Good Morning,
Let me start by Thanking you for so many informative posts. They have helped me in countless ways.
I have a 2001 Seadoo Islandia powered by a Merc 240.
Last year I had problems with the boat restarting after the first start of the day. I was able to physically open the throttle plate by the linkage and it would start. Well, last year in July, I broke a tine off the hydro gate and the piece was sucked thru the drive. Never the less the engine blew. I have since rebuilt the engine and complete drive overhaul. Fired the motor and ran it the other day. Boat handled, accelerated and ran like it should. I mixed extra oil directly into the fuel as per the re-builders instructions.
As I said, the engine ran fine. Pulled up to the the fuel pump, shut her down, fueled and when I tried to restart...nothing..again.
To put things into perspective, when the engine was out, we checked all the injectors, fuel pumps, ECM Vapor canister, and replaced the reed valves. I was told the injectors were okay, just needed cleaning. When the issue happened this past weekend, i did what I always do, opened the throttle and the engine fired. It is smoking in my opinion, excessively, but it could be from the extra oil in the tank, but that would be a darker smoke, not white. I have since changed the Port side Temp sensor, ran the blower for at least 5 minutes before trying, but nothing. Now here is what I have found. When the engine does not start, and it is hot or cold, if i immediately pull the plugs, I can actually see little puffs of white pulsing smoke coming from the cylinder I removed the plug from. Almost as if the injectors are pulsing when the main battery power is on, even if the key is off. By some of your previous posts, I thought it may have been the port side temp sensor, putting the TPS into a very rich condition as to not lean out the cylinder. Could this be the dreaded TPS? Since everything was changed, and or renewed, to end up with the same problem as before the engine blew, leads me to believe it is still the same issue that had nothing to do with the replacement. I have no problem changing the TPS or anything else you may suggest, but I am at wits end. I can tell you that when the engine does start, and than i turn it off, you can see white smoke continuing to come out of the thru hull exhaust pipes. Once I run the boat for a while, everything clears, but on return thru that long ride thru the lagoon, the smoke returns. The engine runs great. Plenty of throttle, planes well. Plugs come out wet with raw fuel. If i change the plugs, they fuel foul as well. If i open the throttle by hand down by the linkage, it fires.
Please, any help would be greatly, greatly appreciated.
Joe
Let me start by Thanking you for so many informative posts. They have helped me in countless ways.
I have a 2001 Seadoo Islandia powered by a Merc 240.
Last year I had problems with the boat restarting after the first start of the day. I was able to physically open the throttle plate by the linkage and it would start. Well, last year in July, I broke a tine off the hydro gate and the piece was sucked thru the drive. Never the less the engine blew. I have since rebuilt the engine and complete drive overhaul. Fired the motor and ran it the other day. Boat handled, accelerated and ran like it should. I mixed extra oil directly into the fuel as per the re-builders instructions.
As I said, the engine ran fine. Pulled up to the the fuel pump, shut her down, fueled and when I tried to restart...nothing..again.
To put things into perspective, when the engine was out, we checked all the injectors, fuel pumps, ECM Vapor canister, and replaced the reed valves. I was told the injectors were okay, just needed cleaning. When the issue happened this past weekend, i did what I always do, opened the throttle and the engine fired. It is smoking in my opinion, excessively, but it could be from the extra oil in the tank, but that would be a darker smoke, not white. I have since changed the Port side Temp sensor, ran the blower for at least 5 minutes before trying, but nothing. Now here is what I have found. When the engine does not start, and it is hot or cold, if i immediately pull the plugs, I can actually see little puffs of white pulsing smoke coming from the cylinder I removed the plug from. Almost as if the injectors are pulsing when the main battery power is on, even if the key is off. By some of your previous posts, I thought it may have been the port side temp sensor, putting the TPS into a very rich condition as to not lean out the cylinder. Could this be the dreaded TPS? Since everything was changed, and or renewed, to end up with the same problem as before the engine blew, leads me to believe it is still the same issue that had nothing to do with the replacement. I have no problem changing the TPS or anything else you may suggest, but I am at wits end. I can tell you that when the engine does start, and than i turn it off, you can see white smoke continuing to come out of the thru hull exhaust pipes. Once I run the boat for a while, everything clears, but on return thru that long ride thru the lagoon, the smoke returns. The engine runs great. Plenty of throttle, planes well. Plugs come out wet with raw fuel. If i change the plugs, they fuel foul as well. If i open the throttle by hand down by the linkage, it fires.
Please, any help would be greatly, greatly appreciated.
Joe
