Recent content by vipertec

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    1989 black max needs CPR STAT!!!

    my engine years ago developed a problem where under accel would lack full rpm.It would jump up about 500 rpm after say 5 min driving and be ok.Eventually got to to the point of only getting up to 1000 rpm ,could not get on plane until 1/2 hour of messing with it.I am an auto tech by...
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    1989 blackmax 150,no power when cold

    I have an 1989 blackmax 150 hp on a 18ft bassboat.a couple years ago it started to have no accel when cold.In gear could not get accel more than 800 rpms.Tryed cleaning carbs,n/g,primer bulb when accelerating,n/g,new plugs,n/g.After 30 min of poor running rpms will slowly bump up,eventually...
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    89 blackmax 150 runs poor when cold

    I have a 150 blackmax that runs terrible when running for first 1/2 hour.In neutral i can get high rpms,but when in gear I can barely get 1200 rpm.If I try to throttle more it stalls.As the engine runs(approx. 1/2 hour)the rpms will slowly increase to 1500 then 2000 then eventually will...
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