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  1. M

    Propeller pitch, diameter and number of blade recommendation

    Edit: Threads merged. iBoats Mod Team.
  2. M

    Propeller pitch, diameter and number of blade recommendation

    I have a 2004 3.0 litre Mercruiser sterndrive that the currently has a damaged 4 blade prop on it which I am going to replace. Looking in the prop section of this site it looks like the 3 blade may of been standard and I can seem to find in the manual what pitch and diameter would of been...
  3. M

    Knock Knock..

    Just replaced NGK BPR6EFS spark plugs on a 3.0L Mercruiser and noticed the one that came out of cylinder 4 has two cracks in the white insulator (from the top down) . The plug was very tight so my first thought is too much force on the wrong angle and I must have caused the damage while...
  4. M

    I apologise in advance for what might seem a stupid question...

    I have a 3 litre Mercruiser that I want to check the oil level on while on the trailer (in a 2004 Searay bowrider). The manual says "Stop the engine. Allow approximately five minutes for the oil to drain into the pan. The boat must be at rest in the water. Remove the dipstick...." I have not...
  5. M

    Turn the key, nothing happens

    Re: Turn the key, nothing happens OK, firstly thanks for your detailed point by point instructions. For a beginner like myself who did not even own a test light or know what a solenoid was or did before today they were very informative. I have run your tests and the verdict is a bad...
  6. M

    Turn the key, nothing happens

    :confused:Boat starts fine first off but after a run and has sat for a while am getting nothing when the key is turned. I try all the obvious things (no battery switch, to turn on), lever is in neutral, lanyard stop switch is OK, have fuel, connections on battery are cleaned every trip so not...
  7. M

    Outside USA-Standard 91 or Premium 98 what should I use in a 2004 3.0ltr MerCruiser?

    I am in Australia and have been using Premium unleaded 98, however noticed on muffs it blows a bit of black smoke on start up and also a puff when revved. Is this because the fuel is to rich and would I be better of using the more Standard unleaded 91? Manual only says (for outside USA and...
  8. M

    HELP - massive oil leak / spraying on left side of motor in engine bay

    Bought a Searay with a 2004 135hp 3.0 litre inboard mercruser six months ago, had it serviced after I bought it (compression check OK then) and it has been a faultless family boat, well untill yesturday. I am after some advice as to what would cause a sudden loss of oil pressure and oil spraying...
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