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  1. C

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

    2004 Mercury 50hp 4stroke EFI 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...
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    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...
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    Starting problem. Something just spinning

    I thank you all. A quick visual of the starter area and all the rust and gunk that had accumulated reminded me of something I probably should have mentioned. My cover ripped during the last heavy rains while I was out of town. The starter was underwater for a few days.
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    Starting problem. Something just spinning

    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...
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    Replaced Thunderbolt IV ignition system with 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...
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    No spark produced by new coil

    Thank you Jack. I printed this and will get back to you with my results. I'm not a mechanic but I think I can do this. I was trying to test today for voltagae to and from the coil and don't know if what I came up with is normal or not. I will try to post a picture.
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    No spark produced by new coil

    Have an 84 Mercruiser 5.7L 260 sterndrive. It was running rough I pulled the distributor cap and found the contacts covered with green corosion, the rotor contact was black and rusted to the shaft. Had to cut it off. The connections on the coil were also badly coroded. So I replaced the cap...
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    Acts like it's slipping out of gear when accelerating

    Have a 1984 Mercruiser 5.7L with Alpha one gen one. I accelerate slowly, nothing quick and get up on plane without issues. Once there, if I continue accelerating it acts like it goes into neutral. Rpm's instantly increase as boat speed instantly decreases. The prop is still spinning but much...
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    Gas spewing from plug holes during compression test.

    I replaced the carburetor on my Mercruiser 5.7L 350 engine solely because the throttle linkage was getting still and it stuck a few times. It ran fine, just a bit sticky. In hindsight that was a pretty trivial thing to complain about. So I purchased this new, re-built, beautiful Rochester...
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    Engine swapping compatibility?

    I currently have a Mercruiser 5.7L 250hp sterndrive with alpha one gen one outdrive. Started running very bad. Two plugs were black and dripping oil. One cyl at 30psi, three at 90psi and the others at 125psi. I'd like to down size the motor with out having to replace the out drive if that's...
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    Should Carb. settings be the same for a 350 and 350 Magnum engine?

    I have a 1984 Mercruiser 5.7L 260hp V8. The Rochester quadrajet (17090210) that had run for years on it finally needed replacing. I purchased a re-build that was advertised as being a replacement that was built and calibrated for the Rochester Quad 17090210. Felt great, then I noticed seller...
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    Help with a too high Idle.

    Have a 84 Mercruiser 5.7L with a large Rochester 4bb. Easy to start and keep running as long as the RPM's are around 2,000 while warming up and around 1,500-1,250. I would like to get\ my idle down enough to safely drop in gear before the tuna arrive. 1. Throughout the Rpm range above it runs...
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    Chrysler outboard information request

    I would appreciate any information at all regarding this outboard. The engine cover says Chrysler. The metal stamp says the following: Mongomery Ward / Mod. vwb 52122 / Ser. 58x 2315 / 15 bhp at 5000rpm / Full Power range 4600rpm - 5600rpm / bia certified I would like an owners manual but don't...
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