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    Engine temp gauge will not read past 120 degrees.

    So my temp gauge will not go past 120 deg even afterba long while running , even though the thermostat (new) is rated at 160. How can I test the sending unit and gauge? Thanks. Les.
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    Mercruiser 5.0L backfiring after 3k RPMs

    Hello. So, slowly but surely, Im getting there. I am currently waiting for the rebuild kit for my mercarb 2bbl. If you were following my last thread, I finally got the engine to quit stalling after throttling down to neutral. I guess I was easing down way to slow and was causing the switch by...
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    Engine stall and shutts off when suddenly dropping out of high throttle and gear.

    Ok, Break out another grand, right? lol I have a 305 gm 5.0L with a mercarb,while in muffs, i kick it in gear, throttle up slowly, all is good. Throttle up quickly, hesitates. When I quickly drop out of high throttle, engine stalls. I am thinking it's got something to do with carb adjustment...
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    Normal idle rpm for GM 305.

    Hey guys. What is the recommended idle rpms for a mercruiser gm 305?
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    Starboard exaust manifold runs hot, while the port exaust manifold stays cool?.???

    I have a 1984 Chris Craft Scorpion 215 w/ i/o mercruiser gm alpha one, 5.0L engine. I had the engine running for about 15mins, the starboard exaust manifold was considerably hot compared to the port manifold. I replaced the thermostat yesterday along with housing gasket. The water impeller is...
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    Mercruiser Alpha tilt gauge not working, stuck on Up position.

    My tilt gauge is stuck on the up position. Has been since I bought the boat. I haven't tested the gauge yet, but invade it was not faulty, is there another part responsible for a wrong reading on the tilt position? Mercruiser Alpha one.
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    Mercruiser GM 305 5.0L hole in the motor, repairable? What's my damage?

    So I took out the boat today after replaceing the carb. I was cruising at 1/4 throttle, I went up to 3/4 and went for about 5 mins like this, then I slowed down, then after another 3-4 mins I went up to 3/4 throttle again, about 30 sec later the engine started to sound weird so I backed down to...
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    Replacing a Mercarb carburetor with a Rochester 2 GC..???

    Hi fellas. I am in need of replacing my carburetor, and need to know if I can replace a Mercarb 2bbl on a 305 gm engine, with a rochester 2GC 2-jet carb? Will this engine accept this swap? Thanks. Les.
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    Can't find the model of my carburetor for a rebuild kit.

    Hi folks. I have a 1984 chris craft scorpion 215 with a GM mercruiser 305 5.0L. The motor was taken from another boat and all I have is the motor serial number. The carb is a 2 barrel. The only number I could find on it was a no go at the auto parts store cross check. Any help appreciated. The...
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    Replacing a Power steering ram on a 1984 Chris Craft Scorpion 215 with Alpha One driv

    Hello. I need help replacing the power steering ram on my boat (model on the title)?I bought it and the owner has the part, which he upgraded to a newer style ram. Can anyone point me to any manuals that indicate how to replace this? Is this a very diffcult part to replace? Thanks in advance for...
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    1984 GM V8 w/ mercruiser drive.

    Hi folks. I am going to see a 1984 Chris Chraft Scorpion 215 with a GM 350 V8 and a Mercruiser Alpha One Drive, and I am wondering what the recommended compression range for this size engine is. Also, it needs a power steering pump replaced which the owner has already bought, just needs...
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    Spark plug housing thread gone!!!

    Hi guys. My brother in law just gave a small honda 4 stroke, prob between 10-20 hp. I have a problem, the thread on one of the spark plug housings is stripped. I need to figure out something to get the spark plug back in there without coming loose. Anybody have any ideas? Thanks.
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    Opinions PLEASE!!

    Hey folks. I am in the market for a center console, and came accross this: http://tampa.craigslist.org/hil/boa/2989625596.html I wonder if it's a good deal. I have already brought the price down to 3k. So? Thanks, Les.
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    Can anyone please point out where the switch boxes are?

    Hi. I have a 1985 Black Max 175, and I need to know where the motor switch boxes are, and possible what they look like? Thanks.
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    Still doing the same thing!

    A while back Iposted about my Merc Black Max 175 bogging down and shutting off at higher rpms. Took it to shop. Mechanic said motor checks out fine (compression, sparks, temp), he ran for a long while without trouble, but found a hose on the fuel pump loose. He fixed, and today I took it to the...
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    Gas Tank Vent; Open or Closed?

    This very well may be one of those stupid questions no one has heard in a while, but since I am new to the boating world, and you guys are very informative and kind, here goes. Should the vent on the gas tank (6 gal premixed) be closed or open while running the boat? Thanks.
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    Installing new tachometer, need to find unrectified side of the alternator.

    Ok, so I will be installing a new tach, and need to know which terminal is the unrectified one on the rectifier. It's a 175hp 1985 BMax. Here's a pic. There's the old tach, original from 1974, not working, I wouldn't expect it to anyways lol, and has no wires hooked up, so I can't follow the...
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    Mercury 175 Black Max overheating.

    Ok, took the boat out to my mechanic today, he says compression is good, but the right power head is heating up as much as 20 deg more than the left. He thinks is the poppet valve, or thermostat. I noticed that the poppet valve housing is not as I've seen in other motors. The housing seems...
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    Can anyone identify the part?

    I have a 1985 mercury black max 175, and I notice that right above the rectifier, there's alittle black piece bolted to the block. It's round, no larger than a baby carrott, and has a black wire grounded to the block, and a balck and green wire cut off right at the base, that hooks to this...
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    Now it looses power! 1985 Merc Balck Max 175hp.

    Ok, Today morning I went over all the wires that could be shorting, killing my motor as soos as I tilt down. Found some loose, and repaired. I also noticed that there was no wire going from the rectifier to the battery, took care of that. Now, I tried to take the boat out again, got to the...
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