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Hi there. I'm at the end of my tether! 
I have 2 Yamaha 1989/99 60FETOL 2 -stroke motors on one of my boats. One motor is really not happy. It ticks over ok but under load especially around approx 1500-2000 rpm it starts missing and smoking. At higher revs it it runs ok but then doesn't rev as high as the other motor have the same power or rev cleanly. Occasionally while running suddenly the engine picks up and runs well for a few minuites, then drops back on the revs. As I have two motors that are identical I've swapped the following, fuel cans, supply hoses, carbs, CDI units, plugs, ignition coils and ht leads. I've also checked that the compression is ok, both engines match. I'm running out of options. Any suggestions apeciated. Many thanks. Ed
I have 2 Yamaha 1989/99 60FETOL 2 -stroke motors on one of my boats. One motor is really not happy. It ticks over ok but under load especially around approx 1500-2000 rpm it starts missing and smoking. At higher revs it it runs ok but then doesn't rev as high as the other motor have the same power or rev cleanly. Occasionally while running suddenly the engine picks up and runs well for a few minuites, then drops back on the revs. As I have two motors that are identical I've swapped the following, fuel cans, supply hoses, carbs, CDI units, plugs, ignition coils and ht leads. I've also checked that the compression is ok, both engines match. I'm running out of options. Any suggestions apeciated. Many thanks. Ed
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