QD 14, no spark on one cylinder

H

Haus

Seaman Apprentice
Joined
Apr 27, 2012
Messages
32
Im trying to get this old motor to start, and i dont have any spark on the upper cylender. it has new plugs J6C and what appears to be original wires. i removed the flywheel, and the coils have been replaced along with what i assume the points and condensor by the previous owner about 15+ yrs ago. the points gap is at .020. the motor has been sitting dormant for the 15yrs that i have owned it. i trimmed back the plug wire at the upper coil and same results.

any suggestions?
 
B

Blacksting

Petty Officer 1st Class
Joined
Aug 15, 2011
Messages
213
Re: QD 14, no spark on one cylinder

change both those wires. probably shorting out threw cracks in the insolation . make sure you use , copper stranded , not carbon .
 
A

AlTn

Commander
Joined
Mar 9, 2010
Messages
2,813
Re: QD 14, no spark on one cylinder

under the sticky...Top Secret Files..scroll down to Universal Magneto Troubleshooting as the info there will help you...as you probably know the front coil < closest to carb > is for the top cylinder...you may only need to clean that set of points really well and regap..if the plugwires are original, you'd be well served to go ahead and replace them now...7mm solid core copper...~ $2 a ft., or less, from the dealer...a little lube on the wires enables them to slide by one another more easily when inserting them through the hold down clamps under the armature plate...no need to completely remove the clamps, just loosen them enough so you can remove and reinstall the wires
 
jmendoza

jmendoza

Petty Officer 1st Class
Joined
Jun 9, 2008
Messages
314
Re: QD 14, no spark on one cylinder

Clean the points with a piece of clean card stock, or a business card dipped in unleaded gasoline ( not pre-mix!) They get surface corrosion on them if left sitting for years.
 
H

Haus

Seaman Apprentice
Joined
Apr 27, 2012
Messages
32
Re: QD 14, no spark on one cylinder

well, copper core plug wires are hard to come by, so they are getting changed when i find some. i picked up a spark gap tester and found out i am getting spark on the upper. i cleaned the points with gas, sprayed gas into the cylenders, and she fired up. unfortunalty it didnt stay running, seems like im having a fuel delivery issue. time to look into the carb..... any ideas on this obsolete carb?
 
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