpm. I'm mechanical but not a mechanic. How about a
> camshaft journal (?)that is worn? My reasoning is that the camshaft is
> rattling until it gets the oil up into the head. Incidently the bike
> runs perfect, it has 46k on the odometer. If it is the camshaft and the
> journals I do have an extra set of low mileage heads with cams from a
> motor that was destroyed when a rod cap came loose on it. Help!!!
>
> --
> Patrick Ahearn
> VMOA #570
> 86 CLYMAX
> Sarasota, Florida
>
> My V-max Home Page
> http://home.earthlink.net/~patahearn
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