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second timing chain chsnge in less than 3 months

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I need some help figuring out if these parts are in good condition or need replacing.

The story is my xr250 motor was making clanking noises that I believe came from the cam chain, so i took it to a mechanic who replaced the chain, but didn't reset the tensioner.

The noise went away for a while, but then came back and is even worse now, so I'm thinking the new chain has been destroyed too.

I've ordered a new chain, but would like your opinions if you think I need new sprockets and a tensioner guide as well.

The cam chain guide was hard to remove so I took a picture of it inside the engine.

After I removed the tensioner, I noticed a few bumps at the bottom of the rubber as you can see in the pics. I don't know if that is affecting it. The spring seems to still be pulling tight, so I don't think im going to chain that.

And finally the sprockets seemed fine to me but im no specialist so im posting some pics here for a second opinion.

Thanks in advance

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guys, me and exray need ur help figuring this out: look at that warping on the tensioner, is this destroying the cam chain? is it time for a new tensioner?

 

unnamed1_zpsf04467b0.jpg

Edited by md30

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I would defiantly change the tensioner...A good way to check the chain is to have the engine assembled, and see if there is any slack by trying to lift the chain off of the cam sprocket.  There should be very little slack.

 

ME

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I would change that tensioner too. Almost looks like the chain has been running off center and has caused the wear you see on that one side of the tensioner. I think before changing the tensioner I'd try to figure out how that could have happened in the first place or you risk it happening again.

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piece number 8 was missing when i removed the tensioner. i think my mechanic removed it when he took it apart the first time and forgot to put it back in.

do you think it would work if i use these washers as substitutes?

 

i can get stainless steel ones,but thickness is an issue.

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