Posts
110
Joined
8/29/2018
Location
Union Bridge, MD
US
m1ke20012
1/1/2019 6:26am
1/1/2019 6:26am
Hi, I have a 2008 crf150r that doesnt like to start easily while cold. It takes many kicks and will try to fire but will sometimes do that thing where when you hit the gas to start it, it immediately kills it. Once hot its a first kick bike but cold its the biggest pain, I already shimmed the valves and fixed the accel pump with the o ring mod and free'd up the shaft pushing down on the diaphram, it was getting stuck and not returning. Any ideas? The bike is also rejetted from previous owner as well. specs: main: 138 pilot: 68 leak: 58 the pilot jet is kinda questionable as it doesnt look like the ones in the pictures but I could be wrong.
1. Are you using a choke? If not you should be.
2. Just because your valve clearance is right doesnt mean your valves are in good shape. They may need replaced and your seats recut.
3. Check your valve timing. If your cam chain is stretched it will throw off the timing. The marks to time the motor should be EXACLTY where the manual says they should be. If theyre off youre not time right
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