Ok guys, I am an ATV mechanic that can't seem to find out what is going on here. Basically, last year the boat (2007 Tahoe 215 w/ 4.3 mercruiser carbureted) ran fine all last year. Winterized the boat. Just went to start for the first time last week & it would start for only a second or two, no more, then immediately shut off. I tried choking, giving it gas & everything & still would only run for 1-2 secs, then shut off.
Finally got it to my shop today & tried diagnosing, but not familiar with it at all (not an ATV)!!!! I started looking at this forum some & found there was alot of talk about maybe an oil pressure switch being bad??? All I have done is disconnected the fuel line at the carb & applied 12vdc directly to the fuel pump to make sure it is working & it did. I have also remove the fuel/water seperator filter & found no water or sediment in it at all. Went ahead & replaced it while I was there.
My oil pressure switch is located at the back of the motor on top. It has only one wire going to it (can't remember the color). Someone told me to disconnect it & jumper it to ground. I tried that & still nothing???
Any ideas & tips would be greatly appreciated!!! Maybe some of you guys have ATV's that I could return the favor with.
Thanks so much
Larry
Finally got it to my shop today & tried diagnosing, but not familiar with it at all (not an ATV)!!!! I started looking at this forum some & found there was alot of talk about maybe an oil pressure switch being bad??? All I have done is disconnected the fuel line at the carb & applied 12vdc directly to the fuel pump to make sure it is working & it did. I have also remove the fuel/water seperator filter & found no water or sediment in it at all. Went ahead & replaced it while I was there.
My oil pressure switch is located at the back of the motor on top. It has only one wire going to it (can't remember the color). Someone told me to disconnect it & jumper it to ground. I tried that & still nothing???
Any ideas & tips would be greatly appreciated!!! Maybe some of you guys have ATV's that I could return the favor with.
Thanks so much
Larry