"I am a new comer and hope I c
"I am a new comer and hope I can get pointed in the right direction. I have a 5.7 mercrusier that I just had rebuilt just over a year ago(burnt piston) and dont have but maybe 10 hours on it. I have had it out 4 times this year however the last trip I had problems. We took maybe a 1/2 hour ride with no problems at all. We shut it down swam a little and when I started it up it did not sound normal. It shut off on me after putting into gear. I got it started again and put it into gear and just idled for a few. The motor just did not sound right. (studdering,missing, and knocking a little)I shut it down opened the engine compartment up and started it again and heard a very loud clanking noise. It was not a continious noise but like a one time noise but very loud. My first thought is no not again. I had it towed home and started looking into it. I tried to start it and it turns over okay but now it will not start at all. I have not heard that loud noise again. I pulled the cap and the rotor turns. I pulled the plugs and turned it over and no sign of water. checked the oil no sign of water there either. My next move is a compression check. I was reading a earlier post and found a similer problem and it ended up being the upper unit spun a bearing and cracked the case. If that is my problem would that cause the engine not to start. I checked and I am getting gas to the carb and spark at the coil. Any suggestions will be greatly appreciated. thanks"
"I am a new comer and hope I can get pointed in the right direction. I have a 5.7 mercrusier that I just had rebuilt just over a year ago(burnt piston) and dont have but maybe 10 hours on it. I have had it out 4 times this year however the last trip I had problems. We took maybe a 1/2 hour ride with no problems at all. We shut it down swam a little and when I started it up it did not sound normal. It shut off on me after putting into gear. I got it started again and put it into gear and just idled for a few. The motor just did not sound right. (studdering,missing, and knocking a little)I shut it down opened the engine compartment up and started it again and heard a very loud clanking noise. It was not a continious noise but like a one time noise but very loud. My first thought is no not again. I had it towed home and started looking into it. I tried to start it and it turns over okay but now it will not start at all. I have not heard that loud noise again. I pulled the cap and the rotor turns. I pulled the plugs and turned it over and no sign of water. checked the oil no sign of water there either. My next move is a compression check. I was reading a earlier post and found a similer problem and it ended up being the upper unit spun a bearing and cracked the case. If that is my problem would that cause the engine not to start. I checked and I am getting gas to the carb and spark at the coil. Any suggestions will be greatly appreciated. thanks"