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Black smoke...oil loaded in the heads. Blue smoke...too much fuel in heads. White smoke... Coolant in same. Check oil level to see if there's gas in the oil...If so, carburetor float is stuck open allowing fuel to flow into the cylinder heads.
My feeble understanding is that black smoke is fuel related and blue smoke is oil related?????

Dave
 

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All I can find on the Z930M for engine is F80IV which is a Kawasaki engine at 25.5 HP.

Dave
 

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I could not find a listing for the F80IV engine, so looked up the next higher HP which is the 31HP FX921V that I have in my Z960R.

Dave

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If you can start it with starting fluid, then my opinion is that you have a fuel delivery problem. Have you tested the fuel pump? Take the output hose off and crank it to see if any fuel comes out.

Dave
 
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