This is my first dirtbike, a no name chinese dirtbike from Shucks. I am new to dirt biking but my Dad is heavily involved and he has been riding for years and we have been working problems out of it but this one has plagued us... we have jus been kicking it over and over or bump starting it, but it bruised my dads ankle badly so I've decided to ask around and see if anyone else has had a problem like this and what they did about it... Thank You in advance.
2006-08-23 22:04:34 · 9 answers · asked by Anonymous in Cars & Transportation ➔ Motorcycles
I had a 1960 BSA A60, the fuel shut off valve failed one night and the next morning i couldn't even get the kick start to go down.. I took the spark plugs out and kicked it and gas shot about 3 feet out of the holes...the top of the cylinder apparently was bound tight with leaking gas....probably not what is going on with your bike, but it does happen...
2006-08-27 22:44:13 · answer #1 · answered by Marvin C 4 · 0⤊ 0⤋
linxiu78 gave a good answer. A 4 stroke with high compression can be a nightmare to start. That's why I'll never buy a 4 stroke dirt bike. I'm a big guy and I have problems starting them if they're not perfectly tuned.
-If it has a compression release lever - with the choke off, kick start it fast a few times.
-Turn on the choke
-Slowly kick it until you feel the compression (piston going up to TDC of the compression stroke).
-Continue moving the kick start untill the piston just goes past TDC (the compression will ease up a little).
-Release the compression release lever.
-Kick start it as hard as you can while turning the throttle (handle bar twist grip) at the same time.
2006-08-24 04:04:41 · answer #2 · answered by guardrailjim 7 · 0⤊ 0⤋
First you have to learn how to kick start a 4 stroke bike. Its most likely a 150cc 4 stroke. The easiest way is to get the piston up on compression. To do this push down on the kicker slowly until you feel a resistance. Then push down with your full body weight the whole way through the cycle. If the kicker happens to be down pretty close to the bottom of its cycle just let it come up and then push down on it with your full body weight in one smooth motion. It takes awhile to get a technique down but usually its no big deal. You cant really kick a 4 stroke over like you do a 2 stroke unless its something like a 80cc 4 stroke. Even really large 2 strokes like a 500cc you have to kickstart like a 4 stroke.
You would be surprised at how much easier it starts.
2006-08-24 00:39:25 · answer #3 · answered by Anonymous · 1⤊ 0⤋
You do not say whether it is a 2 stroke or 4 stroke. I would suggest you get a compression test done first to determine whether it is of high compression or there is something wrong internally with the kick start mechanism. An easy way is to take the spark plug out and try to turn the engine over by hand.
2006-08-24 00:05:35 · answer #4 · answered by AussiePete 3 · 0⤊ 0⤋
You can put a compression release valve in the head. What you do is release some compression just enough to kick start it with out kick back.
2006-08-28 09:33:11 · answer #5 · answered by Anonymous · 0⤊ 0⤋
You might check the thickness of the cylinder head gasket. Maybe a previous owner of your bike installed a thinner gasket to gain performance. That would explain the difficulty in starting the bike. Good luck.
2006-08-23 22:55:45 · answer #6 · answered by ilbello 2 · 0⤊ 0⤋
Wear mx boots, that will protect your foot while starting, allowing you to put full effort into it, without bruising your instep.
2006-08-25 10:37:29 · answer #7 · answered by moolie_wfo 5 · 1⤊ 0⤋
you could bump start it. putting it in 2nd or 3rd gear & push it down a hill. thats what i had to do on my yz465. till i got me some motorcycle boots. there are pretty heavy.
2006-08-28 12:13:24 · answer #8 · answered by chevytrk1232000@yahoo.com 4 · 0⤊ 0⤋
maybe try honeing, or boring the cylinder
2006-08-29 11:40:59 · answer #9 · answered by Anonymous · 0⤊ 0⤋