get rid of myplugs

[cwilt]

does anybody know if you get rid of the electrode-less spark plug and install the (regular) plugs,on mercs. something about the spark hitting the piston erks me.

 

[Paul Moir]

Re: get rid of myplugs

Welcome to Iboats, cwilt!<br /><br />Could you please describe your engine a little? Preferably HP, how many cyls, serial number/year? And maybe what spark plugs you've got in there now? It's a pretty popular change on OMC V-4 engines, but not so popular on mercs. It may not be possible depending on your engine.<br />If I told you that the spark jumps between the electrode and the shell of the plug, not the piston, would that make you feel any better?

 

[Laddies]

Re: get rid of myplugs

your ign. don't fire to thr top of the piston like you stated it, it fires to the outside of the plug

 

[Laddies]

Re: get rid of myplugs

Sorry Paul I didn't see youhad aready explained this Bob

 

[cwilt]

Re: get rid of myplugs

Originally posted by cwilt:<br /> does anybody know if you get rid of the electrode-less spark plug and install the (regular) plugs,on mercs. something about the spark hitting the piston erks me.

 

[cwilt]

Re: get rid of myplugs

thanks, <br /> it's a 90 hp 2003 merc. the idles been rough since new, hot or cold. i can see my piston tops and are pretty dirty (looks like carbon) but plugs are clean . aceleration is good. plug type (stock)NGK buhw-2.

 

[steam_mill]

Re: get rid of myplugs

cwilt:<br /><br />Your motor runs a little rough due to the 3 cylinder design.<br /><br />I've got the same motor and it is a common complaint. If you do a search on Merc 90 hp you will see a lot of suggestions to smooth it out like enriching the top cylinder.<br /><br />I suspect that your piston tops are not as dirty as black. Dark pistons are normal.<br /><br />What oil are you running?<br /><br />Joe

 

[cwilt]

Re: get rid of myplugs

thanks joe<br /><br /> i'm using the quicksilver premium oil<br /><br /><br /> chris