oneclick
09-23-2008, 07:43 PM
I have a 1985 atc 70 with a honda z50 engine (off a dirt bike), but is using the stock 70 carb... when i got it it was wired incorrectly, i rewired it and it started on the first pull everytime, however it would always wind out at over half throttle every time (wasn't full throttle cause i could push the throttle and it'd still rev higher), i figured the carb needed cleaned/rebuilt... i took the carb off cleaned it inside and out, got it back together and now i can only get it to backfire every now and then.
My brother was saying that it could've jumped time by reving high when starting it, is there any way to check if the timing chain itself is off a tooth or more without tearing the motor apart? If it has jumped a tooth, is there any way to adjust the points to compensate for the jump?
i've checked points and the gapping is within specs, has a new spark plug, good spark and it's getting gas, any opinions?
i also have the complete original 70 engine for parts, but it's in pieces...
** i already have the 70 and z50 manuals, they are no help with my particular question :( So if anyone can help, it would be greatly appreciated! :)
here is a pic of my 70 with the z50 engine (fender/seat and pull start removed)...
http://www.slow-n-low.com/atc70.jpg
Jason
My brother was saying that it could've jumped time by reving high when starting it, is there any way to check if the timing chain itself is off a tooth or more without tearing the motor apart? If it has jumped a tooth, is there any way to adjust the points to compensate for the jump?
i've checked points and the gapping is within specs, has a new spark plug, good spark and it's getting gas, any opinions?
i also have the complete original 70 engine for parts, but it's in pieces...
** i already have the 70 and z50 manuals, they are no help with my particular question :( So if anyone can help, it would be greatly appreciated! :)
here is a pic of my 70 with the z50 engine (fender/seat and pull start removed)...
http://www.slow-n-low.com/atc70.jpg
Jason