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My first post, if I'm not following guidelines please let me know! Thanks for allowing me to join.
Have owned several YAMAHA motors, in fact it's the only brand I plan to ever own. Some have been new, I.E. 1-40, 1-60 , 2-90 2 strokes and 1-150 4 stroke.
Most recently an 05 2-stroke 60. I really like the 3 cal YAMMI 2 strokes. 4 stroke is the ultimate but still kinda heavy. However if I cold afford a new motor I probably would go with a 60 4 stroke, considering weight limitations on current boat. O'k sorry to ramble!!! My problem
Bought current boat, a while ago. Finally started and launched it. It ran great! We have had it out 4-5 times with no problems at all until......Last time out we were on plane fine, had been 3-4 miles when all of a sudden I lost #2 cyl. Tried this and that. I had a can of starting fluid, remover carbs cover, while wife was driving. Squirted a quick squirt in #2 and if fired immediately for a second. I said ok its lack of fuel. Go home sure enough pull plug wire while it's running def. not firing. Pull plug it was wet. buy new plugs, same deal. Remove all 3 carbs, (have rebuilt several in past). Piece of dirt in main jet, #2 partially plugging. Small area of oxidation, for lack of better word bottom corner of fuel bowl. Clean it out, remove float, jet etc. used carb cleaner, blew out all passageways etc. Decided to do same to all 3 carbs. Note: new fuel filter, had previously replaced fuel lines form tank. No water.
Replace the carbs etc started engine. Remember had no fire #2 Cal before. Now #2 is the only one that fires!!! No fire #1 and #3!! Appears no spark #3 and VERY weak #1. I take compression test my gauge SAYS only 30 PSI all 3! Compression should have nothing to do with spark right? Seems impossible to me as motor runs on #2 on hose and #2 only. I will say it seems quite strong on #2. I say if the 30 PSI was correct it wouldn't run on any. Also PSI the same all 3 I suspect gauge is screwed. Swapped plugs and coils from alll cyls around, same thing, runs on #2 only.
Removed cleaned all 3 again will put on and try again today. MAY of had small speck in jet #1. Makes no sense to me!
Any ideas?? Thanks for any suggestions.
Have owned several YAMAHA motors, in fact it's the only brand I plan to ever own. Some have been new, I.E. 1-40, 1-60 , 2-90 2 strokes and 1-150 4 stroke.
Most recently an 05 2-stroke 60. I really like the 3 cal YAMMI 2 strokes. 4 stroke is the ultimate but still kinda heavy. However if I cold afford a new motor I probably would go with a 60 4 stroke, considering weight limitations on current boat. O'k sorry to ramble!!! My problem
Bought current boat, a while ago. Finally started and launched it. It ran great! We have had it out 4-5 times with no problems at all until......Last time out we were on plane fine, had been 3-4 miles when all of a sudden I lost #2 cyl. Tried this and that. I had a can of starting fluid, remover carbs cover, while wife was driving. Squirted a quick squirt in #2 and if fired immediately for a second. I said ok its lack of fuel. Go home sure enough pull plug wire while it's running def. not firing. Pull plug it was wet. buy new plugs, same deal. Remove all 3 carbs, (have rebuilt several in past). Piece of dirt in main jet, #2 partially plugging. Small area of oxidation, for lack of better word bottom corner of fuel bowl. Clean it out, remove float, jet etc. used carb cleaner, blew out all passageways etc. Decided to do same to all 3 carbs. Note: new fuel filter, had previously replaced fuel lines form tank. No water.
Replace the carbs etc started engine. Remember had no fire #2 Cal before. Now #2 is the only one that fires!!! No fire #1 and #3!! Appears no spark #3 and VERY weak #1. I take compression test my gauge SAYS only 30 PSI all 3! Compression should have nothing to do with spark right? Seems impossible to me as motor runs on #2 on hose and #2 only. I will say it seems quite strong on #2. I say if the 30 PSI was correct it wouldn't run on any. Also PSI the same all 3 I suspect gauge is screwed. Swapped plugs and coils from alll cyls around, same thing, runs on #2 only.
Removed cleaned all 3 again will put on and try again today. MAY of had small speck in jet #1. Makes no sense to me!
Any ideas?? Thanks for any suggestions.
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