Noisey Engines?
Hello everyone. Has anyone noticed that these Chinese engines seem to be a liitle more noisey than their Japan counterparts? I just got dont going through a Wilderness 250cc from front to rear, the absolute worst things is for these atv's to sit for a long time. I was just curious as to everyone elses thoughts on the engines.
Tom :huh: |
I havnt noticed that, last time i saw one i couldnt hear him over the rumble of my hmf pipe. :p
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Welcome to the forum Wilderness 250! :)
I am surprised mine all still run..and run well... mine arent noisy.. but my 125 and 150's do vibrate a bit..especially my 125.. Did you buy the Wilderness 250 used? |
I bought it used and sitting a long while. I now have it running excellent except there is valve train ticking that doesnt sound normal to me. I set the valves at 4mm perhaps they need to be a tad bit tighter. This one has me stumped because i cannot see anything that is out of the ordinary.:huh:
Tom |
I'm assuming you meant the valve clearance was set to 0.004 inches and not 4mm. 4mm is about 3/16 of an inch ;).
I don't know about 250cc engines. 0.004 inches (exhaust and intake) on my 150cc GY6 engine works fine. |
I guess the big question is that if the valves get to be too tight will they also tick? I guess its possible because they are working way to hard, after researching a bitI think that setting them at 4mm is indeed to tight, geez I wonder what I was thinking. Back to the drawing board I guess.
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Where are you checking the valves and getting 4mm of clearance?
4mm is .1575 .... 40 X as big as .004 If you have them set at this.. which i doubt..it wouldnt run.. if it did it would be very noisy.. but the valves would be very loose, not tight.. |
You are correct it is .004 not 4mm. I should have made that more clear. I am wondering if they are still to tight. I thought I read on here somewhere that .004 was the setting but it may not have been for the 250's.
Tom |
If they were tight you would have trouble starting it..
Are you sure you are at the correct TDC when you check/set the valves? there are 2 TDC's on a 4 stroke.. you want the one after the intake valve closes. |
I agree. I will double check the settings but it starts right up and runs very good. Its just noisy in the valve area like one is loose, but based on what I am reading its not possible. I set them to .004 but the service manual I found calls for .005 intake and .009 exhaust. So I am clearly tighter than what it calls for yet the noise it makes sounds like its loose :huh:. Thats why I was asking if a tight valve also makes a ticking noise similar to a loose one but not as loud.
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