Strangest thing i ever did see. Still having engine problems with a cylinder.

[barnbiketom]

If he did them and 3 are ok, I would think he would have done them all he same way. I am waiting to see the results of the black out light show test.

This is true, altho i cleaned some and ended up with one idle circuit plugged, even after I verified it to be clean. them dam things!!!!!!
I'm always suspect of carbs i guess.....

[chuck hahn]

But the misting in a dark garage will tell if the WIRES themselves are arching to the grond of the frame or engine..thats the easiest and an important thing to rule out.

[chuck hahn]

Porbably should ask him if that particular plug is getting wet from fuel.

[sedelen]

Porbably should ask him if that particular plug is getting wet from fuel.

He could swap the plugs too, but I'd do it from a cylinder that he didn't have any problems with like 1 or 4, and see if the problems stays or follows the plug.

[chuck hahn]

thats another thing to do....its kinda like a shell game and see what developes...or doesnt..LOL

[stoy75]

Ok a few answers.

Carb cleaning was complete tear down, soaking, and all new o rings and float needles.

Carbs were balanced twice. Just to be sure.

Soaked engine with lights out. No visible spark or arcing.

Never had a coil arc.

Swapped all plugs around. No change.

Something I noticed in the process of light show.... Can feel vibration in coil for 1 and 4. Don't feel that in coil for 2 and 3. Or at least not as pronounced.

[sedelen]

Ok a few answers.

Carb cleaning was complete tear down, soaking, and all new o rings and float needles.

Carbs were balanced twice. Just to be sure.

Soaked engine with lights out. No visible spark or arcing.

Never had a coil arc.

Swapped all plugs around. No change.

Something I noticed in the process of light show.... Can feel vibration in coil for 1 and 4. Don't feel that in coil for 2 and 3. Or at least not as pronounced.

Did you swap the plug wires though?

[chuck hahn]

I got a shock just today from a wire with the 77 750 running..which tells me its time to get some 7MM wires and out new leads on.

[chuck hahn]

May be an absolutely stupid question and not to embarass you, but did you bolt the slide to the throttle rod? I know..I know, but I did that once!!

[stoy75]

Ok so pulled plugs since it won't make noise and little bear is now asleep. Plug #2 is soaked and fouled black. Acting just like #3 used to because it used to do that. Can't swap wires and run bike till tomorrow.

[stoy75]

Chuck how are you changing leads? Aftermarket coils?

[chuck hahn]

No...If you look where the leads go in the coil you see they are epoxied in. Inside the coil ( down in the bottom of the hole ) is a pointed pin... like the screw thats on the caps.

I remove the epoxy and pull the wires out.

Then I use a dowel and stick it in till it hits the pin and make a mark. Tranfer that depth along the raised area on the coil body and make a cut with a dremal about 1MM short of the mark. Cut down the bumped sides that the wire goes in and make a window. Then I insert the new leads onto the pins and just use 5 minute epoxy and shape a new side to the coil ..I think you know what i mean. Can sand it to make it look nice and now you have new leads installed into the coils. Cut them to length at the plugs and put the caps on.

[stoy75]

Could it be that the coil is starting to fail which is why it switched cylinders?

[chuck hahn]

Dunno...Like i said they seem to work or not.

[tom203]

How about swapping coils and see if the problem moves to 1 and 4?