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    Low voltage to fuel pump relay

    Volvo Penta 5.7 GSi PWTR Hi everyone. Having intermittent issues with the fuel pump. New fuel pump, filters, pick up, anti syphon, relay, and fuel line. I’m getting 12v on the battery wire at the relay (30), but with the ignition on I’m only getting 1V to (85) IGN/Alternator. I guess I’m a...
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    2006 115 XL continuous alarm above 1500

    Hi everyone, Got a 2006 Mercury 115 4 stroke EFI XL Serial: 1B418890 I get a continuous alarm in gear or neutral somewhere around 1500 rpm or so. Soon as I let of the throttle it runs normally. It acts just as if the rev limiter is activated and it very well could be but I don’t know how I can...
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    Boat info library

    Anyone know what happened to the boat info library domain? http://boatinfo.no/lib/library.html I haven’t been around the forum for quite some time so haven’t kept up with the comings and going’s, but that was sure a nice resource to have around. Bummer if it’s gone for good.
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    Power issue through ignition switch

    Hey guys... 4.3L serial # 0F587086 (1995) I’m randomly not getting power through the key switch. I have 12v at “B” connection but when I turn ignition to “I” or on position I lose the 12v on both sides (“b” and “I”). Took the ignition switch off and it tested fine (continuity from b->i in the...
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    Bravo 3 digital trim to analog wiring

    Gentlemen. I picked up a 2002 formula with twin Mercruiser 496 mag engines (I’ll get back with the serial number shortly). Previous owner replaced the trim sending unit with the 2 wire analog pucks vs using the correct wire (Red,white,blue) digital pucks. The analog gauges installed on the boat...
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    Aq170 starting system wire diagram

    Happy holidays everyone. I’ve got this project boat with a Volvo penta AQ170 B30 engine. The previous sucker that owned this undid all of the wires under the dash and I’m having a harder time putting it all back together then I anticipated. Went to use the old IBoats library and it’s down so if...
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    Alpha, Gen.II lower unit interchangability,...

    I know this thread is ancient but it's literally what I have now except backwards. The upper is a 1:62 and the lower is a 2:1. Any negative consequences for matching these two?
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    Diagnostic confirmation please

    Mercruiser 5.7 MPI Bravo Serial# 0w377395 Overheating issue. Replaced seawater impeller (was in pieces), replaced thermostat, and back flushed the cooling system (can't find any blockages)....still overheating. With my temp gun I can see that the engine (block, heads, manifolds) are running...
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    Oil in water, but only after shut down

    4.3L Mercruiser (early 90s). This is a replaced long block due to a crack. Engine runs great, but found milky oil after a year of running it. Thought it was water getting in from up top (down from the cover). Changed oil, ran it...no issues. Next day I come out and the oil is milky. No rain, no...
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    Upper steering swivel shaft

    Serial numbers are missing on the transom plate andn not the original outdrive, but Im using 4898730-6225576 serial number range...(260 V8). Steering wheel movement gets to the steering lever assembly, but doesnt relay to the bell housing. Looks like the upper steering swivel is shot...
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    Automatic fuel pump wiring older Mercury

    Hey Boys, Have an older 50 hp Mercury that I can't seem to find a fuel pump kit for so I'm gonna install a low pressure electric. In the past I've just wired a switch on the dash but I'd like to step up my game to something more automatic. What I was thinking was still have a switch wired to...
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    Gekko G3 Key pad conversion to key switch

    Hi there. Working on a 2001 Gekko G3 boat. The keypad for the push button start is broken and I'm putting a regular key switch in. The key pad leads to a control module that also feeds power to the rest of the accessories. What I need is the schematic so I can bypass the module and rewire the...
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    Broken MC-1 Gimbal Housing Repair

    Got a pretty badly broken gimbal housing. In the past I have just replaced the entire transom?but I was wondering what you all thought about the repair kit. I believe the part# is: 18-8311 I've never done one this way, seems like a decent enough alternative. Thanks.
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    Converting to electric fuel pump

    Hi…Just did a block replacement on a 4.3, about a 1990. Does not have the counter balance shaft. The original cracked block had a mechanical fuel pump, the new block doesn't have the hole milled for one so I have to go electric. Obviously it is carb and there is no oil pressure switch to run...
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    Alpha One Gen II Gear Lube Leak Upper Unit

    Hey Guys, Alpha One Gen II leaking out of a hole just about the shift shaft coupler. The drive was leaking previously from the weep hole on the lower unit, did an impeller service and replaced the quad seal...now it's leaking out of the upper unit by the shift shaft.
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    Shift Interrupter Switch/Shift Cable Replacement

    I occasionally have this come up where I have replaced a lower shift cable, test it (on the muffs), then later get reports that the boat is dying in the water once under a load coming in or out of forw/rev. I understand why it's dying on the water under load and not while on the trailer, but...
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    ECM diagnostic...throttle body issue

    Serial #0F452212 5.7L EFI Bravo Three I'm getting no repsonse from the atomizers at the throttle body. To the red wire I get 12v with key on, but no pulse ground to either side (blue or green). I toned out the pin on J2 of the ECM for the pulse ground and with J2 disconnected, manually...
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    4.3L Roller rocker conversion issue

    Putting back together 4.3L Vortec 0L082849 and having an issue with valves remaining open. I'm torquing the rockers down to 16lbs as per the manual. This block did not originally have these heads...the heads are off a 2001 block. Seemingly, the push rods are too long as I am using the originals...
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    6.2L 383ci hammerhead longblock

    I need to find a build-able block to replace an 07' 6.2L 383ci hammerhead. I'd prefer to build it myself vs just buy one built but I'm not as familiar with the different variations of this block...I'm in the look before I leap stage. Is this 383 considered a "stroker"? I guess I'm not...
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    Issues under load 8.2L 415 DPX

    1998 Volvo Penta 8.2L 415-DPX XBYDCE Fresh rebuild, MAP sensor had two broken wires fixed the breaks and replaced the sensor. Was still running like hell, IAC ohm'd out, but the way it was running made it seem like it was stuck so I removed it and it ran like a champ (in a test bucket as there...
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