I was cleaning my spark plugs earlier on my 140 merc and noticed heavy carbon buildup on the end of the plugs. I was wondering why i only drove for about 45 min. It seemed like i had a lack of power and im getting some hesitation when im coming up on plane. What do you think could be causing...
I know this may sound stupid to some but what does OMC stand for. I have a merc 140 and it says omc on the block and gm on the head, is it chevy, ford or what. Also is it quality or crap? Just wondering cause i see it alot on the threads.
I was told when i bought my engine it was an 85. I was wondering if their was a way i can find out using the internet exactly what year it is? Reason being i see people having these 140 engines from the 60's on and i want to know for sure what year mine is the guy i bought it from didnt seem to...
I was running my boat today just to start it up cause i have not ran it for a while. It ran fine. When i shut it down and let it sit for a few i checked the oil and noticed the level was high andthe ol smelled like gas and was very thin. What could have caused this? It was a little hard to start...
I was trying to get a smooth idle on my 140 merc today and just couldnt get it smooth. Finally , it seemed like it wasnt firing on al cylinders. I began pulling off plug wires while the engine was running. 1 2 3 responded by running rough but when reconnected went back to normal. However, when i...
I have a 140 mercruiser 1985. It has a 2 barrel rochester carb. I have a rough idle and i am running rich. How do i adjust the mixture so i can have a smoother stronger idle? thanx mike
I recently was having truoble starting my boat. I had to put the throttle all the way down for it to start and then back off it so it wont over rev. I seen that when the throttle was in the neutral position the choke was closed. When i put the throotle lever all the way down it would open up...
Happy Labor Day to everyone! I recently bought a new prop for my boat and i was just wondering what to expect. I have a 195 sea sprite cuddy cabin with a mercruiser 140 alpha 1 I/O. The prop size i had befor was 14 1/2 x 17. I told the guy i wanted to come up on plane a little faster so he told...
I was wondering what i should try next on this motor. Its locked up and i cant turn it by hand. I tried lube and everything i know. Should i start taking it apart to rebuild it or is their something i can do to try to free it up. it ran 3 years ago and just beeh sitting. Thank you for any input...
Hey guys, my friend recently inherited a boat that has an 86 volvo penta engine the guy said it ran about 3 years ago but he hasnt touched it since. So we tried the key and the starter engaged but the motor wont turn over. The crank pulley was rusty and the exterior of the motor was in poor...
Hey, guys i have a little problem that i dont know if it is normal or not. When i start the boat up the motor wiggles and shakes for the first 30 seconds or so. It shakes the boat and just dont seem right after the 30 second mark it runs fine and dont move at all. What could this be?
This past weekend i got into some shallow water and tore up my prop a little. I noticed when i turn the prop now theres a click,click,click sound it turns very smooth and it seems tight enough just a little play when i pull on it. Is this normal or do you think i might have messed up a bearing...
I have a 1989 mercruiser 140 the boat is an 89 seasprite 19.5 ft i was wondering what would be the best prop to put on. I have a 14 1/2 x17 prop on now. i would like to gain alittle speed if possible i normaly have 2 people with me on the boat. what do you think? thank you, mike
