Fouled plugs -- '60 Johnson 40hp

[FishMagnet]

Last time I took my old boat out on the lake she was running great. I set her up in the driveway yesterday to run it for awhile and check the timing. After a VERY hard start it started running rough, better after a long warmup. At random intervals though it would "miss" sometimes enough to kill the motor. I ended up taking the plugs out and they were quite black and grungy.<br /><br />The oil/gas is mixed correctly and the low and high speed setting have been set using the J.Reeves method. <br /><br />I'm hoping for any suggestions on where to start looking. I do use the boat mostly for fishing, should I think about switching to J6C Champions? (I'm currently using the recommended J4c)<br /><br />Thanks,<br /><br />Matt<br /><br />P.S. Paul, if you're reading this. The timing was on the very right side of the | | mark. In case you're curious.

 

[FishMagnet]

Re: Fouled plugs -- '60 Johnson 40hp

bump

 

[rolmops]

Re: Fouled plugs -- '60 Johnson 40hp

Hello.<br />You may want to check the needle settings again.It happens quite often that they vibrate loose and open up.The result is a far too rich mixture.

 

[FishMagnet]

Re: Fouled plugs -- '60 Johnson 40hp

Update:<br /><br />Threw in some new J6C's, fired up and ran like a champ. We'll see if these get fouled up.<br /><br />Matt

 

[Paul Moir]

Re: Fouled plugs -- '60 Johnson 40hp

Nice job with the feeler gauge!<br /><br />Tell us how the J6Cs work out for you.

 

[FishMagnet]

Re: Fouled plugs -- '60 Johnson 40hp

I wasn't happy with being off to the right in the | | mark, so I reset the points today. Now its right in the middle. I know it probably doesn't matter, but I can sleep better tonight. lol<br /><br />I'll let you know on the J6Cs.<br /><br />Matt