95xp runs great until it warms up.

[95xp chuck]

Hello, my 95xp runs great for about 10mins until it warms up and then it bogs down. When I gave it gas it sounded like it went under a load but won't go anywhere. I took off the seat and sprayed some gas into the air box when I gave it throttle and that did not change the speed. When it finally went faster a big cloud of blue smoke came out. This makes me think it's spark related but I'm looking for some advice on what it could be. Thanks!

 

[etemplet]

Do a compression check. If you're getting more than the normal amount of smoke you have may have a crankshaft seal leak. Oil will come from the rotary valve chaber and into the combustion chamber. I think the best course of action is always.... compression check first. Hope that turns out well. Your lookig for 150psi. I don't like anything under 135psi. Good Luck !!

 

[POPPS]

Check your spark,,,could be coil breaking down,,,is the battery up to snuff,,,is it charging,,,?rule out the simple stuff.,,,and "e" is dead on,,,rule out compression.

 

[95xp chuck]

Compression in both cylinders is 150. The battery and coils/computer is all good asbwell. What would be the next step

 

[AKnarrowback]

Once it is warmed up is it difficult to start?

 

[95xp chuck]

Yup

 

[AKnarrowback]

Check your rotary valve clearance.

Not saying it's the cause, but hard starting when warm is one of the conditions excessive RV clearance can cause.

 

[POPPS]

AK is on,,,thinking a coil breaking down after it gets warm,,,seams like a crazy bog,,,or the rv clearance is to large,,,that clearance is your primary source of combustion.

 

[AKnarrowback]

The process to check clearance is outlined in the shop manual. I have always used the feeler gage approach.