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  1. Don S

    engine wont start 3.0

    Re: engine wont start 3.0 Your GL-C should start with the kill switch missing, but it will die immediately when you let off the key from the crank position to run. There is a hot start wire from the starter to the ignition to keep the voltage as high as possible when cranking. On that note, is...
  2. Don S

    Merc alpha id

    Re: Merc alpha id 1.65R just means 1.65Ratio, has nothing to do with rotation. The lower is the only thing that changes rotation. It's an R, MR, or Alpha I by looking at the decal and shape and what looks like a flat cap. Serial number will be needed for that ID. The chart below shows where...
  3. Don S

    Mercruiser 4.3 thermostat location?

    Re: Mercruiser 4.3 thermostat location? I doubt the check balls are the cause of the cold running. You do have a raw water cooling system and you need a 143? for that engine. If you boat in fresh water, it won't hurt a thing to run a 160? thermostat.
  4. Don S

    Electric Fuel Pump Nightmares

    Re: Electric Fuel Pump Nightmares Here is the wiring diagram of how Mercruiser wires them. Ni wiring from the ignition switch back to the engine for the fuel pump.
  5. Don S

    What does MY outdrive seawater pump do?

    Re: What does MY outdrive seawater pump do? I merged your two threads together, since your last one misses out on a lot of very important information. There is a diagram on it, I just have to find it. Found it.
  6. Don S

    1972 Mercruiser 165 input shaft yoke

    Re: 1972 Mercruiser 165 input shaft yoke Yes, you should have the short one.
  7. Don S

    Timing Info Needed for '85 140

    Re: Timing Info Needed for '85 140 There are several variations of that tab, below is one. If this one isn't the same as yours, post a clear picture of what you have and I can mark it for you. Like I did this one.
  8. Don S

    Do boats use an o2 sensor?

    Re: Do boats use an o2 sensor? Actually, 94 was the first year Volvo used EFI You do not have an O2 sensor on that engine. This should explain how it works.
  9. Don S

    Timing Info Needed for '85 140

    Re: Timing Info Needed for '85 140 Assuming you have something like the pertronix conversion, no there is no jumping anything to set timing.
  10. Don S

    3.0 GS sometimes slowly looses power at WOT

    Re: 3.0 GS sometimes slowly looses power at WOT Here are the procedures.
  11. Don S

    1991 alpha one

    Re: 1991 alpha one Not really a good way to measure, since that is only for one type of drive. A 91 boat could have ether an Alpha I or an Alpha I Gen II. Both have different dimensions. mercstuff is wrong in so many things. Here is the instructions from Merc that shows the dimensions for all...
  12. Don S

    Mercruiser Thunderbolt V ignition problem?

    Re: Mercruiser Thunderbolt V ignition problem? Here are a couple pictures from a 2001 owners manual.
  13. Don S

    Mercrusier 230 GM 305 no starter response, then it works fine

    Re: Mercrusier 230 GM 305 no starter response, then it works fine Don't go messing with the shift cable adjustment, I doubt that has anything to do with it. Easy enough to check before you get things all out of whack. The fact that the starter won't engage or click could be the neutral...
  14. Don S

    water shutter inspection

    Re: water shutter inspection Normally, you can take the clamps (#4) off, push hose (#5) down over on the Y pipe and remove elbow (#3) and should be able to get to the shutters.
  15. Don S

    need a new trim relay housing for 2003 volvo penta

    Re: need a new trim relay housing for 2003 volvo penta You can always hard wire it with some spade connectors similar to this (just a picture from the internet, has nothing to do with your wire colors or sizes). Here is a wiring diagram showing where the wiring goes on the relay.
  16. Don S

    1999 sea ray 210 trim goes down but not up

    Re: 1999 sea ray 210 trim goes down but not up If the up trim doesn't work, but the trailer up does, you most likely have a defective trim limit switch on the gimbal ring. You don't mention if you have an Alpha or a Bravo drive, but the trim is the same. Here is the troubleshooting procedures...
  17. Don S

    4.3 sx drive loss of power and knocking sound

    Re: 4.3 sx drive loss of power and knocking sound This should explain how to do a proper compression test.
  18. Don S

    4.3 Mercruiser

    Re: 4.3 Mercruiser Actually, the slave solenoid is mounted right next to your push button circuit breaker, and is probably what you hear clicking with the key. Here is some troubleshooting information for your starting system.
  19. Don S

    Where do they go

    Re: Where do they go Should go on the starter small terminal shown by the arrow.
  20. Don S

    how to hook up dash meters

    Re: how to hook up dash meters Here is dash wiring for a Mercruiser of your new engines vintage.
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