Recently Purchased a 18' Lowe Jon with Mercury Classic 50, 45 HP. Sea Trial went well, and after the purchase lost #3 and #4 cylinder ignition. Ended up replacing Stator, Rectifier, and Trigger. Upon inspection they had been replaced with the wrong part numbers, thus leading to the failure. Now the charging system, ignition, is all working well.
The carbs were rebuilt 6 months ago, prior to my purchase of the boat. It has all new fuel lines, Racor filter and separator, new filter under the cowl. Essentially a totally overhauled fuel system.
Now I have two problems.
1. After a solid day on the water, all ran well. The next day, it fell on its face. Pulled the plugs, dried them off, fired back up and ran all day. That night, went back out, fell on its face again, bogged, wouldnt make over 2500 rpm. Pulled the plugs again, #1 was fouled Black. #4 same. Is this a mere adjustment issue(fuel mixture) or possible a stuck needle and seat?
2. With excellent water flow, I get an over heat alarm at 5000-5500 RPM, back off to 4800 and it clears within seconds. Faulty sensor?
The engine was originally a durablend, but it had been removed. I'm running non-ethanol fuel and a ratio of 50:1
Any help would be appreciated.
The carbs were rebuilt 6 months ago, prior to my purchase of the boat. It has all new fuel lines, Racor filter and separator, new filter under the cowl. Essentially a totally overhauled fuel system.
Now I have two problems.
1. After a solid day on the water, all ran well. The next day, it fell on its face. Pulled the plugs, dried them off, fired back up and ran all day. That night, went back out, fell on its face again, bogged, wouldnt make over 2500 rpm. Pulled the plugs again, #1 was fouled Black. #4 same. Is this a mere adjustment issue(fuel mixture) or possible a stuck needle and seat?
2. With excellent water flow, I get an over heat alarm at 5000-5500 RPM, back off to 4800 and it clears within seconds. Faulty sensor?
The engine was originally a durablend, but it had been removed. I'm running non-ethanol fuel and a ratio of 50:1
Any help would be appreciated.