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    120 HP mercruiser 153 ci 2.5 L issues

    I did drain the fuel tank 2 months ago and put all new fuel in. And yes set the timing and dwell. In order for it to run I have to advance it to the point where it sounds clunky when starting. And yes we have adjusted the mixtures on the carbs. Spark plugs are quite black so thought there was a...
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    120 HP mercruiser 153 ci 2.5 L issues

    Ok thanks a lot, when I’m home from work tonight I’ll take a look and send pictures
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    120 HP mercruiser 153 ci 2.5 L issues

    That would be awesome thanks a lot.
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    120 HP mercruiser 153 ci 2.5 L issues

    Okay thank you for the input. So I need to run a fuel line from the fuel pump I have blocked off to the carburator or back to the gas tank? I guess my next point of attack is to buy a rebuilt original carb and see if that fixes the issues I’m having? For the hose breather is it okay the way I...
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    120 HP mercruiser 153 ci 2.5 L issues

    Also I’m not sure what to do with the house coming out of the valve cover. It leaks a tiny bit of oil so I don’t want to hook it up to the carburator
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    120 HP mercruiser 153 ci 2.5 L issues

    Hi guys, I have a 1972 mercruiser 120 Hp 2.5 L boat I decided to restore a couple years ago. The engine got fully rebuilt. Couple things I’ve replaced when it wouldn’t run. -a new replacement carburator from Amazon (2 barrel) with electric choke -new mechanical fuel pump -in-line fuel filter...
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