Home › Forum › Ask A Member › 18hp h2o in bottom cylinder › Re: 18hp h2o in bottom cylinder
yeah, doesn’t seem like you are 100 percent sure just what liquid is flooding the bottom cylinder. You could simply remove the gearcase then start the engine for a few minutes to see if it runs any differently….If the bottom cylinder is still flooded, then it must be fuel….
What cylinder is the fuel pump plumbed into? Perhaps the diaphragm is leaking if it is plumbed to the lower cylinder. You could pull the fuel hose and let the engine run to see if it cleans up once fuel is out of the pump…Perhaps this test should be done before going through the trouble of removing the gearcase….
You have had the head and exhaust cover off, so it would seem like you would have seen any obvious internal problems, perhaps you have a bad leaf plate/reed to the lower cylinder.