I,m stumped

I will remove the coil and check mounts to engine also recheck wire to see if i somehow nicked it while installing coil.will also check valves.Keep ideas comming as i dreamed about that thing last night.Also i installed new plug in unit also.Thanks

Just for those asking didnt get a chance to mess with it till yesterday a bit.I removed flywheel again replacing key again and still no spark.I removed coil from my personal mower just to check if i had gotten a bad coil and nothing on that one either.I can deal with valve issue but can not figgure spark problem,compleatly stumped!Thats 3 coils i tried one brand new and 2 flywheel keys.Thanks

dawgpile said:

I would ask that you be a bit more specific now. Your initial post said intermittent spark. Then no spark. Which is it? IOW, does the first(original) coil produce intermittent spark, and the second(new) produce none?

Secondly, very specifically, how are you testing for spark? Tester? Plug against the head? Other? Have you replaced the plug with a brand new one(not another used one)? Can you snap a photo of the ignition coil on the engine and share with us? Other than the spark plug wire coming out of the coil, there are no other wires connected to the coil assembly, right?

Let us know!

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Ok guy answer to 1st ? about coil,orginal very intermittent spark[mabee see one every 2-3 pulls,after that i replaced flywheel key and brand new plug,allthou neighbor put brand new plug before me, Also disconnected kill switch wire that ran from coil to carb.housing for lack of better words.Removed kill swich wire completly from engine,tested,nothing.Replaced that coil with brand new coil,tested no spark.Since then i took coil of my personal mower that runs fine,still no spark at all.Icould believe 1 bad coil,but not three.Also recheck flywheel key and used feeler guages on flwheel to coil spaceing,gettin not one iota of spark.This thing has me compleaty baffeled.Short answer to other wire ?,yes all 3 coils i used had kill switch wire identical to orginal.I,m lost on this one and awaiting any ideas you may have.Oh and i,m using tester and it does work cause i tryed it twice todayThanks,Paul

30yearTech said:

Are you sure the new coils were mounted in the correct orientation (this side out, or cylinder side). The coils can be installed upside down and they will not work.

Make sure there is a good ground between engine block and coil laminations.

Make sure magnets on flywheel are good.

Good spark will almost be invisible, but you should be able to hear it "POP" when it jumps the gap on your tester.

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30 year tech,You just may be the man.When i bought coil,i gave the man at counter #,s from engine, he gave me what looked to be identical except the little tit[for lack of better words] was on oppisite side!I asked him about that and his words were turn it upside down ,it will work .I was going to make a new kill switch wire if it fires as it was now an inch short.Inever saw any writing on coil and didnt think about being turned wrong way as it fit both ways.I,ll try tomorrow and let you know.Thanks

aka rotten said:

30 year tech,you just may be the man.when i bought coil,i gave the man at counter #,s from engine, he gave me what looked to be identical except the little tit[for lack of better words] was on oppisite side!i asked him about that and his words were turn it upside down ,it will work .i was going to make a new kill switch wire if it fires as it was now an inch short.inever saw any writing on coil and didnt think about being turned wrong way as it fit both ways.i,ll try tomorrow and let you know.thanks

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30 year teck is the man,took shroud off again and checked coil,no markings whatso ever,turned it upside dowm and i have great fire,did valve job for gas spitting problem ,it now runs great!thanks to all who responded.[coil by the way made in argentina]recon we dont make anything here anymore,thanks again.