I need some advice on my twin 350 Chevy MAG MPI Bluewater inboard motors on my 1999 Silverton 322. Specifically, the starboard motor. Recently took a 701 mile trip from Chattanooga, TN to Hendersonville, TN. The previous owner had the boat for the past 7 years but only took her out on the weekends, and only about 10-20 miles a month. It had been sitting for several months as I understand it. The trip took me 8 days, and the boat performed well until the last day. The last 200 miles of the trip was upstream on the Cumberland and it had a heavy current flowing against me. I checked the fluids in Clarksville and notice that both engines had used a little oil. The previous owner had been using 30 Rotella diesel oil in the gasoline engines for years. I attempted to get 30, but the store had only 15 and I put that into both engines. After a while the PSI on both engines would drop from 40 to 20 then back up, but then settled down, and appeared to be ok. However, the starboard engine started loosing compression and I had to back her down to make it to Hendersonville. I did run low on gas in the starboard engine with 6 miles to go, and had to pull her into a closed marina to fill up.
OK, now the problem. Since the fill up, I had to limp the 6 miles to its new home as I did not have the starboard engine wanting to work. It seemed to be sputtering, and did stop when I had the RPM below 1000. I had checked the oil, and at first I thought I had over filled the oil, but I recently did an oil change on it and it appears to had gas in the oil. I changed out the spark pulls and the engine cranked right up, and everything seems to be running good except for some small white smoke coming from the exhaust. I was told to put some fuel injection cleaner in the starboard tank, and since then the engine runs good but it is putting out a lot of smoke, but PSI and temp seems fine. Could anybody tell me what is going on here? I did check the raw water intake valve and both of those filters had what looked like spinach in them, they have been cleaned since, so originally the water circulation was off, but the ship handled great the whole way until the end. Is the white smoke caused by the fuel injection product and will eventually be burned off if I run her this weekend, or could it be something else? I would not doubt that something may have clogged the fuel injectors when I ran short on fuel, but it was running slower before the gas got low though. But was not smoking until I ran low on gas. Sorry for the long post...any suggestions as to what I should try next to stop the smoking?
OK, now the problem. Since the fill up, I had to limp the 6 miles to its new home as I did not have the starboard engine wanting to work. It seemed to be sputtering, and did stop when I had the RPM below 1000. I had checked the oil, and at first I thought I had over filled the oil, but I recently did an oil change on it and it appears to had gas in the oil. I changed out the spark pulls and the engine cranked right up, and everything seems to be running good except for some small white smoke coming from the exhaust. I was told to put some fuel injection cleaner in the starboard tank, and since then the engine runs good but it is putting out a lot of smoke, but PSI and temp seems fine. Could anybody tell me what is going on here? I did check the raw water intake valve and both of those filters had what looked like spinach in them, they have been cleaned since, so originally the water circulation was off, but the ship handled great the whole way until the end. Is the white smoke caused by the fuel injection product and will eventually be burned off if I run her this weekend, or could it be something else? I would not doubt that something may have clogged the fuel injectors when I ran short on fuel, but it was running slower before the gas got low though. But was not smoking until I ran low on gas. Sorry for the long post...any suggestions as to what I should try next to stop the smoking?
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