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  1. Scott06

    Mercruiser 3.0 diagnosis / serial number decode

    Dont have a diagram for your boat you want to look and see if the yellow red wire on solenoid is getting 12 when key is in start. If it is not getting 12 v power to or from the key through the neutral safety switch in shifter is being interrupted . If you do get 12 v on it then slave solenoid is...
  2. Scott06

    Information - 3L Mercruiser

    Any boat or engine combo will be an issue if not maintained OBs have their issues too. There was an interesting thread on here about OBs vs IO, a marine mechanic pointed out the cost difference between extended warranties on OBs vs the same warranty on a new IO. oB warranty was quite a bit...
  3. Scott06

    Engine Bogging Down When Cold

    Good cap and rotor is all too common issue on these mpis , would keep a spare cap and rotor on hand as they dont seem to last long.
  4. Scott06

    Need advice

    The half metric half sae on same block was bizarre to me
  5. Scott06

    2008 Alpha one-gen. 2 Trim/tilt sensors

    Gotta buy a new sender assy
  6. Scott06

    Power Steering Leaking Into Water?

    Yes im agreeing with you no way ps goes into water. Just pointing out possible cause of really low ps fluid. This was 2-3 summers ago - My neighbor asked me to look at her boat 4.3 VP mpi as it was making a rattling noise at speed.… we are going along at speed i have my head in engine...
  7. Scott06

    2008 Alpha one-gen. 2 Trim/tilt sensors

    That is the trim sender , other side (port) is trim limit switch. Sender goes to gauge via engine and helm harnesses. sender just varies the resistance depending on position. Limit switch goes to trim pump, sets how high drive can go up in trim mode before you need to use trailer button to go...
  8. Scott06

    Power Steering Leaking Into Water?

    Yes of course but he said ps fluid was way low, likely has a couple things going on here
  9. Scott06

    Mercury 3.0 EST no spark

    As long as u are getting good pump shot no issue
  10. Scott06

    Need advice

    I think roller lifters was in late 1980s. Metric was maybe 2003-2007 or so? Dont get hung up on the metric. My boat original had a metric 4.3 090m casting… the metric threads were on the flywheel cover bolts, Side motor mounts and starter bolts. all other fasteners on front of block were SAE...
  11. Scott06

    Mercury 3.0 EST no spark

    Usually check balls go up and down stream of accelerator pump one may or may not be used in well of accelerator pump, on the discharge side of pump there is a ball in the passage feeding the accelerator pump shot to the venturi nozzles. There is a metal T staked into the passage to keep the ball...
  12. Scott06

    Mercury 3.0 EST no spark

    Lack of full advance would limit your rpm and power potential not backfire. you said it was running at 170-180 i think that should have a 140 f thermostat which engine should run 150 ish wondering if that is contributing to run on? Might richen up the idle mix screw maybe half a turn and see if...
  13. Scott06

    95 Mercruiser 4.3 water in oil

    Doghouse is engine cover cowling slang It could if enough was present My dad pulled my boat one fall due to low water levels , covered it in the yard but left plug in , wasn’t much water in bilge but evrything under the boat cover had a layer of condensate on it two weeks later when I...
  14. Scott06

    95 Mercruiser 4.3 water in oil

    When I janked the cracked block from PO on my boat the oil was so milky it wouldn’t drain … it was a PITA to scrub out of the hill as he blew it out the valve covers … very different from what’s seen here and there is rust in intake passages
  15. Scott06

    95 Mercruiser 4.3 water in oil

    Looks to me like water ran down the intake and filled the cylinders Oil side of engine looks clean normally when water is in the oil and it’s run you get a creamy milkshake on oil side not what you see here can only think water got in doghouse or if shrink wrapped you had condensation inside...
  16. Scott06

    Unusual oil consumption? VP GM V8 Vortec 5.7

    What do spark plugs look like wondering if I take gasket isn’t on correctly and sucking oil into intake port via lifter valley ?
  17. Scott06

    Power Steering Leaking Into Water?

    My neighbor had an issue with ps fluid loss on their VP 4.3 hose clamps on return line from ps cooler were loose emptied the ps reservoir into the bilge
  18. Scott06

    Unusual oil consumption? VP GM V8 Vortec 5.7

    When u say brand new was it a new gm base engine or remanufactured ? Was the engine to properly broken in by varying the rpms for First ten hours of use ? This is done to seat the rings Michigan motorz recommended I use rotella conventional oil for break in and not use synthetic until the...
  19. Scott06

    Intake resonator for 6.2 MPI

    I believe you have the older GM sbc based 6.2 vs the newer (2015?) mercruiser made 6.2 . So no the parts for the newer non gm 6.2 will nit fit
  20. Scott06

    Hydraulic Lifter Volvo Penta 4.3 Vortec

    You don’t need to pull the head to change the lifters would also look at rocker studs valve spring etc on to make sure nothing is out of place that could leave room that lifter can’t adjust out of ….
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