Search results

  1. Z

    Backfiring and wont rev up

    1987 Merc 3.0 starts and idles like a dream. Shifts into gear perfect. Anything much over an idle causes backfiring and the engine just wont rev up. Timing is correct. Compression is good. Fresh gas. New plugs. Revs correctly in neutral, but when in gear above an idle it backfires and sputters...
  2. Z

    Merc 3.0 cylinders smoking from the plug!

    Traded my old boat for an 1987 Sea Ray Seville. Merc 3.0 Alpha one. I know the previous owner tried messing with the timing for whatever reason. Well now its mine and it starts great and I was looking over the engine in neutral at an idle, after about 2 minutes smoke started coming from...
  3. Z

    79 merc 90hp not charging

    Been out many times this season and just recently noticed that my battery has been around 11.8 and dropping over time and last night I almost didnt get her started. What would be causing my battery to not charge? I have heard that I need to check my rectifier. According to the manual, take an...
  4. Z

    1979 Merc 900e starter issues

    I recently purchased a 16 foot Glasspar boat with a 1979 90hp Merc 6cyl. The boat came with two batteries, I was told they were good. Put ear muffs on the Merc and turned the key. The starter cranked really slow and weak for about 2 seconds, then took off like crazy (though it took the engine...
Top