Re: Help troubleshoot my ’58 fisherman

Home Forum Ask A Member Help troubleshoot my ’58 fisherman Re: Help troubleshoot my ’58 fisherman


mrhtx21


Replies: 8
Topics: 7
#79139
quote fleetwin:

A little confused for sure…
Was there water inside the gearcase? If so, for how long? There is a pesky “shock absorber” spring inside the driveshaft that sometimes breaks or expands, especially when exposed to water. This forces the driveshaft upward so it rubs on the upper bushing/seal housing which puts a lot of drag on the engine. Oftentimes this will cause the engine to slowly stall out at high speeds, or maybe tough to pull over. Please do not take your gearcase apart based on my advice, this is just something to think about if the engine is exhibiting symptoms like I have described.
Sounds like you pulled the exhaust cover and cylinder head and found a lot of loose carbon. What kind of oil are you using, hopefully you are mixing at the prescribed ratio of 16:1. OK, you had a chance to peek at the cylinders and piston skirts, did everything look OK? No scored/scuffed pistons or cylinder walls? I think you said that you made your own exhaust cover gasket. If so, I hope everything is sealed properly so water is not being sprayed into the cylinders.
It sounds like you converted to a single line tank with a fuel pump. You messed with the intake manifold also, I suspect the fuel pump might be leaking into one of the cylinders or you didn’t set up the intake manifold properly.
Don’t know what to tell you about the engine not shifting properly. Did you have the powerhead/gearcase off? If not, you couldn’t have messed up the shift system much. Don’t continue to run the engine if it is not shifting properly, this will damage the clutch dog and forward gear lugs.
One final thought……Did you remove that phillips screw down near the gear lube drain/fill screw? If you did, you messed up the shift linkage inside the gearcase which may require disassembly to get it back together properly again….

Had already replaced shosk absorber so im good there using tw3 but im running 24:1cylinders looked great other than the carbon on tops and didnt take off powerhead or mess with the phillips head screw of death lol