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  1. Scott06

    What Is The Fuel Pressure Specs For 350;Mag MPI At The Rail?

    you can always use an outboard tank or put the fuel line in a gas can temporarily to test. Last weekend I was trying to take the antisiphon valve off my friend boat and it snapped off... when we rigged up an OB tank that bypassed it it still ran the same chitty way so I broke the valve for...
  2. Scott06

    aluminum prop comparison

    if you have more slip quite possible you have some wear on the prop maybe some burn marks on it doesnt cost much to run a AL prop through a rebuilder. if one is not local try Prop MD in minnesota, I have done mine via mail order. Send it in after end of season
  3. Scott06

    Hesitation on 351W

    I think either a 600 or 750 will work on a stock engine that size. When I bought my partial engine from michigan motorz in 2016 they were using 600 cfm edlebrocks (1409) for the 5.7 L engines, while Mercruiser will use a 750 webber/edlebrock on their 357 reman engines... Since you already have...
  4. Scott06

    Hesitation on 351W

    All carbs will have some type of enrichment system that kicks in as you get to WOT. Usually runs off vacuum that drops as throttle opens. on an edlebrock there is a step up rod that goes down in the primary jets that restricts the fuel at part throttle and cruise, at full throttle lower...
  5. Scott06

    Hesitation on 351W

    Doubt you are running out of fuel supply -what do the plugs look like and are you sure your ignition is not missing or hitting a rev limiter? You may need to put in fatter secondary jets or try richer step up rods on the primary. the carb book from edlebrock is available on line has calibration...
  6. Scott06

    Knocking when turning

    more so than that I have seen lack of pertinent info in repair manuals, that coupled with more complex mechanicals drives some issues
  7. Scott06

    Knocking when turning

    Obviously the OP is missing something, that is a good list of little chit that can turn a 10 min job into a curse fest, especially the shift linkage being bent and grease in coupler- speaking from personal experience on those...
  8. Scott06

    Popped through the intake.

    125 is good enough to run, and very even. seen much worse variation run just fine. As long as the plug seals the length of reach wont matter -Dont over think it
  9. Scott06

    4.3 diesling

    I've used it within the last 10 years so the technology still works... Decarbonizing definitely helped on my 3.0, I did this with seafoam (Water, seafoam, or GM top engine cleaner all work well), I also fattened up my idle mix a bit. is your engine running cool as if it is hot sure to impeller...
  10. Scott06

    Fuel tank suction tube removal

    Funny you say very fine hair, when i emptied the filter into a container you could see something that looked like texture in the gas moving around, almost like layers of gel. Then when it sat after five minutes it was milky… I ran it on a remote tank yesterday with same bogging, so assume carb...
  11. Scott06

    SX-A Gear Oil Screw

    Obviously hadn’t been changed in a while what did it look like ? The old lube
  12. Scott06

    Fuel tank suction tube removal

    Helping a good friend boat is a 2002 Glastron 185, VP 4.3 carbed (2 bbl holley) SX drive. he has owned this boat 15 years very few problems. four or so seasons ago was having surging miss at speed when on plane, so I rebuilt the carb got two perfect running seasons out of it. There were no...
  13. Scott06

    Running temp for 3.0 tks mercruiser suntracker 27 ft pontoon?

    Yep just fine exactly what my merc with a 160 stat runs at, even in cooler water. I don’t think the alarm for overheat trips until 200 or 205.
  14. Scott06

    Knocking when turning

    I wonder if the driveshaft , u joints and inout shaft snout of the drive are getting hung up in bellhousing.might try a different angle to the drive are/ bellhousing raise or lower trailer front ?
  15. Scott06

    Manifold/riser 3.0 mercruiser

    That’s smart to do before getting in too deep. the compression numbers are perfect on two and serviceable on two, so probabky would run. If manifold is freeze cracked was it not winterized ? on a good note if it’s completely roached, you can probably find a good used take out 3.0 for...
  16. Scott06

    I have a leak.

    No if the studs were changed out and were longer and nuts bottomed out but changing a ss for a steel one isnt going to make a chit of a difference
  17. Scott06

    I have a leak.

    might retighten the transom housing bolts as a sanity check and exhaust pipe. Maybe something simple like shift bellows.
  18. Scott06

    Manifold/riser 3.0 mercruiser

    it would leak back through the valves and past the rings, but wouldnt think you would see that until after shutdown. Thera re could have been residual water as usually it takes a couple of changes to get rid of the milk. I would pressure test the cooling system with out the manifold or block...
  19. Scott06

    Knocking when turning

    Only other thing I could think is the orings on driveshaft are getting hub=ng up on gimbal bearing or not greased well. I had a hell of a time one time when I forgot to grease the orings. Also when turning the prop was it locked in gear CCW? otherwise it will pop out of gear and you think you...
  20. Scott06

    I have a leak.

    boat with engine is probably deeper in the water as well. You will need a scope camera to see wtf it is.
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