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    1987 MIE 454 oil pump intermediate shaft?

    OK here is what happened... My buddy had remanufactured long blocks installed into his boat... The mechanic he had build them out forgot (he did not realize until later) to install the oil pump intermediate shaft in one of them and the engines where installed into the boat (43' welcraft) and it...
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    1990 crusader 454 spark plug?

    I have 2 1990 crusader 454/350HP's and its time for spark plugs... What are the recommended/best ones to use? They have pertronix flamethrower distributors. Thanks for any help!! Brian
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    14 pin plug diagram for a 2009 115 4S

    I did an outboard conversion from a 2008 mercruiser 3.0 (with 14 pin harness) to a 2009 mercury 115 FI 4S (also with 14 pin harness) and I'm trying to get all of my gauges to work... as of now all I have is tac. It starts and runs great but I would like to get the trim level gauge/oil...
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    2007 3.0 TKS not getting power?

    I'm working on my father in laws 2007 3.0 TKS (sn# 1a080342) carb... he was having all sorts of starting/running issues so I took the carb to rebuilder in the area (top rated and used him before... he does A+++++ work) and when I got it back I bolted it up and it fired up right away... but after...
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    mercury 85632a40p11 prop

    I cant seem to find the specs on this prop "85632a40p11" what on it and I presume that it is an 11" pitch but I dont know the diameter and I'm looking for a replacement.... and anyone help me out with some info on it? BTW its a 2005 3 CYL 4 stroke 40 HP
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    2005 40 EFI 4 stroke issues

    I recently bought a RIB with this engine and it runs great aside for a couple of annoying issues... 1st I replaced the throttle and shift cables with ---->SeaStar CCX179xx XTREME Mercury 600A Type Control Cable and I'm having a problem getting it into neutral from forward or reverse after...
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    delco MR43 plug question

    I have a '97 4.3 mercruiser with the occasional run on issue... the service bulletin says to go one colder on the plugs... so what is the next step colder plug than the MR43's?
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    strange guardian mode issue

    we just splashed my buddy's boat yesterday and he is having a strange issue... when rolling into the throttles no issues until after 4100 RPM's +/- then both (starboard first then port separated by about 1-2 seconds) engines go into guardian mode (no lights or warnings on the gauges) or if you...
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    2005 3.0 alternator belt

    I have looked all over the place and I can not find a part # for it... I want to have the belt in hand before I go down to the boat... can my iboats family help me out on this please??
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    water heater connections 1999 5.7

    My buddy wants me to help him install a water heater... I need to know where to connect the water lines to the engine... its a 1999 mercruiser 5.7 alpha
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    2004 5.0 MPI wiring questions

    1st off serial #0w061474 2nd the problem that is happening is that the alarms for the oil pressure/water temp/drive oil level is not working... when you turn the key on there is a "beep" and the instruments work but when I ground the water temp switch on the thermostat housing or push the float...
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    mercruiser part #10-35366

    I'm looking for mercruiser 10-35366 screw... but at $6-10 a pop what would be the length/thread count so I could match it someplace else??
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    another 2004 3.0 TKS question

    I'm at a loss for what is going on with this engine... It runs great it starts great from a cold start... but here is whats going on... starts great cold... but when warm you have to give it a LOT of throttle (and yes the TKS is turning off no hissing sound) ... and it fires right up... and the...
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    timing question 2003 mercruiser 5.0 MPI

    OK here is the deal... My buddy has pulled his intake off to fix an intake leak and needs to re-assemble and drop the distributor back in... I know to get it to TDC and drop it in with it pointing at the #1 plug but how to we set the base timing? I know how with the thunderbolts... what is the...
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    2006 3.0 head gasket propblems...

    I seek the help of all my knowledgeable friends here on iboats... my friends 2006 3.0 has blown the head gasket out of the block in the exact same place 2 times now and I cant figure out why... here is the back story on the engine... its in a 32' pontoon boat and when it was purchased it had a...
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    2005 mercruiser 3.0 TKS fuel problems I think??

    ok here is what is going on.... problem --->engine will not keep running with out a LOT of throttle when starting and to keep it running... thought we had a problem with the anti siphon valve (we did open the filler cap just incase it was a clogged vent line)... so we disconnected the fuel...
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    2005 mercruiser 3.0 TKS carb...

    ok my friend has just rebuilt his 3.0 and before it was running properly aside form low compression... now that the new engine is in it will not run (yes it was cleaned of old fuel and set in a box on the shelf) for crap... after reading some of the story's here and on other sites I'm wondering...
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    1997 mercruiser 4.3 LX fuel / ignition issues??

    ok to give everyone the back story my engine was running good until I started getting rod knock(water in the oil from cracked riser spacer) last trip... well I knew it was time for a rebuild so I pulled it and sent it off to (a very trusted) a shop and had it rebuilt... no major issues... had...
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    what plugs for my 1979 merc...

    i have a 1979 merk 20 HP that has the champion L78v plugs in it now but i dont like the "ski" plug type (flat plug no electrode)... what would be a sutable champion replacement? any help would be great!!
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