With much help from people on this site I rebuilt a 68 Evinrude a few weeks back. Since then I've had asporadic performance.
1) Whenever I get the low speed screws set and put the carb covers back on, the engine will not run wot. The cover appears to pinch the fuel line when I tighten it up. Remove the cover and problem is gone. I'm thinking about a bendable break-line routed behind the cover to prevent pinching. Any thoughts on why this is happening and what I can do about it.
2) Few days ago I couldn't get the engine to go from idle to wot without a slow transition. Drove me crazy and I tried playing with the low idle settings again but no luck. The next night I ran it on muffs and pulled each of the 3 plugs one at a time. When I pulled the bottom plug, spark was arching from up near the distributor to the fly wheel (and no change in the way the engine ran). Assumed that was bad and fixed the lead.
The net, I've probably had the low idle settings right 1/2 dozen times but whenever I have an issue I let myself get sucked into messing with them again. Yesterday I took it out and had the idle to wot issue again. If I hit the throttle the engine would just die. So I increased throttle until it started to gasp and toggled the choke a few times. The engine caught and for as long as I ran it above ~1/4 throttle it purred like a kitten. Does this sound like low idle screws are now to lean?
1) Whenever I get the low speed screws set and put the carb covers back on, the engine will not run wot. The cover appears to pinch the fuel line when I tighten it up. Remove the cover and problem is gone. I'm thinking about a bendable break-line routed behind the cover to prevent pinching. Any thoughts on why this is happening and what I can do about it.
2) Few days ago I couldn't get the engine to go from idle to wot without a slow transition. Drove me crazy and I tried playing with the low idle settings again but no luck. The next night I ran it on muffs and pulled each of the 3 plugs one at a time. When I pulled the bottom plug, spark was arching from up near the distributor to the fly wheel (and no change in the way the engine ran). Assumed that was bad and fixed the lead.
The net, I've probably had the low idle settings right 1/2 dozen times but whenever I have an issue I let myself get sucked into messing with them again. Yesterday I took it out and had the idle to wot issue again. If I hit the throttle the engine would just die. So I increased throttle until it started to gasp and toggled the choke a few times. The engine caught and for as long as I ran it above ~1/4 throttle it purred like a kitten. Does this sound like low idle screws are now to lean?