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  1. Scott06

    Mercruiser 5.0 Thunderbolt 5 ignition

    if the rev limiter hits at 3 k rpm on the tach the tachometer is not accurate
  2. Scott06

    what should I check for buying an old mecruiser boat

    condition of transom and stringers first, likely on a boat that old the wood structure is rotted. Compression should be 150 when new - this shows some wear on the engine. Watch what oil pressure is when engine is hot. You need 10psi per 1000 rpm of engine speed for it to be in good shape. Look...
  3. Scott06

    Gimbal bearing puller

    Thanks guys. I think that's what I will do axle bearing swivel plus some threaded rod and bar
  4. Scott06

    Gimbal bearing puller

    Ran into an issue pulling the gimbal bearing in my 2004 Alpha gen 2. Fresh water boat still has the original greaseable bearing in there, never had water in bellows... an hour with BF slide hammer didnt budge it... was thinking about getting this tool...
  5. Scott06

    5.0 oil weight and amount

    Then any filter for a small block Chevy will fit. They make a long and a short filter , either will work . Wix51061 or exquivalent
  6. Scott06

    Mercruiser 170hp 470 no spark

    Most likely you are looking at replacing the cable .when It wears and drags tripping the interrupt is a common symptom
  7. Scott06

    Mercruiser 170hp 470 no spark

    Not uncommon that a bad tach or wire with shirt to ground will kill the spark yes shift interrupt could also kill the spark but that would not be the tach wire . Disconnect wires at shift interrupt switch and test. shift interrupt is only to go from in gear to neutral, should never trip on land...
  8. Scott06

    New boat

    As others have mentioned you will need to do some maintenance. Certainly with that few hours the boat has mostly sat. With any 24 years old boat do not expect to not have to do any work. Given that it sat it is unlikely that they kept up much with PM.
  9. Scott06

    Shift cable

    We have all learned the hard way on aftermarket parts not worth the aggravation. My shift cable is 20 hrs old original bellows lasted 18 years and we’re still in decent shape… why bother messing around One of the few things I do buy aftermarket is u joints. The oem perma lube merc ones don’t...
  10. Scott06

    Shift cable

    The o rings on the driveshaft are to keep it tight in the gimbal bearing, nothing to do with water. Make sure the big quad ring is glued in the bellhousing. if its gear lube mixed with water it is from inout shaft seal On drive, if grease it’s from the gimbal bearing. Either way the water...
  11. Scott06

    5.7 coil issues

    Are you getting the correct coil -internal vs external resistor ? Had a similar issue on a can years back - would intermittently loose spark, and was destroying ignition components like cap rotor looked like arc welding was going on inside. Replaced the coil, couple month later coil was bad...
  12. Scott06

    Mercruiser exhaust question

    Would check the flame arrestor is on tight and the exhaust bellows are not torn or off. If i recall on the mpi there are three studs or shoulder bolts that hold on the flame arrestor and cover that are kind of a pain to get off ?
  13. Scott06

    2002 5,7 Mercruiser exhaust manifold keeps cracking - 5 times this summer

    Would definitely rule out the timing but usually if it is late the engine will run hot
  14. Scott06

    3.0l not accelerating/boggy

    You are correct it has timing gears. You can rotate crank back and forth and see if there is excessive backlash before cam start moving. Also you may want to make sure the balancer is tight and not making a noise.
  15. Scott06

    Very difficult to shift into Neutral

    you need to adjust it while running so figure out a way to get in there with a flex driver or smaller fingers... equally important while you adjust it is if you go way lean or way rich the engine should start stumbling at either extreme, if it doesnt carb is clogged and need rebuild
  16. Scott06

    Shift cable

    if you are having trouble getting reverse did you adjust the slotted lever I think around 2:50 in this video? \ if you have a factory manual it will be outlined in there.
  17. Scott06

    2006 Monterey Boat with a 4.3L Mercruiser TKS Engine S/N 0w354897 Mysterious Loss of Power

    Agreed to the OP if you can rig up fuel pressure gauge, take a timing light and spark gap tester. Go out stay close to the launch and when it happens make sure to see if fuel pressure is ok, check timing under load with timing light see if it is bouncing around. Check spark strength with gap...
  18. Scott06

    1993 Stingray 556 Leak in Bilge

    In the video you posted the three screws around the drain plug, remove them pull out the housing , reseal with 5200 put screws back In .
  19. Scott06

    2000 Glastron 175 engine swap

    I think you will find the victor jr intake rpm range not matched to marine rpm range which is idle to 5 k. What cam is in it?
  20. Scott06

    1994 Mercrusier 4.3l engine compatability

    Outdrive will self drain water. Change the gear oil in it. If you find evidence of water in gear oil pressure test the od to find seal leaks
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