my 150 has been running fine about month ago it started dropping a cylinder so I put plugs and change my fuel filter and it was running fine then it started again now it’ runs good in early morning you can 6 or 7 miles np fish in the afternoon when you start back sometime it will not get on plane so today I stop cut it off and crank it back up it took off any idea
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2006 Yamaha 150 2 stroke
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Originally posted by Ed99651955 View Postmy 150 has been running fine about month ago it started dropping a cylinder so I put plugs and change my fuel filter and it was running fine then it started again now it’ runs good in early morning you can 6 or 7 miles np fish in the afternoon when you start back sometime it will not get on plane so today I stop cut it off and crank it back up it took off any idea
2000 Yamaha OX66 250HP SX250TXRY 61AX103847T
1982 Grady Weekender/Offshore (removed stern drive & modded to be an OB)
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If it's "skipping" very quickly - almost like someone is flipping a switch, then you could be on the right track as it sounds electrical in nature. If it's much slower, then it's more likely to be fuel related. There are certain things I'm good at, other things I'm not. Checking the various/different coils is not one of those things I can speak of from experience. However, there are tests that can be done to help narrow things down - I looked only briefly, but there is mention of it in the service manual. Maybe you want to invest in one of those? They're not expensive. BUT... good, clean, tight electrical connections are always a great place to start since without that, the rest is sometimes useless.
Youi know, sometimes I re-read my posts after I submit them and I think "what the heck did I just write". It helps to not post "right away"... let it set for a few minutes and go and do something else. Then come back and re-read it (or have someone re-read it for you) to see if it makes sense. Remember, we can only help based on the info that is written - if it is not clear, then the help you get will not be very clear, either.2000 Yamaha OX66 250HP SX250TXRY 61AX103847T
1982 Grady Weekender/Offshore (removed stern drive & modded to be an OB)
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Originally posted by Ed99651955 View PostTalk to the Yamaha people today they think it’s might be coil told me to check the grounds sorry if I did not explain it Right I suffer a brain injury in 2015 some time I don’t communicate very well
Do the plugs look to be all the same color?
Do you have a service manual?
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