Official Timing Chain Tensioner failure thread


Go Kart Newbie
I figured that, looks like the spring/metal peice that goes into grooves prevented catastrophic engine damage. I measured my timing marks on the camshafts and it’s within spec. I can only assume the aftermarket vaico tensioner failed somehow.

Ahh, so the "new" tensioner was not an OEM part...Good to know.

Dans GTI

Ready to race!
Yeah, i didn't even realize it when i bought a few years back from WorldPac.

Dans GTI

Ready to race!
Changed out the timing chain, guides, and tensioner. The car runs very well. This is the most complex and difficult DIY job I've done to date. I highly recommend that anyone who does this job purchase the camshaft locking tools (they are $20 on amazon) without the cam lock tools the job would've been very difficult as the camshaft wants to jump when you put tension on the chain causing the chain to jump a tooth. Also i highly recommend purchasing a strong sealant for the timing cover. I originally purchase peramtex ultra black but didn't want to risk an oil leak so i ended up purchasing a grey sealant from my local Mercedes dealership.