Going by the book I pulled the white/black idle stabilizer wire. Pulled all the plugs but #1 cylinder top starboard side, adjusted the idle stop screw as directed, hooked up the timing light and cranked it over....and the primary timing says 2 deg atdc. it's supposed to be 11 atdc.
Alright then I have a problem so I adjust the Primary pickup screw and best I can get is 9 atdc before the trigger runs out of adjustment.
I tried rigging up a dial indicator. I found TDC but then the manual says to turn the flywheel counter clockwise to 1/4 turn past the 0.462" mark. Then back to exactly 0.462" and set the pointer. I run out of stroke on the indicator when I get there. I have to turn the flywheel a long ways to get there.
This is what it's like in automotive terms. When I pull the distributor on a chevy and put it back in one tooth off I am unable to get the timing set due to running out of stroke for the advance. Now this has no distributor but I have had the flywheel off as well as the stator and the trigger but I'm pretty sure that it's all back how it belongs.
The motor runs fine WOT but chugs on idle. Hole shot is a little weak. I am simply trying to do a link & synk here but it's really got me confused.
I'm heading out now to set the idle with the muffs then off to the lake. I'll check the idle there while in gear. I'd had alot of electrical issue's with missfiring and such and have not changed the plugs untill now.
The flywheel does not have to be backed off a 1/4 turn, but it MUST BE backed off at least .500 so any possible slack in piston/rod/crank is taken out before coming up to the .462 where you set the timing indicator.
If you have a two piece flywheel it is possible that the hub and outer and not in sync, which is another reason setting the .462 point is critical. When the dial indicator is at .462 and the outer flywheel is way off, you will have to unbolt the hub and re-index the outer to properly align the .462 mark.
Found TDC then backed off ccl past 0.462" then came back up on it and pulled off the flywheel cover. I'm 180 deg off from the 0.462" mark so I unbolted the hub moved it 180deg's. Put the cover back in place. Reset the 0.462" from TDC and now the pointer is about 1/4" away from 0.462".
Now I'm off to readjust the pointer so that it's inline with the 0.462" on the flywheel and then to recheck the timing......fingers are crossed.
Back from the lake. Still chugs at idle but only after it's warmed up.
Here's something interesting. I pulled the covers to check for miss firing and while I had it opened up it ran fine, in gear, in neutral and had a great hole shot. After I put the covers back in place it mysteriously started chugging again.
I noticed alot of exhaust around the engine...I think it's getting inside the covers and choking out the carbs.
Anybody else experience this? How can I keep good air at the carbs at all times?
Took the covers off this morning and made a discovery.
This boat and motor has been resurrected after 6 years of neglect. Mice have had their way with it. I found they had chewed through the cowl gasket on the starboard side just under and behind the carbs intake. I believe this is allowing exhaust into the cowl area causing poor idle and bad hole shot.