1 reply to this topic

[2fast4u]

Hi,
I'm new to this site, and glad to be here. I own a 96 speedster, and will take it out for the first time this Wednesday (hopefully). Last year I noticed that when I started the engines, they smoked alot (one more than the other). Somewhat embarassing. I also noticed that there is pure oil leaking around the carburators. I'm not sure what it can be. I checked over and over again for leaky lines, and they aren't. It seems to me that the oil flows by gravity and overflows in the carburator. However it only seems to happen if the boat is unused for three or more days. When the engines have been run for about ten minutes and are re-started there is no smoke and no oil leaking. Is there a check valve or something? The boat runs great and there is no loss of power and speed. Any info would help alot.

[tiggerman]

Hi,
I'm new to this site, and glad to be here. I own a 96 speedster, and will take it out for the first time this Wednesday (hopefully). Last year I noticed that when I started the engines, they smoked alot (one more than the other). Somewhat embarassing. I also noticed that there is pure oil leaking around the carburators. I'm not sure what it can be. I checked over and over again for leaky lines, and they aren't. It seems to me that the oil flows by gravity and overflows in the carburator. However it only seems to happen if the boat is unused for three or more days. When the engines have been run for about ten minutes and are re-started there is no smoke and no oil leaking. Is there a check valve or something? The boat runs great and there is no loss of power and speed. Any info would help alot.

More than likely you have the dreaded "worn out crankshaft seal" syndrome. The internal seals are known to wear out and let oil gravity feed into the crankcase. The excess smoke comes from the oil burning out of the crankcase. If allowed to sit long enough, some engines "hydrolock"- the cylinders fill with oil and since it can't be compressed, the engine locks. This condition can be cleared up by removing the sparkplugs and spinning the engine over with something covering the plug holes.
This can be repaired with new seals or a replacement crankshaft. If you go the new seal route, a machine shop will still have to perform the seal change out because of the way the crank is pressed together.. Other than excess smoke at start-up, this causes no harm. But at least you know you are getting oil!!!