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Joe, Marine Mechanic
Category: Boat
Satisfied Customers: 7240
Experience:  ASE, electronics, Marine mechanical and electronics, pwc, wiring, all around repair tech,
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Got a 1990 ts 650 free. Rebuilt carb and fuel pump and also

Customer Question

Got a 1990 ts 650 free. Rebuilt carb and fuel pump and also pump bearings. Jetski is hard to start when motor is cold and hot and does not want to idle real well. Motor will surge at idle on trailer every once in a while. Compression is 120lb. Both cylinders which is borderline. Do you think compression is my problem for hard start and idle issue.
Submitted: 1 year ago.
Category: Boat
Expert:  Joe replied 1 year ago.


Thank you for using, my name is ***** ***** I will be happy to assist you with your concern today.

120psi since both are the same is doubtful of being the problem, if one were 60 and the other 140 then I'd say differently. With that said, I would try a little spray of starting fluid and or choking the carb to see if that allows it to start better, possibly too much fuel, not enough fuel or excess air/leak which could be base gasket, carb gasket, intake gasket, etc. Also check spark and make sure spark is strong not weak and no misfires.

I am just seeing if you still need assistance with this problem? The reason I ask is because I see that your question has not been answered sooner and I wanted to make sure if you still needed help.

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At this time please feel free when you are ready to reply back to me and ask to continue working with me, another expert or if you no longer need help please just let me know exactly what you wish to do.



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