1990 Mercury Powerhead Black Max 150 6 cyl

Danny Buchanan

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Good morning just wondering if someone could tell me if they know a reliable source to get a powerhead rebuilt.Lost a oil line a week ago going down the lake, and it was just like you reach over and shut the key off.Had the line replaced the mechanic did a compression check and said #2 cylinder only had 50 lbs compression all others had 115.Or could i just put 1 pston in!Any advice appreciated. Thanks Danny
 

andy6374

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Re: 1990 Mercury Powerhead Black Max 150 6 cyl

Danny-<br />If you oil pump went, all the cylinders would not recieve oil...not just cylinder #2. More than likely than not you had a lean carb. But since the others are fine I'd do a decarb first and see if that improves the compression. If it doesn't then it's time to pull the cylinder heads and take a look. <br /><br /><br />When do you live? No one can tell you where to take your engine if they have no idea where you live.
 

Danny Buchanan

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Re: 1990 Mercury Powerhead Black Max 150 6 cyl

Hey Andy,Thanks for responding.I live in central Ca,Near Modesto.I was told i should put a new powerhead on.Of course thanks the dealer talking!$$$$$I will for sure check out the carb thing.Thanks again Danny.
 

Danny Buchanan

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Re: 1990 Mercury Powerhead Black Max 150 6 cyl

Hey phatmanmike just got back into town,i will keep that in mind.Im going tomorrow to put the ears on the motor and start it up i hope it runs on all 6 not 5 cyl.Thanks Danny
 
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