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cam shaft noise? 125 dragstar


appealmobile
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Am stuck in Germany with my bike.

Was motoring comfortably at 50mph when I lost power and almost stalled.

I obviously pulled over and it kept running BUT with quite a loud rattle/knock coming in at a faster engine revs. I first thought it was a big end, but later presuumed was a sticking valve.

It's quiet at 20 then it kicks in.

Got the rear head off so far as I believed it to be from there.

Question should both timing marks on each cylinder be at top at the same time or should they be opposite for each cylinder.

I am sure I can work it out in time, but am still wotking on it outside a friends flat.

So far no obvious damage to rear cylinder cam shaft or valves and about to remove the front head to check

I also thought it might be the drive wheel of the timing chain.

Anyone had similar experience?

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