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  1. M

    496 HO Failure

    It would also be a good idea to cut the oil filter open and inspect.
  2. M

    Preloading without the rolling dial torque wrench

    This means you either didn’t lube the bearings or bad bearings. This measurement is done with the u-joints and input shaft hanging straight down.
  3. M

    496 HO Failure

    What does the scan tool say for time in guardian? Here is what I would do If it wasn’t in guardian for much time. Put the boat back in the water and tie it down good. Run it at 1500 RPMs in gear and use the scanner to drop cylinder’s one at a time. If it’s bearing’s you will hear it better...
  4. M

    2011 4.3 Alpha MerCruiser winterizing question

    any reason to put antifreeze in it? ----- YES That should be it, right? ------- NO So I will open this one single handle deal and take out the 5 drain plugs. If I take the 2 front hoses off one on each side and pour some RV antifreeze I should be good to go? ------- NO suggest you read the...
  5. M

    Volvo Penta 2015 codes 697, 698, 699

    Yes, you need a new mechanic. Rinda Diacom is the scanner I would recommend. Input your serial number and Volvo will tell you what manuals are available for your engine. https://www.volvopenta.com/en-us/service-and-support/your-engine/manuals-and-handbooks/
  6. M

    Mercruiser 4.3 MPI 262 CID s#1A34694Z NOT IDLING CORRECTLY SOMETIMES

    yes, vapor lock or air entering the system. Suggest you follow the S.B. I linked step by step as written. It’s an old one but hasn’t been updated because it’s still completely valid. Only difference with your engine is the cooling system check valve. You should already have one, question is if...
  7. M

    Volvo Penta SX-M Gear Ratios?

    It was Commissioned in 2005 with a 1.60 There are two ways to be sure what you have. Disassemble and count the teeth or turn the input shaft and count the revolutions of the prop shaft. I would recommend that you go thru the upper and lower at the same time. Volvo has a much better gear lube...
  8. M

    Mercruiser 4.3 MPI 262 CID s#1A34694Z NOT IDLING CORRECTLY SOMETIMES

    I would have thought this engine would have a boost pump on it, but I don’t see any mention of one in the parts link you posted. Maybe got something stuck in the cooling system check valve? Maybe a distributor cap starting to fail, O.P. Mentioned spark plug replacement helped but didn’t say...
  9. M

    Mercruiser 4.3 MPI 262 CID s#1A34694Z NOT IDLING CORRECTLY SOMETIMES

    One of the problems with the coolfuel two is the only place air can get out of the system is through the injectors so once air starts getting in (thru a air leak or vapor lock) it’s hard to get it out without using the fuel pressure tester.
  10. M

    Mercruiser 4.3 MPI 262 CID s#1A34694Z NOT IDLING CORRECTLY SOMETIMES

    Vapor lock? You didn't post a valid serial number so I can't be sure exactly what engine you have. But it wouldn't hurt to look at the MCM 99-7 service bulletin Don S posted. Under certain conditions, engines may experience a `vapor lock' condition. The three most common complaints that vapor...
  11. M

    Preloading without the rolling dial torque wrench

    A few thoughts; No you can’t use a ”clicker” must be a beam or dial. Mechanics are taught to never use a torque wrench in the lower 10-20% of its range, depending on quality. Yes there is a difference between harbor freight and snap on. Always check the specs on precision tools you purchase...
  12. M

    5.7 EFI stalls when warm and shifting into gear

    Ok, MEFI 1 software. When you test those hoses, plug one and use the other for testing. Should be a constant flow of air. Plastic bag shouldn’t flutter. No published numbers on inner transom cable that I’m aware of. It’s more of a “feel” thing. That you still have a staked brass barrel tells...
  13. M

    5.7 EFI stalls when warm and shifting into gear

    Yes, the bolt holes say MEFI 2 case. Are you sure it’s a MEFI 1 program in it? Do you need to manually advance the throttle when you put it in service mode? The 0 IAC count kind of surprises me. But I’m one of those techs that didn’t work on many of the TBIs. When I did do diagnostic on them, a...
  14. M

    Boat not take off when everyone sitting in the back

    https://www.volvopenta.com/en-us/service-and-support/your-engine/manuals-and-handbooks/ This is the website that you can download a free owners manual. Please read the owners manual, pay attention to the section on loading your boat. Also read the section about static water line measurement. You...
  15. M

    Steering issue

    Yes this is rare, but I’ve seen a lot of stuff tie strapped to steering, throttle and shift cables. Never do that those 3 cables need to be able to move small amounts.
  16. M

    Steering issue

    Long shot, but the outer sheath of the steering cable must be free to move about 1” port and starboard where it connects to the rack. Have you tie wrapped anything to the cable or jammed a cooler or something else back by where the cable makes it’s bend to attach to the rack?
  17. M

    5.7 EFI stalls when warm and shifting into gear

    Hi, I haven't forgot you, but I've been very busy and don't have much time to devote to this. I've been looking for reasons why your engine is commanding zero counts to the IAC, (other then a vacuum leak) and have some questions. 1996 1/2 had a few changes and I need to narrow down what you...
  18. M

    5.7 EFI stalls when warm and shifting into gear

    Something to keep in mind with this system, there is a lot that the ECM doesn’t know. Fuel pressure is the biggest. With symptoms like you’re having with this engine, one of the first things to check is fuel pressure. Fuel pressure can and will only affect just at certain RPMs. Next is IAC...
  19. M

    FWC V8-300-C-A

    Once the antifreeze pressure reaches 15psi it will start spewing out around the cap. Cap is pressure sensitive. Or you’ll find a hose that wasn’t tightened up enough and it will blow off. None of this will be good and could be dangerous.
  20. M

    FWC V8-300-C-A

    If you do that, you should get antifreeze in the bilge. Antifreeze expands when heated. That’s why the reservoir is marked full hot and cold. Don’t fill it above the cold mark when engine is cold.
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