1999 S3 955i Loud Knock Or Clatter

Poop

 

Are you saying that the bike may produce the loud banging sound in my video clip if one of the plugs isn't firing?

I'm guessing to test this i just put the loose plugs in the loose but wired up coilpacks and ground them to the frame, tap the starter and check for fire on each correct?

 

I appreciate all the responses. Ive never been involved in an online forum with as many people interested in helping to resolve a problem rather than just flaming people and ending inquiry before a resolution is reached. I will most definitely replace the plugs & check the coils as soon as I can isolate the terrifying noise.

 

Will do

 

Thank you for the advice. Unfortunately I am way out of town this weekend. I really wish I was home so that I could make some progress on the bike. I posted essentialy the same video and request for help right after I got the bike home last weekend on triumphrat.net when one of the members suggested I try this site. Maybe it was someone else's post you were thinking of. I don't think i ever said anything anti triumph other than that the nearest dealer wouldn't look at the bike because of its age and told me to check back after summer. Not anti triumph just the reality of the situation. Was it this post? https://www.triumphrat.net/threads/hello-all-please-send-help.973625/#post-2004100313

 

Do you know if there was a resolution to that guys issue. I wouldn't mind reading the thread if you have a link if for nothing more than entertainment.

 

Sorry for the long absence. No real progress to report. Just trying to make time to tinker with the S3. I still need to do the valve clearance checks. I recently had the idea of getting an endoscope to poke around inside to see if I could find an obvious fault. $20 later and here are the results.

 

It would fit up most noses. I was able to run it down a drink straw. https://www.amazon.com/dp/B07PBF6DX5/ref=cm_sw_r_cp_apa_i_0hysFbB9FBZRF

 

After I read the manual a few more times, I will get some feeler gages and check the valve clearances. I'm thinking next I might drop the exhaust manifold and the oil pan to try to get at the other rods to see if that's where the slack is while the engine is still in the frame.

 

It comes with a hook, a magnet and a mirror attachment so that you can fish jewelry out of a drain or tight spot. That might help you sell the idea.

 

I hope its that simple. Closer inspection of the drained oil revealed some brass or copper looking particles. ignore the sludge. It all drained as liquid. The oil was in an open top container and some other debris made it into the container.