Home › Forum › Ask A Member › 1973 6Hp Evinrude Fisherman hard starting cold › Reply To: 1973 6Hp Evinrude Fisherman hard starting cold
Well, 98 seems okay, especially considering that Fleetwin’s problematic 6 hp had a reported compression of 75. I know, it might be a gauge difference, but hey, you’ve got more than him! If there is any problem at all, I would be thinking now about crank case pressure and/or crank case recirculation. I’m not sure how the 6’s recirculation works….the diagram almost appears like it has none, per se. I guess it still bugs me that the needle is 2 1/2 turns out and you are getting a blackened lower plug, but not on the top.But at some point, you may have to ship it and move on.
Yes, his compression seems much better than mine….My low readings are probably due to my snap on compression gage with the valve up by the gage, also affected by my low cranking speed sitting on my work stand with the recoil facing the wall….
I too suspected crankcase issues with my engine, especially since I had just rebuilt the powerhead, “assssumed” I had scrwed something up. I went through all the trouble of swapping my rebullt powerhead for a used one I bought on ebay…. My engine ran identically on both powerheads….Didn’t start real well, not a great idle (for a 6hp anyway), idle needle set out too far, stumbled on mid range acceleration, and lack of WOT power. I too pulled plug wires to check cylinder balance and found both cylinders seemed to be contributing equally.
We have suspected carb issues on my engine, but I am confined to quarters so haven’t had the chance to try another carb. Perhaps we both have similar carb issues….I looked for obvious errors in mag plate installation/advance on my engine, but found nothing obvious. .