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  1. Scott06

    Mercruiser 470 oil pump

    it should i have also done it by running it on the starter with the plugs out.
  2. Scott06

    Mercruiser dies after getting on temp

    when it dies are you missing spark or gas ? if you dump a little gas down carb can you keep it running ? do you loose spark - put timing light on coil wire see if its dropping off. On a points system there will be two paths supplying power to + side of coil- one is typically supplied off...
  3. Scott06

    Mercruiser 470 oil pump

    I would not put sealant that could get squeezed into the oil passages and potentially block flow ...
  4. Scott06

    Mercruiser dies after getting on temp

    you can ohm test the coil to see if it is off spec attched is a snip from specs on an aftermarket coil for your engine Would assume yours should be close. Also agree servicing the points and condenser is warranted, verify you have about 9 v to positive side of coil when key is in run as...
  5. Scott06

    Problems starting after fuel filter/water separator change

    if you take a rag and push the schrader in with a small screw driver - you can quickly see if there is air there or not. if its fuel or not under pressure no need to rig up a way to vent it.
  6. Scott06

    I have to do a gimbal bearing and bellows etc, I have a question regarding the shift cable. Merc A1 G1 3.0

    Clicked the wrong one, didn’t think it was a hanging offense …sorry
  7. Scott06

    I have to do a gimbal bearing and bellows etc, I have a question regarding the shift cable. Merc A1 G1 3.0

    I didn’t have to cut my cable , just took the end off the shift plate end pulled inner completely out the bellhousing with weed walker line attached. Then I could pull the outer casing off with the bellhousing. Was doing bellows at the time so bellhousing Was coming off. yes you could use...
  8. Scott06

    Throttle movement but no increase in engine rpms

    16" is the diameter limit for alphas
  9. Scott06

    Throttle movement but no increase in engine rpms

    the revolution 4 xp is available in some 1/2" pitch increments , I believe also the ventera has some 1/2" increments . These are also getting to not be everyday props, I think out of their racing line
  10. Scott06

    I have to do a gimbal bearing and bellows etc, I have a question regarding the shift cable. Merc A1 G1 3.0

    you have to remove the cable to get the outer sheath off anyways. it gets removed out the bellhousing end. I usually tie a weedwacker wire to it to fish in the new outer sheath. All this is outlined in the manual
  11. Scott06

    Throttle movement but no increase in engine rpms

    Either damaged or the aluminum prop didn’t have as much cup or bite I have found that the aluminum 4 blades do not have the grip that a good SS 4 blade does. I get just about the same WOT RPM with a 23" Spitfire Al 4 blade as I do a 21" Revolution 4 , lots of slip with the two 4 blade AL props...
  12. Scott06

    Alpha Gen 2 Stalls Going to Neutral (Shift Cable Replaced)

    would also pull the drive to make sure the shift swivel shaft and linakge in bellhousing is not corroded or packed with debris causing extra drag. I ran into this after i replace the bushing on the shaft in the bellhousing bushing wasn't seated fully causing some drag on the arm. extra drag...
  13. Scott06

    Throttle movement but no increase in engine rpms

    4300 is still low for that engine should be 4800 -5k at WOT. If you go in shallow water lift the drive up would think you can swap props in the water , done it many times. or do you have an extended swim deck covering the drive ? Just gotta be careful the thrust washer doesnt stick to the prop...
  14. Scott06

    2005 Mercruiser MPI 5.0L misfiring(?) when in gear, idles fine

    yeah why use the spark gap tester he already owns when you can become the path to ground.
  15. Scott06

    2005 Mercruiser MPI 5.0L misfiring(?) when in gear, idles fine

    Look for signs of arching in the cap, also if you get spark into the cap and not out of cap to plugs or wires. Just the gap tester you have- should jump consistently 3/8" 9nice blue spark not orange) or so. Testo it off the coil wire , then you should get the same size gap jump off the plug...
  16. Scott06

    WOT RPM Low. MAG350 MPI B3

    this thread has the indexing of dist https://forums.iboats.com/threads/mercruiser-5-0-mpi-distributor-issue.690321/
  17. Scott06

    WOT RPM Low. MAG350 MPI B3

    Couple of things I would look at - first yes of course it could be the linkage make sure it is opening all the way Verify firing order and the the indexing of the distributor. There is a procedure that Mercuiser has for this if you google it or find it in the manual. Compression test could be...
  18. Scott06

    Throttle movement but no increase in engine rpms

    Did it ever run at a proper WOT RPM or did this happen concurrent with the prop swap ? In addition to the compression check would verify you are getting full spark advance
  19. Scott06

    2005 Mercruiser MPI 5.0L misfiring(?) when in gear, idles fine

    Agreed probably the button in top of cap is not making contact with rotor. either that or cap is cracked and leaking spark to ground. so unless the dist is not longer turning would think cap and rotor need looking into
  20. Scott06

    1972 Mercruiser 165.

    Yes
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