spark plug heat range

[awthacker]

I just put the champions back in... The std low-cost one l77jc4. Not looking to drop $50 on plugs.

So it's pretty unanimous that going to a hotter plug is not a good idea?

I mostly run at about 4000 rpm or more (running to the fishing grounds or pulling a tube with kids on it), but do a lot of idling through all the ICW no wake zones and other stuff... 10 minute idle just to get into the waterway.

[spareparts]

do a decarb treatment(use your old plugs) then run some yamaha ring free in your tank

[smokeonthewater]

the hotter plug comes in IF and ONLY IF you have a fouling problem that is found NOT to be caused by mixture or timing being out of adjustment... If you run it and never have any issues then you don't need hotter pugs... ALSO I ALWAYS carry an extra set of gapped plugs and a wrench to change them when running a 2smoke

[phatdaddy]

what oil are you burning?

[awthacker]

Originally Posted by phatdaddy

what oil are you burning?

I use the cheap oil... usually pick it up at WalMart. Sometimes the Evinrude stuff, sometimes the generic-looking stuff in the blue gallon container (don't remember the brand).

On Sunday, it ran awesome. Had it running over 40 mph on the way back in with a light east wind and a small swell behind us. That's with 4 grown men plus scuba gear. I have a 6 gallon pony tank with fresh 93 octane, so I may mix some seafoam with it and do the decarb, but everything seems in good working order.

I had replaced the throttle shift arm back in November after a failed fishing trip, but only started the engine and didn't actually run the boat after the part swap. Then started it in December and felt like something was off. Tach was racing up to 4000 rpm at idle, but I think the tach may have gone bad. Eventually I had a neighbor (not an OMC guy) come check it out with me and he thought everything was fine, but it needed new plugs and some heavy running. Seems to have done the trick.

[THEFERMANATOR]

Try PENNSOIL premium plus synthetic blend oil. It helped me out ALOT with idling. My big 225 that I had didn't idle for crap because of how I had ported it, but on the PENNSOIL I could idle for hours on end with it. I tried the MERC stuff once, and barely made ito ut of the idle zone at the ramp with it.