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    Mercury 20 hp 4 stroke 2011 low compression no spark

    Motor Fresh oil and fuel tank great 3 trips, while cruising motor quits as low oil pressure alarm sounded , so checking oil perfect re started no alarms cruising to shore motor quits won't start. Dry land check for spark none, disconnected black and yellow kill switch wire from remote no spark...
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    Merc in line 4 intake -exhaust valve layout?

    Hi, doing my valve lash on my in line merc/ chevy 1985 3.0L 4 cyl and don't have the manifold off so I need to know the valve layout from the front of motor to the back=Intake-exhaust order Thanks, Brad
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    Merc in line 4 1985 tap noise 140hp

    Thanks to the pros on this site I think I may have the answer as the tap sound may be the exhaust flapper-I will throw it in the lake and see under power if it goes away. as I noticed it winterizing and unwinterizing it this year run in water tank only , but related to this flapper I have...
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