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  1. trevtt600

    140 Mercruiser advanced timing ?

    1978 Mercruiser 140, Delco distributor. I have a dial-back advanced timing gun. When you set the advanced timing, do you subtract the intial timing of 6 from the 35@2000 and set the gun to 29 degrees, or do you just set the gun to 35 degrees and move the distributer to match TOD. After the...
  2. trevtt600

    3.0L exhaust shutter question

    Have a 1989 Wellcraft with Mercruiser 3.0L, alpha 1 outdrive. Motor is actually a 1978 though. I have what sounds like a rattle of some sort coming from the back of the engine down by the drive shaft. I was looking on iboats lastnight and saw that the exhaust shutters can cause quite a...
  3. trevtt600

    Shift box issue

    I have a older style quicksilver shift box, 1989 year, that has a slop in the remote shift cable attach point in the shift box. Its almost an half inch. I cannot get my shifting adjusted properly and i think this is my issue. Any suggestions.
  4. trevtt600

    3.0L Vibration at 2500 RPM

    Hello All. Took the boat for a ride with "new" motor today. Its a 3.0L mercruiser. Have an alpha 1 drive. At 2500 rpm when coming off the throttle i get a pretty serious vibration. It you try to cruise at 2500 same viration only not as bad. Seems like it is happening when the drive gets...
  5. trevtt600

    3.0 Mercruiser water in valve cover

    I purchased a used 3.0 to replace mine with a cracked block (motor has a 30 day warranty). I ran it for the first time today out of the boat on the ground. After i ran for about 5 minutes or so, i shut it off, and removed the valve cover oil cap. I notice a water/oil milky mixture in the...
  6. trevtt600

    Side mounted shifting vs. valve cover shifting

    Hey guys. Here is my dilemma. I am replacing my 3.0 mercruiser which currently has the valve cover mounted shifting. I have been having problems with the shifting out of foward and reverse even after a new shift cable and following the adjustment procedures. The new to me motor I just...
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