Timing question. 1966 18 hp Evinrude.

[steviecops]

Re: Timing question. 1966 18 hp Evinrude.

It sounds like I could have a few little problems all amounting to one big one!<br /><br />I won't mess around, I'll just fit the new carb and fuel pump kits. At least I'll know that they are both O.K.<br /><br />I'll also do Joe's fix for the wobbly armature plate. G DANE, Is it the brass support ring that has to be indented? I see that you also fitted some thin brass around the boss. What part excatly is the boss? I've ordered two new condensors along with the fuel kits, as they are the only ignition parts that I didn't replace when I was fixing this motor up.<br /><br />If this motor runs as good as it did yesterday, with issues!, I can't wait to see how great it runs when it is completely fixed!<br /><br />Thanks<br />Steve

 

[Paul Moir]

Re: Timing question. 1966 18 hp Evinrude.

Not GDANE, but yes, it's the brass ring you dent up. If you dent it up too much then the armature plate will stick and the spring won't push it right. If that happens, just take it off and tap it back flat again. Usually you don't have to indent it much.<br /><br />I once fixed that problem by grinding down the ridge on the armature plate that the part underneath the brass ring seats against. It was a huge amount of work. Now I follow Joe Reeves method. It makes a world of difference as far as the clacking and clanging goes.

 

[steviecops]

Re: Timing question. 1966 18 hp Evinrude.

Thanks Paul, that's something I can be doing until my other parts arrive.

 

[Dhadley]

Re: Timing question. 1966 18 hp Evinrude.

A "dry and sooty" plug is also a symptom of that cylinder sucking air. Which would tie in with the "sneezing" deal.

 

[steviecops]

Re: Timing question. 1966 18 hp Evinrude.

My parts came today, so I rebuilt the carb and fuel pump. The diaphram in the pump looked in good shape, which was a bit dissapointing, so I'll have to start looking elsewhere for the problem. <br /><br />I did the fix on the wobbly armature plate though and it worked great ;o) Also fitted the two new condensors and checked the points gaps again. There wasn't the slightest sign of any fuel or oil under the plate or flywheel, so I'm assuming that the top seal is O.K. Even the seal itself was dry.<br /><br />I haven't got everything back together yet, so I wanted to ask a few questions while it's still in bits. I noticed that one edge of the gasket on the lower bypass cover is pretty wet and oily. Could this be a source of a leak, and would it cause the symptoms that I've got? Should I take them both off and make new gaskets for them before refitting the fuel pump?<br /><br />Also, should I take the manifold off and check the reeds while I'm about it, or would that cause more trouble? I've shone a light in there and it all looks clean and tidy. The reeds seem to be seated O.K.<br /><br />I hope to have it all back together sometime tomorrow, so I'll let you know how I get on.<br /><br />Thanks.<br />Steve

 

[G DANE]

Re: Timing question. 1966 18 hp Evinrude.

If the upper seal leaks, there will be a lot of oil shooting out. Bypass covers shouldnt leak at all, but the lower one was the richest, wasnt it ?. Did you test the spark with a 5/16" gap ? Reed failures are rare, and can be seen thru manifold, probably no problem there. Was the small leaf on the valve for the recirculation hose in place ? ( dont remember if those had this hose from intake housing to the one bypass cover, and the hose connecting upper and lower main bearing on, but if it has, are they in place ? ) ?Just retighten manifold a bit, It doesnt have to leak oil there, if the reeds are tight against block and leak is on the outside.

 

[steviecops]

Re: Timing question. 1966 18 hp Evinrude.

Well I got everything back together and the engine seems to be fine now. Started on the 3rd pull and idled well with the roller off the cam.<br /><br />I'm sorry, but I can't pinpoint what the fix was as I did several things. New carb kit, new fuel pump kit, new condensors and fixed the wobbly armature plate.<br /><br />If I had to guess what made the difference I'd have to say the condensors. The carb was already spotless inside as I'd cleaned it thoroughly and the gaskets inside weren't too bad. The fuel pump diaphram and gaskets all looked in good shape, so I don't think the new kit would have made that much difference. The armature plate wasn't that wobbly, justy a slight wobble.<br /><br />Although I was getting a very good spark pulling the engine over by hand, maybe the spark was breaking down when the engine was running? I had one sooty plug and one wet oily one, so something different was happening between cylinders. Maybe the oily plug was the one which was breaking down and the sooty one was caused by my trying to adjust the needle to keep the engine running with a dodgy spark?<br /><br />Either way, both plugs looked the same when I took them out after running the engine today. Both slightly oily, but nothing excessive and no soot. I'll try it again tomorrow just to make sure everything is still O.K.<br /><br />Thanks for all the help.<br />Steve

 

[G DANE]

Re: Timing question. 1966 18 hp Evinrude.

My vote goes to the condenser, good you got it fixed.

 

[OBJ]

Re: Timing question. 1966 18 hp Evinrude.

Either the condenser or wobbly armature plate....either way...good fix Steve. And thanks for keeping us up to date with the fix(s)....