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    Volvo penta AQ 125 A timing

    Hey guys AQ 125 A backfires out carb at 2800 rpm just as I'm trying to plane. I can push past it but will backfire 6-7 times then smooth out and run good on plane. Will do this everytime I throttle up. I checked with a timing light and I'm at 11 degrees btdc at 1000 rpm idle in my lane way. I'm...
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    Mercruiser 5.0 Thunderbolt I'v dist sensor wiring

    Hello I have a mercruiser 5.0 350 cid and just replaced thuderbolt iv sensor in distributer. Old sensor had 2 posts one red/white and other had two green/white ( one going to shift switch) and the others going to ignition amp on riser . Also amp ground wire connected to bottom of dist on sensor...
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    85 hp evenrude v4 not idling less than 2000 rpm.

    1980 85 hp evenrude v4 not idling less than 2000 rpm. The carbs are non adjustable and have had rebuild kits put on. Timing was set at 4 btdc but pretty much useless until rpms are down. I can't set it the advance way as under load in water it just backfires and misses a lot when I throttle. I...
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    Volvo penta AQ 125 A backfiring and plugs fouling

    I have a 1982 AQ 125 A . engine has ran great for the last 5 days morning and night ( fishing derby) one morning after pulling rods and just as I hit 3000 rpm it backfires every 5 secs . I throttle down and it runs fine up to 2000 rpm so I limped it home pulled plugs and cyl 4 is black sooty...
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    4.3 l v6 mercruser head bolt torque specs

    Hey guys I have I believe is a 1989 4.3 litre v6 GM block and can't find head bolt specs anywhere for the engine. The only engine number I found.......oD489396..... On plastic cover on carb engine model is MCM 4.3 litre and displacement is 262 can anyone help me out with head bolt and intake...
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    Another Volvo penta aq125a problem

    Hey guys I will give you a little history about the problem and what IV done to try to fix my aq125a. Engine will not get above 2100 rpm under load ,it stalls out and I can't even feather it higher I hear the carb open up sucking air loud. I can rev it up to 3500 no problem in water in neutral...
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    Volvo penta AQ125 spark plug type

    Hey guys I have a AQ 125 not sure A or B and bought new spark plugs for it . Plugs that are in it are NGK R BR8ES and the ones I was sold are NGK R BPR6ES are these ok to use threads look same length the engine is on a 1982 bayliner capri
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    aq 170/270 same ratio as a aq125/270?

    i have a aq 125/270 and i need parts for the upper gear drive. i bought a aq170 ( 6 cyl) with a 270 outdrive and wondering if the ratio is the same?
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    volvo penta early 80's ad170/270 u-joint stuck

    bought a scrap boat for parts. ripped engine and outdrive out. lots of good clean oil in outdrive. took lower unit off with no probs. trying to take upper drive off but the ujoint is seized onto drive shaft in bell housing. tryed prying it out ( only need parts inside gear housing) so damage to...
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