PLEASE READ: I fear I may have Major engine failure:
[img]graemlins/crying.gif[/img]
I was out on the lake yesterday trying to fine tune my carbs a bit. I decided to richen up all the high and low screws anywhere from 1/4 to 1/2 turns. To test out the change, I was racing back and forth at full throttle. After about 3 minutes, the motor started to sound like it lost a cylinder and I began losing power! I heard an unusual vibration (CLANKING) noise! Anyhow, the motor seized on me and I had to get towed back to shore!
[img]graemlins/cwm3.gif[/img]
Once I got it back on the trailer and out of the water, I did a little inspection. I found that the spark plug from the #1 cyclinder (mag side) was damaged! I just put in new plugs about 30 minutes earlier and gaped them at .031in. The #1 plug now has ZERO gap like it had been pushed up by the piston! Also, it was grayish in color and had lots of debry melted to it! What does that mean?
I was able to spin the coupler to get the motor free. The motor did turn over, but there was a VERY unusual loud clanking noise coming from the mag side of the motor!
Additional details: I use 87 octane, I DO NOT premix the oil and gas. What else do you need to know?
[img]graemlins/crying.gif[/img]
I was out on the lake yesterday trying to fine tune my carbs a bit. I decided to richen up all the high and low screws anywhere from 1/4 to 1/2 turns. To test out the change, I was racing back and forth at full throttle. After about 3 minutes, the motor started to sound like it lost a cylinder and I began losing power! I heard an unusual vibration (CLANKING) noise! Anyhow, the motor seized on me and I had to get towed back to shore!
[img]graemlins/cwm3.gif[/img]
Once I got it back on the trailer and out of the water, I did a little inspection. I found that the spark plug from the #1 cyclinder (mag side) was damaged! I just put in new plugs about 30 minutes earlier and gaped them at .031in. The #1 plug now has ZERO gap like it had been pushed up by the piston! Also, it was grayish in color and had lots of debry melted to it! What does that mean?
I was able to spin the coupler to get the motor free. The motor did turn over, but there was a VERY unusual loud clanking noise coming from the mag side of the motor!
Additional details: I use 87 octane, I DO NOT premix the oil and gas. What else do you need to know?
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