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    aq140a dies after 300ft under load ???

    So I have been helping a friend on his boat it is a 77 Bayliner liberty with a aq140a and a 280 leg. Our problem is that it starts and idles fine runs strong then dies after 300 yards under load. Then after about five or so minutes it will start fine and die again. We have rebuilt the carbs, set...
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    aq170a ign timing question

    So I have had a problem with my motor aq170a. when warm Not going over 3000 rpm, so I decided to sync carbs and check the timing. So I hooked up the timing light and it read 15 deg at idle and 30 at 2000 rpm what the book says right. When I sync my carbs I use a uni-sync and a Mac engine...
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    W.O.T. question??

    So read a lot on here and have been noticing people talk about their max rpm or W.O.T. I have a 75 Glastron with a aq170a and a 270 out drive and now have it running pretty good but when I?m out I don?t run it over 3,000 rpm should I run it at W.O.T.? my thinking is fuel economy and longevity...
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    exhaust bellows fell off !!!

    My exhaust bellows fell off and the rib that the hose clamp tightens on is corroded away what do I do ? Can I still use it with out the exhaust bellows on there? It is a aq170a with a 270 outdrive? Was going fishing in the morning now I don?t know? I heard that it?s purpose is to keep exhaust...
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    aq170 w/ 3 solex carb question??

    My problem is when my boat is in gear at about 3000 rpm?s after a couple of minutes I can feel a lost of power then it will pop through carb. I can let it idle for a min or so then give it more throttle and it will do the same again after a couple min. When have it at 2300 rpm?s then It will...
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    aq170a cooling idea input needed

    So I?m thinking of putting in a way to flush my aq170a motor without using ear muff?s as it is in the ocean only. on the inlet tube I was going to put a ball valve with a tee and a hose fitting so I can just hook up a hose to the motor turn the ball valve closed so water doesn?t go out the...
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    outdrive 270 prop question

    Well I just tested my new old boat it is a Glastron 1975 18? swinger with a aq170a and a 270 outdrive ran grate but at around 2000 rpm it has a shake which I think is from a broke and bent tip on one of the propeller blades? I know it is a 14? clockwise turning (when going forward ) prop but...
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    volvo aq170a timing question PLEASE

    i got my grandfather boat back from the guy who bought it years ago. i got it running and now trying to fine tune was going to set timeing it looks like it has a vac advance but not vac hose anyware? can't find a plug on the intake anyware for a vac port? is this the wrong dist? i looks newer it...
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    Link & Sync Questions??

    When I Do A Link And Sync To What My Manual Says I Don't Get Full Throttle ? It Tells Me To Crank The Motor With The Elec. Starter And Advance The Throttle Controls Until The Timing Mark Passes The Top Dead Center Mark. At That Time The Linkage Should Just Be Touching The Carbs. When I Do This...
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    500 fuel problems

    so i start my boat and take off. it goes fine for about 15 seconds then it boggs down. i put it in nutreul and rev it, then it does the same. i think it is starving for fuel. i have changed the fuel pump and rebuilt the carbs and checked the float levels at least 3 times. any sugestions would help
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    timing mark on 67 merc 500 thunderbolt?

    where is the timing mark on my 67 merc 500 sn # 2167927? i see two. one has a white dot on the top of flywheel with a slit on the edge of the flywheel, the other is just a little slit mark on the edge of flywheel. i think that the one with a white dot is for timing belt? and does anyone have any...
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    thunderbolt switch box wiring? brown wire?

    i'm ordering a cdi 114-2986 kit for my 67 merc 500. and was wondering what the brown wire on the starboard side of the box (side if 4 terminals)does? i also had a question on step 7 on http://www.stemtostern.com/content/rainboat/CDI/114-2986.pdf 7. Reconnect the Brown wire to one of the...
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    is it worth buying? CDI Aftermarket switchbox and coil kit

    i was looking at oldmercs online catalog and found a aftermarket switchbox and coil kit made by CDI. i just recently fryed my switch box and coil tested bad also. i was thinking about buying this kit. my motor is a 67 merc 500 thunderbolt ign. sr#2167927. you cant buy a n.o.s. one for under...
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    67 thunderbolt 500 (help!!)no spark

    so i was trouble shooting my carb and did a very stupid thing and and grounded the power wire on the ignition box that has two wire going up under the flywheel. i now how dumb it is working on a motor with the ground still connected but i had a brain fart. now the motor has no spark. please help...
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    cooling system merc 500 50hp

    hello this is my first post on here. i just got a 67 mercury 500 50hp outboard motor the serial number is 2167927 thunderbolt ignition. when i put it in the water i noticed that there wasn't water coming out of pee hole so i shut it off and took lower unit off and ordered a new water pump.(still...
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