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  1. craig newton

    spark plug question

    1996 mercruiser 4.3lx 6cyl 4bbl Was told running a different spark plug (not as hot) may help with a deisleing problem I am having The manual calls for a AC-45MRT plug. The replacements have a longer shaft and I'm concerned about them making contact with the piston. Is that possible?
  2. craig newton

    Can't slide the remote into forward gear.

    1996 Sterndrive 4.3lx 6cyl. 4 barrel carb with Thunderbolt ignition. Alpha one Gen two. Had this out a few weeks ago and it shifted and ran fine but was dieseling when I shut it off. I set the timing, idle and changed plugs. Next I was told to change the impeller. I had the two bolts above the...
  3. craig newton

    Engine dieseling

    1996 Sterndrive 4.3lx 6cyl. 4 barrel carb with Thunderbolt ignition. At idle, wot and everywhere in between it runs fine. The problem I am having with it only occurs when I turn it off. With the key in the off position, it keeps trying to run. Not in a smooth way, the engine kind of coughs...
  4. craig newton

    Stuck again

    96 Mercruiser 4.3LX 6cyl 262cid 4bbl alpha one gen two A week ago I came on asking for help removing a stuck outdrive. You all got me through that but it came out with the gimbal bearing seized to the drive shaft so bad a hammer didn't budge it. A couple days of cutting, grinding, heating...
  5. craig newton

    outdrive stuck

    96 Mercruiser 4.3LX 6cyl 262cid 4bbl alpha one gen two last month I removed the lower unit only to replace impeller. working alone I had trouble re-installing the unit. was advised to remove upper unit, connect the two then re-install. using a floor jack, I was able to do that and was...
  6. craig newton

    How do you pin point the source of a loud vibration

    96 Mercruiser 4.3lx 6cyl vortec with alpha one gen two outdrive. I took the outdrive off and installed a new water pump kit. Who ever did it last broke two of the four housing bolts off and left it like that. I drilled them out and mounted the new housing with 4 new bolts. Didn't see any other...
  7. craig newton

    Trouble re-mounting lower unit

    I have a 96 Mercruiser 4.3LX Vortec 4BB Alpha one Gen two. I dropped the lower unit and installed a new water pump kit. I've done this a number of times with a gen one and never had any real trouble doing it without help. This is my first gen two. I put it in forward when I dropped it and made...
  8. craig newton

    4.3 LX wiring diagram

    I have a 1996 Mercruiser 4.3 LX 4bbl Alpha 1 Gen 1. Trying to find a complete wiring diagram that includes the gauges and engine.
  9. craig newton

    What happened now?

    96 Mercruiser 4.3 L 4bb V-6 Vortec with Alpha One outdrive. Put in new plugs, plug wires, dist. cap and rotor. It backfired once starting it but then started and went to a smooth idle. Sounded good. I let it run for 4-5 minutes to loosen up the oil to make it easier to extract through the dip...
  10. craig newton

    Trim troubles

    96 Mercruiser 4.3 L 4bb V-6 Vortec with Alpha One outdrive. The up and down trim switch didn't work at all. Tried jumping solinoids and didn't even get a clicking sound. So I replaced the positive wire from the battery and the big fuse on the end of it. Then I replaced both solinoids, made sure...
  11. craig newton

    Flames up when starting

    96 Mercruiser 4.3 L 4bb V-6 Vortec with Alpha One outdrive. Boat hadn't been used for about a year. Stored without gas. So two days ago I filled the tank, bought a new battery and it started up. Went to idle for a few minutes with the ears on and I shut it down. Today I cranked it over for about...
  12. craig newton

    Stuck in forward?

    Have a 2004 Mercury 50hp 4 stroke EFI. Dropped the LU changed out impeller including base. Thought I had it in forward when putting it back together. Once together it stayed in forward regardless of where the remote was. Wouldn't hit nuetral or reverse. Dropped it again and put it on a stand...
  13. craig newton

    Problem removing Water Pump base on 50hp outboard

    Have a 2004 Mercury 50hp 4 stroke EFI. Decided to change the bottom plate as well as the water pump base this year with my routine impeller change. I inserted a screwdriver in each recessed spot at the top of the base and started to pry. I believe it has been in there since day one because it...
  14. craig newton

    Shifting problems

    2004 50hp Mercury 4cyl 4stroke EFI on a 17' Alumaweld. I have a side mounted control box. Shifting has never been as smooth as I would like it to be even after I had a shop adjust the cables. According to my manual the adjustment didn't align the cables correctly but I assumed they knew what...
  15. craig newton

    Water in the Oil +

    84 Mercruiser 5.7l sterndrive, 4bbl, open cooling system. Last time out it back fired a couple times starting it and seemed normal running just above idle through the no wake zone. Once through I accelerated but didn't have enough power to plane out. Wouldn't go above 15mph. The oil dipstick...
  16. craig newton

    2004 Mercury 4 stroke, 50 hp, EFI won't accelerate.

    Motor starts up and idles fine. Put it in gear at idle and it takes off at about 2mph like it always has. No issues until I attempt to accelerate. Then it acts like it wants to go for maybe one second before it starts to bog down and eventually die unless I bring the throttle back to an idle. A...
  17. craig newton

    Need help identifying engine

    1984 Mercruiser 5.7L 260HP 350CI Sterndrive Alpha One Gen One. The only tag I've found is from a Quicksilver re-power several years ago. Makes it difficult ordering parts. I brushed off some coorosion today and found the block is stamped between the intake manifold and the fly wheel housing with...
  18. craig newton

    Starter starts something spinning in the back of engine only, nothing in the front.

    84 Mercruiser 5.7L, 260 sterndrive, alpha one gen one. Last time out was beginning of March with no issues, ran fine. Expecting the grandkids in a few weeks so I filled up a large tote with water today, lowered the out-drive and went to start it to be sure it was still running fine. The starter...
  19. craig newton

    Swapped Thunderbolt IV for Delco EST

    I replaced my thunderbolt IV ignition system with a Delco EST due to a lack of spark. With the tach and the shift interrupter switch disconnected for the first start up attempt it showed the no spark problem was fixed as there were bursts of flames shooting out of my Rochester 4 barrel carb...
  20. craig newton

    Did my new coil die after one hour use.

    I have a 1984 Mercruiser 5.7L stern drive. My distributor cap contacts were green and corroded. Rotor contact looked just as bad and was seized to the shaft which was rusted. I had to cut it off. Before installing a new one, I emery clothed all the rust off the shaft. The nuts on the pos. and...
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