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  1. Don S

    4.3 Will not run!! Help!

    Re: 4.3 Will not run!! Help! That box on the manifold, does it look like this. Lots of things could cause no spark. Here is the troubleshooting chart.
  2. Don S

    93 mercruiser 3.0 digital electronic ignition

    Re: 93 mercruiser 3.0 digital electronic ignition Sure, read this.
  3. Don S

    How do you charge a second battery

    Re: How do you charge a second battery The problem with your drawing, is there is no way to charge the accessory battery, only the starting battery. You need to have either an ACR (automatic charge relay) or a battery isolator to charge both batteries. Like this.
  4. Don S

    1986 Electromechanical Tilt Mechanism stuck or jammed in down position

    Re: 1986 Electromechanical Tilt Mechanism stuck or jammed in down position If you release the lockdown mechanism manually, will the drive then tilt up normally?
  5. Don S

    Mercruiser 350 Alignment Issues

    Re: Mercruiser 350 Alignment Issues Turn the bearing, if it's not perfectly smooth, replace it. You do understand the inside portion of the bearing actually "gimbals" in the carrier (outer ring). It doesn't move easily and you have to use some force with the alignment bar to move it, but you...
  6. Don S

    reading timing scale

    Re: reading timing scale Three marks up from the 0 towards the A is 6? BTDC.
  7. Don S

    Mercruiser MPI 4.3 sometimes cranks on first turn of the key and other times not

    Re: Mercruiser MPI 4.3 sometimes cranks on first turn of the key and other times not If you are getting just a click and the engine isn't turning over or the starter engaging, then you either have poor connections somewhere, intermittent slave solenoid or intermittent starter solenoid. Test it...
  8. Don S

    Mercrusier 4.3 electrical problem; ignition fuse & fuel pump

    Re: Mercrusier 4.3 electrical problem; ignition fuse & fuel pump When the starter is cranking the engine, power from the starter solenoid is powering the fuel pump. When it starts, the power to the fuel pump shuts off. Since the engine is running, the oil pressure switch now has pressure and...
  9. Don S

    wont boot up

    Re: wont boot up Here is step 1.
  10. Don S

    Mercrusier 4.3 electrical problem; ignition fuse & fuel pump

    Re: Mercrusier 4.3 electrical problem; ignition fuse & fuel pump Might be because it should be a 20A fuse. #9 in the drawing from the service manual.
  11. Don S

    I am new to owning a boat and need a little help

    Re: I am new to owning a boat and need a little help The NGK 3623 is just the stock number for the BPR6EFS plug. Also, you DO NOT have to run synthetic oil. And don't talk to that guy again. I assume he was the salesman at WM? This is from the owners manual for your engine. Volvo doesn't...
  12. Don S

    How do you charge a second battery

    Re: How do you charge a second battery You must have the negative wires, or nothing works. Here is how your system should be wired. Note the orange wire coming from the alternator to the starter solenoid. That is the main charge wire coming from the alternator and should be an 8 ga. wire. If...
  13. Don S

    I am new to owning a boat and need a little help

    Re: I am new to owning a boat and need a little help Either the AC MR43LTS or NGK BPR6EFS will work. GM engines come from GM with AC plugs in them. .045 is the correct gap. There is nothing wrong with using the NGK plugs in GM engines. Yes. What moron told you that. You have a fill cap...
  14. Don S

    Mercruiser 3.0 Alpha Starter Wiring Confusion

    Re: Mercruiser 3.0 Alpha Starter Wiring Confusion See if this file will help you troubleshoot it.
  15. Don S

    trim limit switch

    Re: trim limit switch No, the pump will not shut off automatically going down. You can't set the trim limit while in the down position, you have to raise the drive up to a specified distance to adjust it. Instructions below.
  16. Don S

    Steering Issu

    Re: Steering Issu He has an SX drive. It's the only drive used on a 3.0 from the mid 90's to 2006. There should be an adjustable trim tab on the back of your drive that you can adjust to equalize steering.
  17. Don S

    Replacing u-joint bellows on volvo 280 and have a few questions

    Re: Replacing u-joint bellows on volvo 280 and have a few questions Here is the clamp positions for your bellows.
  18. Don S

    should I be able to shift 270T outdrive without engine running?

    Re: should I be able to shift 270T outdrive without engine running? Below is a picture showing where the cable (#2) is located and hooks to the drive. Disconnect it and see if the drive linkage works. Probably that cable (#2) is what is bad.
  19. Don S

    Mercruiser5.0 ltr ECM Problems

    Re: Mercruiser5.0 ltr ECM Problems Here is some troubleshooting info for your system. I edited out all the info for the other type ignition used so it doesn't confuse things.
  20. Don S

    Mercruiser5.0 ltr ECM Problems

    Re: Mercruiser5.0 ltr ECM Problems With power off, check the primary and secondary resistances of the coil.
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