On an 81 75hp Evinrude I have fuel dripping from the lower crankshaft bearing cap when I kill the engine, is it supposed to do that as some kind of way to drain excess fuel from the crankcase when the engine is not running? Doesn’t seem to be a problem while the engine is running.
I have checked all the fuel lines, carb's, intake gaskets etc but no sign of a leak. Engine runs great at idle and at WOT. The fuel drips from the bolt heads that attach the crankshaft bearing cap to the block. I replaced the seal and the o-ring on the crankshaft head assembly but that did not fix it and no sign of fuel leaking from top side and running down.
As a test I cleaned all the leaking fuel so everything would be dry and clean; then I connected the fuel line and gave the bulb a few good pumps to fill the carb's with fuel and just let it set to see if fuel would leak. No sign of a leak after sitting for 1 hour with pressure on the primer bulb, then I turned the engine several times by hand and let it sit another 1 hour still no leaks. After that I started it up with the ear muffs on and let it idle for three minutes then shut it down and watched for a leak, within a few seconds fuel began leaking from around the flange of the crankshaft bearing cap. I have isolated where the leak is coming from but I don't have any idea as to how to fix it. Again I have already replaced the seal and the o-ring on the crankshaft bearing cap in an effort to correct the leak. Any advice and help would be greatly appreciated.
I have checked all the fuel lines, carb's, intake gaskets etc but no sign of a leak. Engine runs great at idle and at WOT. The fuel drips from the bolt heads that attach the crankshaft bearing cap to the block. I replaced the seal and the o-ring on the crankshaft head assembly but that did not fix it and no sign of fuel leaking from top side and running down.
As a test I cleaned all the leaking fuel so everything would be dry and clean; then I connected the fuel line and gave the bulb a few good pumps to fill the carb's with fuel and just let it set to see if fuel would leak. No sign of a leak after sitting for 1 hour with pressure on the primer bulb, then I turned the engine several times by hand and let it sit another 1 hour still no leaks. After that I started it up with the ear muffs on and let it idle for three minutes then shut it down and watched for a leak, within a few seconds fuel began leaking from around the flange of the crankshaft bearing cap. I have isolated where the leak is coming from but I don't have any idea as to how to fix it. Again I have already replaced the seal and the o-ring on the crankshaft bearing cap in an effort to correct the leak. Any advice and help would be greatly appreciated.