"Hi. I have a 2001 (purcha
"Hi. I have a 2001 (purchased new in 02) 19.5ft Bayliner with 4.3L 190hp Alpha One. Since last year I have been having what can best be described as a knock or backfire from the engine that occurs occasionally. Of course I brought it back to the dealer and they couldn't duplicate the problem. I have changed the distributor cap, changed the oil, been through multiple tanks of gas, changed water/fuel seperator and cleaned the flame filter(sorry not sure of its correct name). Anyway I have driven this boat at various speeds and at various rpm's and I can not narrow it down to a specific speed or rpm. I guess aroud 20-25mph would be the closest although it has happened at higher speeds. Never has happened at idle speed only when moving. Last week I was out for a couple of hours and had no problem, but on my way back to the boat ramp it knocked/backfired 5 times in a 3 or 4 min span then it didnt knock again. Last year went camping/boating and for 4 straight days nothing then occasional knocking/backfiring on my 5th and last day. This is very fustrating because other then that the engine starts and runs very smooth. Kinda makes me think it is going to cause a serious problem and leave me straded out on the water. Still under an extended warranty. Any suggestios would be appreciated.
Thanks,
Rich"
"Hi. I have a 2001 (purchased new in 02) 19.5ft Bayliner with 4.3L 190hp Alpha One. Since last year I have been having what can best be described as a knock or backfire from the engine that occurs occasionally. Of course I brought it back to the dealer and they couldn't duplicate the problem. I have changed the distributor cap, changed the oil, been through multiple tanks of gas, changed water/fuel seperator and cleaned the flame filter(sorry not sure of its correct name). Anyway I have driven this boat at various speeds and at various rpm's and I can not narrow it down to a specific speed or rpm. I guess aroud 20-25mph would be the closest although it has happened at higher speeds. Never has happened at idle speed only when moving. Last week I was out for a couple of hours and had no problem, but on my way back to the boat ramp it knocked/backfired 5 times in a 3 or 4 min span then it didnt knock again. Last year went camping/boating and for 4 straight days nothing then occasional knocking/backfiring on my 5th and last day. This is very fustrating because other then that the engine starts and runs very smooth. Kinda makes me think it is going to cause a serious problem and leave me straded out on the water. Still under an extended warranty. Any suggestios would be appreciated.
Thanks,
Rich"