Whaler Central - Boston Whaler Boat Information and Photos

Thread subject: Whaler Central - Boston Whaler Boat Information and Photos :: rough idle

Posted by django on 09/06/08 - 2:06 PM

Hi, I'm new here and relatively new to Boston Whalers, what I have found out so far I am very impressed with, I have a 1995 Dauntless 13 with a 2000 50 HP merc great little boat, so far has been exactly what I needed for my purposes, my question is this the motor seems to run great when I get up past idle but idles pretty rough, I pulled the plugs today and they all seem oily to me, is there an adjustment on oil mixture or is that automatic?

Posted by John Fyke on 09/06/08 - 2:25 PM

I don't know how long you have had this boat but I would NOT start fooling with carb adjustments until you a) tune up b) check gas for contamination.

Posted by Troy on 09/06/08 - 2:59 PM

Have you been using Seafoam? I would also replace the plugs just as a maintenance item. Enjoy the boat!

Posted by MW on 09/07/08 - 1:02 AM

How old are the plugs ? New plugs make a world of difference. You should be using a "Carbon Guard" (BRP) not sure what Merc call's the fuel additive or at least some "Sea Foam" in the fuel tank. Gasoline quality is poor with new blended fuels today, specifically "Alcohol" which is now added.
mw

Posted by django on 09/07/08 - 7:41 AM

the plugs are new, I put a little sea foam in everytime I buy gas and I only use premium nonoxygenated gas

Posted by Derwd24 on 09/07/08 - 8:49 AM

Do you notice more smoke from the engine than you have in the past? If there's a bad fuel line or air leak somewhere in the fuel system, the aerated fuel can cause the oil pump to inject more oil resulting in wetter plugs and smokier operation.

Posted by django on 09/07/08 - 9:14 AM

I don't lose prime so I think the tank and line are good, on the other hand the tank is metal and I have been thinking about getting a new tank and fuel line maybe it is time, see what happens

Posted by Derwd24 on 09/07/08 - 9:26 AM

You can still have prime with an air leak though. My old engine ran fine, just smokey and oil on the plugs. I replaced all the fuel lines (they were due anyway), and in the process solved the air leak. Motor ran much cleaner and the plug oil issue was solved.

Edited by Derwd24 on 09/07/08 - 9:37 AM