"2 weeks ago my mercruiser 3.0
"2 weeks ago my mercruiser 3.0 started to make a very soft barely audible popping sound. Earlier in the day I had a hard time keeping it at idle in neutral. This condition only lasted for 20 minutes or so. Last week the engine ran fine for the whole 8 hours I was out. Today it ran fine for about one hour and then I started hearing a loud single pop like a backfire,every 2-3 minutes. I backed off the throttle to check things out and I never heard it again.About 4 hours later it started to act up again making the loud popping sound but now every 30-45 seconds. In addition I started to feel and hear what sounded like a miss in the engine. These sounds and misses are more prominent when going against heavy current or before planing off (heavier loads) I had a my marina install a new fuel filter/seperator and a carb filter and I also asked them to check for the popping . They said they could not verify it at the time, but this is also when the noise was very soft. Any Ideas"
"2 weeks ago my mercruiser 3.0 started to make a very soft barely audible popping sound. Earlier in the day I had a hard time keeping it at idle in neutral. This condition only lasted for 20 minutes or so. Last week the engine ran fine for the whole 8 hours I was out. Today it ran fine for about one hour and then I started hearing a loud single pop like a backfire,every 2-3 minutes. I backed off the throttle to check things out and I never heard it again.About 4 hours later it started to act up again making the loud popping sound but now every 30-45 seconds. In addition I started to feel and hear what sounded like a miss in the engine. These sounds and misses are more prominent when going against heavy current or before planing off (heavier loads) I had a my marina install a new fuel filter/seperator and a carb filter and I also asked them to check for the popping . They said they could not verify it at the time, but this is also when the noise was very soft. Any Ideas"