Does this 2 stroke motor sound right?

[Benji7]

does this 2 stroke mercury motor sound right?

 

[Chris1956]

It clearly has a bad miss. Likely on one cylinder. You should inspect the spark plugs and see if you can figure out which cylinder. Maybe an idle adjustment is in order?

 

[Faztbullet]

Definitely has a electrical problem...take a timing light to each cylinder and see if one is misfiring.

 

[Benji7]

I've been told that I should put it on the water to get it warmed up to give it a real test. Are you guys sure it's a misfire?

 

[racerone]

I concur that there is an electrical issue.-----But maybe the next poster will tell you that there is really nothing wrong with it.

 

[Sea Rider]

Seems to have back fire issues due to electrical components misbehaviours, how old are the spark plugs to start with ? go for a wot run and check if the motor revs good when at full throttle or misses.

Happy Boating​

 

[Benji7]

Seems to have back fire issues due to electrical components misbehaviours, how old are the spark plugs to start with ? go for a wot run and check if the motor revs good when at full throttle or misses.

Happy Boating​

Spark plugs are flat gap ones. They seem fine. How can I find out if they are bad?

 

[Sea Rider]

Spark plugs are flat gap ones. They seem fine. How can I find out if they are bad?

Are those spark plugs the ones without the metal bent portion as traditional ones ? if so, those spark plugs are intended to run constantly at 3/4 to full throttle, excellent for long cruising purposes. Have your tested the spark plugs whichever ones the factory recommended for said motor ? Impossible to tell if with current spark plug issues, installing new ones will surely tell...

Happy Boating​

 

[Benji7]

No the spark plugs are flat gap, I just put in bran new ones tonight and it's still doing it, even when I rev it up a bit. I did a full carb clean as well.

 

[Benji7]

Are those spark plugs the ones without the metal bent portion as traditional ones ? if so, those spark plugs are intended to run constantly at 3/4 to full throttle, excellent for long cruising purposes. Have your tested the spark plugs whichever ones the factory recommended for said motor ? Impossible to tell if with current spark plug issues, installing new ones will surely tell...

Happy Boating​

No the spark plugs are flat gap, I just put in bran new ones tonight and it's still doing it, even when I rev it up a bit. I did a full carb clean as well

 

[Benji7]

Actually I think I figured it out,I just bought this motor recently and the idling was way out and to compensate the previous owner played with the fuel/air ratio and that was the result. Here is a link to the video of how it runs now.

- YouTube

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youtube.com

 

[Sea Rider]

Actually I think I figured it out,I just bought this motor recently and the idling was way out and to compensate the previous owner played with the fuel/air ratio and that was the result. Here is a link to the video of how it runs now.

- YouTube

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.

youtube.com

Congrats, runs much better than before, now ready for a wot run in open waters as if stealing the combo...

Happy Boating​

 

[Benji7]

Congrats, runs much better than before, now ready for a wot run in open waters as if stealing the combo...

Happy Boating​

Thanks for your help, it was nice that someone like you was replying back to me and actually trying to help me figure this out. I was getting pretty frustrated over the weekend and needed someone more experience to toss any suggestions at me. The problem might not be fully solved but I think Im on the right track.

 

[Faztbullet]

It still has a miss....need to check compression and spark.

 

[Benji7]

It still has a miss....need to check compression and spark.

Compressions are 112.5 in top cylinder and 110 in bottom one. Bran new spark plugs. What do you suggest?