Merc tune-up question

DZ

Have a 2006 246BR with 5.7 & B3, which we bought 4 years ago with 68 hours on it. Have done just the basic oil/lube/winterizing, plus an impeller, and it's been fine. Has about 300 hours now, and on our winterizing bill was this somewhat cryptic message, that I've not yet discussed with our mechanic. "Tune-up is original. We have been seeing a lot of problems with dist caps on this type of dist. Recommend complete tune-up, as it is all original."

The boat ran okay this past season, though it seemed down a few hundred RPM at WOT, and was a bit slower from the start, almost like it would be after a season of gunk on the bottom paint. So, I'm wondering what a complete tune-up entails, and what's potentially wrong with the distributor cap on this engine. Seems reasonable that it might be time, or past time, for a tune-up.

Thanks.

boattech01

on the distributor cap and rotor you will probably see a lot of corrosion on the lugs. this will cause weak spark at the plugs and in some cases will cause misfire. anytime we do a tune up at the shop we do cap, plugs and rotor. you will most likely see the boats performance come back after tune up

DZ

Thanks!

DZ

Thanks for the info, Al!