Recent content by Waterproof

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    Cant get over 3200 RPM

    I have a 19' ski boat that the previous owner put a "new" 350 in, what compression should I have, I am worried that he put some car rebuild in instead of marine and perhaps my compression is not high enough. I've played with the timing some with no positive results and the motor has a small 2...
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    1999 Saltwater EFI 225 overheats

    Red smart guage light for temp,(On the water and on muffs) and I am unable to touch the heads (waterjackets) becaust the motor is so hot, but strong pissing at only a luke warm temp...What gives? Thanks for the help!
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    '95 150 Black Max oil Injection

    My black max oil injection was disabled but not removed by the previous owner. The motor now runs on Premix. Anyhow, is there any problem with leaving the pump on the block as it is now, I don't seem to be sucking any air, or do I need to buy the cover plug kit and remove the now in-op pump...
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    Spark Plugs

    I have a '95 150 Black Max, here is the deal. Merc. Specs. NGK BU8H, Which crosses to Champion L6VC. My 89' tower of power 115 used L76V with the same ignition components. L6VC is a hard pulg to find. The Clymer manual says L76V is the cross for NGK BU8H. So here is my cood questoion are the...
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    '95 Black Max 150 hp, weak stream

    On my 95' Black Max I get a very weak tell tale stream. I have replaced the poppett and water pump (Wear plate etc.) the boat seems to run about 3/4 the way up the temp scale after a WOT run, but my temp guage does not show actual temprature. The water from the tell tale steams because it is...
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    Gearset Noise?

    Sorry for the second post here, perhaps I can clarify a bit more. I hear a "Chatter" or rattle from my gearste on my 1988 Merc. 115 I-6 OB on quick RPM changes. If I goose the throttle, this noise is heard during the RPM change, then subsides as the RPM becomes stable. I hear this noise while in...
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    Clatter in lower unit...

    As I rev my 1988 115 hp. Merc I-6 I hear a clatter (Sounds like a bolt loose in the cowling) as the motor RPM comes up, then down. I've been told that this is an indication of wear in the gearset, but should I be overly concearned or is some gearset noise normal on an older OB? I only hear the...
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    Are automotive plug wires OK?

    I noticed arcing under the cowling last night, bad wires seem to be the problem. My merc. dealer wants over $100 for a set of 6 9" wires (Existing Wires have copper cores, but standard boots and terminals otherwise) Can I use universal automotive wires? (8mm, black core wire) or is this just...
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