Reply To: GV 125 S Valve clearance
Hey , if possible, upload a video to youtube and mark it as “unlisted” (means no one will find it on youtube)
Simply just paste the link here:
Make sure the phone or camera is away from the exhaust or too much wind , so we can hear you revving up and letting it idle for a couple of seconds.
While you do that, go to the engine with your ear and a screwdriver, poke the Tensioner with the pointy end of the screwdriver , then your ear on the other end , see if both tensioners make the same noises ? Or if you hear any chain slapping.
Also do the noises change if you pull the clutch IN (pull cable) and clutch OUT (let go)
The idea is to pin point exact noises where are most loudest and it would be the area to work on.
Yes clearances both cylinders:
Intakes = 0.08 (margin 0.01 = 0.07 to 0.09 is OK)
Exhaust = 0.11 (margin 0.01 for any feeler gauge inaccuracies as above)
It would be alarming if it was both 0.03 as no that’s way too tight of a clearance and would disappear when it’s hot. Just a bad day waiting to happen.
Do they sound like this ?
https://www.youtube.com/watch?v=GAWKHBycWvQ
Yes it’s a silly youtube video, but imagine that same ra-tat-tat-tat faster and more metalic higher pitched sounding, then i suspect either clearances or cam tensioner or chains , but if you’re wise enough to remember howw everything was installed, and record yourself ==> Remove the cams and check their bearings and cam-sprockets for any teeth damage.