1985 Black Max

[jims38305]

Greetings,<br />I am running a 1985 Black Max 150. Still runs great. Smokes when you crank it up though, I am not bothered with skeeters. I was checking the oil injection setting against the shop manual and it is about 1/2 to 3/4" rich from what the manual says. <br /><br />My question is do I need to run the oil that much rich on that old of a motor or should I back it up maybe half way? I sure do not want to burn up the motor just for the sake of some smoke on start up. The motor has run good for me the 6 years that I have had it, knock on wood.<br /><br />thanks for the input.<br /><br />Jim

 

[dakk1]

Re: 1985 Black Max

If it was mine and it "still runs great", I wouldn't fool with it. A little smoke at start up is pretty common on these outboards of that vintage.<br /><br />Dave..

 

[BF]

Re: 1985 Black Max

Hiya & welcome!<br /><br />The smoke isn't necessarily due to the adjustment of your oil injection. I have an '82 V150 that I mix the gas/oil for. Even at 50:1 it's the smokiest motor around... it's only noticable at startup and when idling.<br /><br />Like yours, my 150 runs great... I'm not worrying about the smoke (but yes it's annoying at times).<br /><br />Also I'd be very leary of adjusting the oil pump based on some measurement from a manual. The only thing that matters is how much oil gets used out of the reservoir when you burn a known amount of gas. Then calculate the ratio it's using. If it is using an excessive amount of oil, then you could back it down a bit (and re-check consumption). Don't go by the smoke, on mine it looks like I'm mixing about 20:1 (but I'm not).

 

[andy6374]

Re: 1985 Black Max

I know the "if it ain't broke, don't fix rule it" rule applies here. But I would seriously consider disengaging the oil injection and running a 50:1 premix. The oil injection system on 80's Black Max's is so famous for failure that it isn't even a decsion for me anymore. Running a premix is peace of mind and the worst thing that can happen is running out of mix, instead of your engine going into a nice seize.<br />You will have to decarb more often though.<br /><br />Just my humble opinion-<br />Andy