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    She just won't start easy nor stay running 4.3l

    Its just setting initial timing. Its not going to be perfect but should get it running if everything else is working. What I did in a nut shell. Rotate the engine to TDC on the Compression Stroke of the #1 cylinder. Both valves should be closed. Install the Degree Wheel on the crankshaft...
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    She just won't start easy nor stay running 4.3l

    Don't assume anything when troubleshooting. Set that timing again. I'd also change the plugs instead of just cleaning its cheap. I've had the same issue before. I'd admit I didn't check timing before hand but it was running. Went out one day and started at the launch then died and could not get...
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    Leak from transome

    Pull the leg again. Best case maybe the bellows just wasn't put on good. My lower exhaust one was always a pain to put back on.
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    Boat struggles when Warm

    Check oil. When my manifold started leaking it ran fine all day trolling. When we came to back to the dock and brought it back down to idle for the first time all day it died. Got it to start back up at the wash down but it was rough.
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    4.3gi no start new ICM. how to set base timing?

    Cracks, rust. I locked up #6 because of leaking manifold. Tried to stretch them one more season and that was a bad idea. Luckily got it un-stuck and running just fine.
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    4.3gi no start new ICM. how to set base timing?

    Whens the last time you check the exhaust manifolds and elbows.
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    1990 OMC 4.3l Cobra ASKING FOR ADVICE

    If you can't sell it whole. The accessories should sell pretty easily if priced good. Damn things cost an arm and a leg new.
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    Remove One Exhaust Bolt - Need to redo all bolts with new gasket?

    No need I've removed one bolt before and put back no leaks.
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    Power Steering Cooler Replacement - Access

    No the 2 black ones under it. Could just be my eye balls.
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    Power Steering Cooler Replacement - Access

    Hard to see but isn't that the steering lines going up and over the block? If not I'd take off the manifold off.
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    I need help, boat runs rough and stalls. I pumped new gas and lots more.. I need help

    Can you take a pic of the notch on the pulley and the timing gauge lined up? This is jumping around so much I'm not sure steps are going in order.
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    I need help, boat runs rough and stalls. I pumped new gas and lots more.. I need help

    I think still jumping in deeper than you need to right now. I saw you pumped new gas but did you run it on a portable tank? Also might of missed this but are you sure you got the motor at TDC before even starting the timing procedure?
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    I need help, boat runs rough and stalls. I pumped new gas and lots more.. I need help

    Tach doesn't always go to 0 when turning motor off. My 4.3L never did. If you are getting RPM readings I don't think its the wire shorted.
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    VP 8.1 GX-i running like crap

    I like to use my test light so I don't get zapped.
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    VP 8.1 GX-i running like crap

    Air fuel spark Really hard for us to help over the internet without much information honestly.
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    I need help, boat runs rough and stalls. I pumped new gas and lots more.. I need help

    Jumping in late. You sure you didn't forget to tighten down the bolt for the distributor? Timing shouldn't really change just sitting there.
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    VP 8.1 GX-i running like crap

    What did they do to make it run last time? I'd start there.
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    Moving outdrive with engine off?

    My 290 couldn't. Was hard enough using the wheel with the engine off.
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    AQ280 y pipe fitment

    Project boat fun. I'd also redo the stringers.
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    Stern Drive Mystery

    Just start with the easy stuff. Hook up a couple gallon tank with fresh gas.
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