A9 Camshaft rattling, please help

[Robbro19]

I have a Puma Falcon 150cc 157QMJ scooter. I bought and added a A9 Camshaft and installed it correctly and did the valves at .004 but upon start up, now it rattles a bunch. I don't know why, please help. Even added a video.

[Madathlon]

Dude sounds like your timing chain tensioner isn't engaging. or one of the timing chain guide is out of alignment.

[Robbro19]

Well I know the tensioner works cause i have to use a screwdriver to bring thing up and when I release it, it springs down and sits on the top of the top chain guide. The top chain is not movable and I know the bottom chain guide is seated correctly cause it sits in the 2 little notches on the big bore part. Its so frustration cause it seems like everything is right...

[blueboy5000]

Did you replace the timing chain tensioner with an A9 specific one? A9 cams use their own sized chain and tensioner.

Also, you should use a new chain and tensioner each time you replace a cam, not just on scooters, but on everything that has a timing chain.

[Robbro19]

I did not replace the tensioner or chain, was not aware of it. Thanks for the reply! I'll look for a specific chain and tensioner for the A9