Hi there,
I have a 99 sugar sand mirage with a SportJet 120 in it. I have had the boat for several years now and have never had a problem until today. I was using the boat earlier today for fishing, and when I was approaching the dock at the end of the day I felt that the engine was running differently. Once at the dock, the engine turned off on its own and from then on it was difficult to start up again. I took it out of the water, cleaned out the carbs and put the boat back in the water to test it out. It had difficulty starting and when it did start I could hear that it was only running on 2 out of the 4 cylinders. Here is what I know:
My problem: cylinders 1 and 3 are not working. (I know this because when it is running, the engine only shuts off when I pull the spark plug cap off cylinders 2 and 4)
-I tested all 4 cylinders and all of them have equal pressure of 150psi
-I replaced all 4 spark plugs
-I tested all 4 spark plugs and they all have a strong spark
-When I took out the spark plugs for inspection, none of them were dry (meaning that gas is getting to them ok)
-I cleaned out the carbs and everything is fine with them
Is it possible that the spark timing is off? Could this be an electrical issue?
Any help/advise/response is greatly appreciated! Thank you in advance for your help!
I have a 99 sugar sand mirage with a SportJet 120 in it. I have had the boat for several years now and have never had a problem until today. I was using the boat earlier today for fishing, and when I was approaching the dock at the end of the day I felt that the engine was running differently. Once at the dock, the engine turned off on its own and from then on it was difficult to start up again. I took it out of the water, cleaned out the carbs and put the boat back in the water to test it out. It had difficulty starting and when it did start I could hear that it was only running on 2 out of the 4 cylinders. Here is what I know:
My problem: cylinders 1 and 3 are not working. (I know this because when it is running, the engine only shuts off when I pull the spark plug cap off cylinders 2 and 4)
-I tested all 4 cylinders and all of them have equal pressure of 150psi
-I replaced all 4 spark plugs
-I tested all 4 spark plugs and they all have a strong spark
-When I took out the spark plugs for inspection, none of them were dry (meaning that gas is getting to them ok)
-I cleaned out the carbs and everything is fine with them
Is it possible that the spark timing is off? Could this be an electrical issue?
Any help/advise/response is greatly appreciated! Thank you in advance for your help!