whats that noise?

[cutthroatxxx]

I rcently got a 1985 honda 200s it runs like a champ,but there's a rattling noise coming from the motor.I can't tell if its the pull start or the timing chain.Any help would be appreciated.&Also is there easy way to Tighten up the timing chain?

[MonroeMike]

Cam chain - page 26.

http://72.52.143.80/~trikes/Manuals/ATC%20manuals/ATC200S%2084-86%20Shop%20Manual.pdf

[tri again]

I rcently got a 1985 honda 200s it runs like a champ,but there's a rattling noise coming from the motor.I can't tell if its the pull start or the timing chain.Any help would be appreciated.&Also is there easy way to Tighten up the timing chain?

get a piece of wood like a broomstick or a 3/8 extension if you stay away from the sparkplug and put it up to your ear.

put the other end on various places on the engine

i did that to mine and found out that the gblessed headlight had the perfect resonant buzzrattle/

yea, do the timing chain check/adj and see if there is any kind of time to the sound or is it constant or cyclical like whirring.

there is also a headpipe exhaust spit that really CAN sound like a mechanical engine noise

[jbmatt]

I have what sounds like the same thing on my 200s. It runs great though. If you are able to diagnose this let me know. I would love to make it run quieter.

[tri again]

my computer is running win 98 so I
can't really do much but I guess
it's real easy to upload an audio file.

a cheap tape recorder microphone and almost any
software that come with your os.

Maybe we can start a separate area for uploaded engine sounds and
offer prizes .

people with real computers (newer than 10 years) seem to make youtube work somehow.

I DO think an audio archive would be very helpful.

Let's figure out got to make that happen.

[atc500x]

Tmming chain,or many time the centrifugal timming advance....
start the motor and remove the CDI cover,you will ear the difference

[JustEnough]

Have you adjusted the valves recently? If not, it is worth the effort. It will make a great running engine, run even better.

[Xpress]

Yeah, might be time to do a tuneup. Make it run for another 30 years :)