Search results

  1. Scott06

    Mercruiser 5.0 carb?

    It wont advance in base mode. Do not put it in base mode just check the advance, just want to see if you are getting advance or not should be close to 30 all in
  2. Scott06

    Old 488 replacement idea

    3.0 is most drop in but will give up some power5 hp. 4.3 is more work potentially but makes similar or more power than a 488. what size boat is it in?
  3. Scott06

    Mercruiser 5.0 carb?

    Was looking for the total advance on the ignition. Wondering if module is not advancing. You should have a total advance of around 28-30 degrees by 3 k or so rpm. 10 degrees is correct for a vortec 5.0. yours is a 220 hp engine if you have a 1.62 drive the 19” should work fine If engine is in...
  4. Scott06

    Mercruiser 5.0 carb?

    You say factory prop- what pitch is it and what gear ratio do you have in the prop. What is the total amount of ignition advance you have and what do the spark plugs look like ? Would also think you are heading for a carb rebuild but would verify what prop is on it as it may have to much...
  5. Scott06

    Water pouring from harmonic balancer area on muffs

    No reason we can't have fun here...
  6. Scott06

    No spark issue

    You see a fair number of comments on Pertronix failing. Never had any first hand experience but might be worth a internet search. I see this a lot on the classic car forums I'm on. Delco EST is tried and true OEM quality system
  7. Scott06

    Pre-Alpha drive won't go into reverse.

    This above when you split the halves to do the impeller east to misalign the shift shaft that is cotter pinned in the upper with the splines shaft in lower. Upper shift shaft needs to be straight ahead and lower shaft needs to be I think turn all the way clockwise to be in fwd
  8. Scott06

    2005 Bayliner 175 Mercury 3.0 Mercruiser i/o - Stalling

    I mixture screw not idle speed screw. Idle mix screw is on throttle plate turning it in allows less fuel at idle turning it out allows more fuel at idle. The idle speed screw you reference is the stop that the throttle seats against this determines how far the throttle plates are open at idle...
  9. Scott06

    2005 Bayliner 175 Mercury 3.0 Mercruiser i/o - Stalling

    How did u set the idle mix screw? When you stab the gas are u getting a good stream of accelerator pump shot ? What did contents of fuel filter look like Did u set the ignition timing
  10. Scott06

    Water pouring from harmonic balancer area on muffs

    The 488/3.7 engines were a redhead step child . A lot of mechanical shortcomings in the design. If the boat is worth the effort swap in a3.0 or 4.3
  11. Scott06

    Propless?

    X2 on the 19” as a good starting point. Might be better to rough in wot rpm with less expensive black max props
  12. Scott06

    Mercruiser Shifting Issues

    See attachment from factory manual I found it best to pull the inner core out, then push a weedwacker wire up the cable to the shift plate and tie it off, pull the cable outer sheath out through bellhousing. Use the weedwacker wire to guide the new outer cable up and around the exhaust and...
  13. Scott06

    1988 350 Stumble Problem

    When it happens check spark strength with a spark gap tester to rule it out. I suspect you have a fuel delivery or carb issue. Prob a good carb cleaning will help, but would verify fuel pressure while its acting up
  14. Scott06

    Electrolysis not a bad thing

    Would suspect the algee growth change is from something else as if stray electricity kept it at bay no one in marinas, which are known for stay current, would need bottom paint.
  15. Scott06

    Lumpy idle after carb rebuild | Holley 2300 | Volvo Penta 3.0 GS

    There may be a vacuum fitting plugged on manifold There is vacuum supplied through a small tube for the choke pull off Prob can put your gauge on there and just force the choke open Can also just tune it by ear or rpm when you go way lean and way rich it will stumble In Between these two...
  16. Scott06

    STUCK gimbal bearing.....

    Does it by chance have an older gimbal housing that A 2x4 across bellhousing will work as well
  17. Scott06

    Replaced Bellows now gears won't engage fully?

    is this in gear or neutral - thinking gimbal bearing, ujoints or propeller
  18. Scott06

    HELP I can't get my motor realigned

    That would be a good sanity check . Also seen folks us a 1" pipe or dowel which wont be tight in the coupler but allows you to insert it and look in with a flash light to see which way it needs to move. Be interested to see if the tool is wrong as that would be easiest solution. Would also...
  19. Scott06

    Help a little old lady with her little old mercruiser 120 wiring?

    I only have a gen 2 trim wiring diagram but it looks like there is a 20 fuse in the red between where it takes power off the solenoids and supplies it to the trim/trailer switches at helm and trim limit switch. Weather it was there originally or someone added a newer fuse holder to replace an...
  20. Scott06

    4.3 GXI SXA no water coming from seawater pump

    so if you have zero issues in three hours why did you insert clear hoses ?
Top