JimDirt wrote:Welcome to the site !!
It kind of sounds "normal" to me , maybe a slight bit of timing chain slap , you said you have a manual tensioner , could it be you have the adjustment off ?? , it sounds like the chain may be a little loud , but other than that , i don't hear anything real strange , but videos are always hard to distinguish sounds from because most of the time the speaker system is "tinty" sounding anyway , being in a room that is fairly empty will make sound amplify as well , as will being on concrete , try running it on the lawn and see if its as loud .... Question , do you have a Aluminum Skid Plate ?? , i could not tell from the video as the camera did not go low enough , a Aluminum skid plate will reflect engine noise (any skid plate will , but the aluminum will make it resonate more , so it is louder) , thats the only other thing i can think of by listening to it
These engines are not "quiet" internally , just the nature of the beast , if you listen to any other 4 stroke , they will be noisy as well , if you are away from the exhaust noise you will hear all sorts of things clanging around , its when they get real loud is when you start to worry
JimDirt wrote:Hmmmm , usually its easy to tell what side goes where on a 4 stroke piston with or without a arrow or marking , they have notches/reliefs for the valves , the larger are Intake side , to coincide with the larger Intake valves, the smaller coincide with the smaller Exhaust valves , so its usually hard to get it mixed up , but sometimes in haste to get it back together things get overlooked
Not the first time i have heard of this happening , but its not common to do it ..... hopefully nothing got damaged in the time it ran and you will be able to reverse it and get it running again (once you confirm that it is in fact reversed) , check the skirt for any damage/cracks , wear , etc , you don't want to put it back together and have the piston skirt break off and cause serious damage ...
JimDirt wrote:Well , at least you eliminated one thing , you can look at it that way , your positive on valve adjustment correct ?? , triple checked ?? , back to timing chain , did you check the tab at the bottom (behind the flywheel) that keeps the chain from falling down off the lower sprocket ?? , it is possible to have bent it , and it might be rubbing on the chain ....just something else to check while your in there
JimDirt wrote:Well at least you were persistent and continued looking , and actually found things wrong (that's a good and bad thing), hopefully this is all it is , and you can get back to riding , never thought that noise would be originating from the water pump though ...
Users browsing this forum: No registered users and 4 guests
Copyright 2016-2017 © CRF's Only Forums. All Rights Reserved.