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  1. alldodge

    No start situation

    Want to see if the spark is steady as motor cranks. Should get 2 sparks with each revolution. Crank it a good 10 seconds and see if it stays constant. Should jump 0.40 easy enough even though your plugs are .35. Should also be white or Blue
  2. alldodge

    Mercrusier 350 MAG MPI - RPM issue under a load

    No, Need to see what its doing under load
  3. alldodge

    No start situation

    Need to better understand the orange spark and make sure its orange. Even orange should ignite gas. Can use a spark plug from the coil to ground but it would be better to use a spark gap tester. Can set it up and see if its a good spark...
  4. alldodge

    No start situation

    You have 12V at the coil, so I would not suggest running jumpers. Jumpers are good for a quick check but can also cause damage if connected incorrectly
  5. alldodge

    Mercrusier 350 MAG MPI - RPM issue under a load

    That's the right one Measure this while running MAP pin 1 and 3 to see what the Temp volts show MAP pin 1 and 4 to see what the Pressure volts are At WOT 1 to 4 should show 4.5 or so volts, and idle should be 0.5V Also check TPS pin B and C to see position Same voltage readings for TPS as MAP...
  6. alldodge

    Please help

    Not an OB guy but your going to need the motor scanned. The 32 on the oil says its not working, and my guess is there is other things that are not working also. Mercruiser has a in gear switch and don't know if your OB does, but a Merc sounds an alarm above 2500 RPM if the ECM thinks the motor...
  7. alldodge

    Mercrusier 350 MAG MPI - RPM issue under a load

    Reving doesn't mean anything other then the motor can rev that high We keep coming back to the MAP What is the part number of the MAP? When you say your unplugging the MAP, is that electrical connector correct? Have we checked the 5V reference at the MAP, Gray wire to Blk/Pink to see if its...
  8. alldodge

    Mercrusier 350 MAG MPI - RPM issue under a load

    MAP, TPS, Temp and RPM MAP increases pressure as the throttle opens and vacuum is reduced TPS how far open it is Temp tells if its cold and needs more fuel or warmed up and needs a tad less RPM how often injectors fire Fuel tables are setup inside the ECM so as things change the fuel tables are...
  9. alldodge

    No start situation

    See if your getting 12V at the coil purple wire with key ON. If its there then the man overboard is connected.
  10. alldodge

    Volvo penta stalling help

    Fuel pressure, TPS and MAP
  11. alldodge

    Volvo penta stalling help

    It should never just die going to neutral. Something isn't right, unless it has something like a vacuum leak but that would have other issues Fuel pressure should be 40 psi
  12. alldodge

    Ran amazing then shake no thrust

    Might be the anchor set screws backed off and center wire slipped out. Remove the cable and plastic guide from the carb and see if it comes off when pulled
  13. alldodge

    Volvo penta stalling help

    New to me is anything with a computer. No way I'm buying a CAT motor The Techmate with adapter is good thru current CAT motors, just need different adapters. THe CAT motors require another 300 for adapters, but prior to that their around 50 each based on which ECM/PCM is installed
  14. alldodge

    Volvo penta stalling help

    The gauge can be off, so might not be an issue. If power at the motors are less then it can be a problem. Are ground cables clean and tight, and any corrosion on starter post and other connections? The rinda Techmate will cost 500 with the single adapter for your motor. These new motors is a...
  15. alldodge

    Ran amazing then shake no thrust

    I'm old and not clear on if the cable is moving or not when the throttle handle is moved. If it moves then its not the cable. You also just mentioned that you saw gas squirt in, and if that's the case then its not gas
  16. alldodge

    Volvo penta stalling help

    The biggest issue is your replacing parts and don't know what the issue is. Don't see an issue using AC Delco parts, if they were actually AC Delco. If you got them for ebay or Rock Auto maybe not (personal experience) It acts like a IAC issue but both are doing it the same. When boat is...
  17. alldodge

    Ran amazing then shake no thrust

    ok, deep breath ;) Lets start with the basics. Unless you have a helper, disconnect the throttle cable at the carb. Need to remove a 7/16 self locking nut and remove a carter pin hold the barrel nut and cable will slide off. Once off,hold the top choke plate open with one hand and open the...
  18. alldodge

    Ran amazing then shake no thrust

    No I'm not going to say it again, but Throttle moves and cable doesn't move at the motor. If this is the case then need to reconnect the cable at the motor
  19. alldodge

    Ran amazing then shake no thrust

    Bummer
  20. alldodge

    Ran amazing then shake no thrust

    We have a winner
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