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  1. P

    trim limit adjustment

    My 87 3.0 merc trim seems to be working good but I want to make sure it's adjusted right . I read something about 21 3/4 " measurement on the trim cylinder. Where do you take these measurements from?
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    high speed miss

    I've got a 87 3.0 mercruiser and I've replaced all the electronics(points , plugs .condensor) . rebuillt the carb.. valve job , new fuel pump, and set the valves. I didn't gap the plugs. It's running the best it's run since I've had it (1 year) but it still misses at high speeds ( about 35oo...
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    shift dogs

    I got a 87 3.0 mercruiser and was wondering how to tell if the shift dogs are bad or if it's just out of adjustment. It seems to shift better when it warms up. AT first it just grinds when I attempt to put it in gear.
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    gas in crankcase

    I had gas in the crankcase of my 87 3.0 litre merc so I replaced the fuel pump as diagnosed. I was still experiencing flooding so I've just rebuilt the carb. I noticed BEFORE I cranked it for the first time , gas in the crankcase again. The compression in the cylinders was between 130 and 150...
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    mercarb rebuild

    I got my rebuild kit for my 87 3.0 2 barrel mercarb but the instructions are not very clear. I can't really use the way it was assembled as a guide because someone did a bad job on a previous rebuild. Any one got any clear instructions out there for this carb?
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    power valve

    The timing on my 87 3.0 mercruiser recently got so bad it was popping back through the carb. a lot. A mechanic friend of mine told me this might screw up the power valve in the bottom of the carb.and cause it to flood out real bad like mine is now doing. Anyone ever heard of this?
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    carb. kit?

    I've got 87 3.o mercruiser and it's running real rich. I've set the timing but the carb. loads up bad. My question is...the local marine dealer said it would be about 130.00 to get the dfferent carb. kits and I"M wondering if I could start with the basic gasket kit before I invested that much...
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    timing mode?

    Is there a timing mode for a 87 3.0 mercruiser with points ?
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    timing off

    hey... what could cause the timing mark to fall 60 degrees off when I've checked tdc on # 1 ? As I tried to move the distributor to correct the problem it runs worse until it quits. 87 3.0 mercruiser. I've reset the valves after a couple of bent push rods. NOT really sure why they bent.
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    carb, loading up

    I'm trying to set the timing my 87 3.0 mercruiser and the timing light shows it to be about90 degrees off. The mark is at 9 o'clock when it should be aT 2 oclock. THe closer I get it to where it should be the worse it runs. It also seems like the carb. is loading up. I'm putting the light on #...
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    jump time?

    I took the 87 3.0 mercruiser out after replacing fuel pump ..;. adjusted shifting so it would shift properly .... set carb... and noticed it popping at high speed. So I got my buddy to drive while I PLAyed with the timing , but before it could get up to full speed it started popping really bad...
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    fuel pump replace

    I'm replacing the fuel pump on my 87 3.0 mercruiser . Is any trick to it or does it just bolt on the block...ie... how does the arm fit in the block?
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    fuel pump rebuild?

    is there any way to rebuild the fuel pump on a 87 3.0 mercruiser?
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    another mercruiser shift prob.

    Hey guys.... I've been reading about adjusting the shift cables in the forums and was wondering if there's any wires that go from the foot to the shift interupter switch or is the switch activated by the movement of the cable? I've recently rebuilt my transom and can't find where two of the...
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    3.0 oil change

    Does anyone know the oil filter and capacity for a 87 3.0 liter ?
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    flapper rattle?

    I've got a ringing sound whenever I rev up my 87 3.0 mercruiser and I'm wondering if it could be the exhaust flapper. I've considered the coupler but I've heard it's usually a popping sound. '
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    exhaust gasket

    I've been looking for the gasket at the base of the exhaust tube on my 87 3.0 mercruiser.It's where it attaches to the transom plate. I've found the diagram of the engine and the exhaust assembly and the transom assembly and it's not there. Anyone know where I can find the part #?
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    coupling replacement

    I've got a 87 3.0 alpha mercruiser and I'm wondering if I have to pull the engine to replace the coupler.
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    bad coupler?

    I got my 87 glasstron back in the water today after having the transom rebuilt and it leaked. It looks like it might be coming in around the exhaust coupling behind the engine. I didn't replace the gasket there ... does that usually need replacing after removal? Also, as the title suggest...
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    milky lower unit

    had my bellows replaced on my 87 3.0 mercruiser but the transom still had a leak. had the transom replaced and checked the lower unit oil before I PUt it back in the water and it was a little milky. What should it look like if it's good?
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