Calling all Suzuki techs!!!

Texas4x4

Cadet
Joined
Apr 15, 2010
Messages
10
im working on a 1983 DT50 it has no spark but engine turns over well.

the engine ran great with no problems then the next day it dropped spark it literally ran great one day was put on the trailer taken home then right back to the water the next and no spark!!??

I have checked the rectifier with a DVOM diode check and it checks out fine.
pulled the flywheel checked lighting coil, trigger coils (2), and the "primary" coil all have no short to ground and resitance in spec. according to manual.

my question is which wire provides power to these coils im only getting voltage into the coils from the red wire going to the lighting coil. and NO power coming out anywhere.

Also im getting power through the white wire at the ignition switch but no power out except through the choke wires??? Any advise?

can you help me out on what actually sends the signal/provides the power to the coils.

there are two separate coils one for each cylinder and neither shows power at any time where is there power coming from???
 

stylesabu

Master Chief Petty Officer
Joined
Aug 2, 2009
Messages
849
Re: Calling all Suzuki techs!!!

sounds like your kill switch is open.
 

Texas4x4

Cadet
Joined
Apr 15, 2010
Messages
10
Re: Calling all Suzuki techs!!!

yes i looked at it also seems to have continuity in the closed position (lanyard pulled out) is the kill on the ground side of the circuit if so couldn't i just bypass it with a jumper wire?
 

99yam40

Fleet Admiral
Joined
Sep 7, 2008
Messages
9,127
Re: Calling all Suzuki techs!!!

I am used to Yamaha , never worked on that old of a Suzuki
I thought the kill switch grounded the out put of the CDI to stop the spark voltage to coils.
This is assuming this motor is CDI, but maybe this motor is before that system.
lighting coil is the battery charging voltage coil
Charge coil is for charging up the capacitors for spark
pulsar coil tells when to fire the plug
 

Texas4x4

Cadet
Joined
Apr 15, 2010
Messages
10
Re: Calling all Suzuki techs!!!

Solved it was the kill switch and im embarressed to say it was not a faulty switch it simply didn't have a lanyard in it!!!! It is my bro-in-laws boat and my brothers prior to that we never used the kill lanyard. The lanyard was tied to the shift cable with a string. upon futher inspection the string and kill lanyard are no where to be found???? lost, stolen, misplaced or hang from a tree some where on the road the the lake :)

oh well lots of practice with the DVOM and plenty of study time on the wiring diagram can't ever be a bad thing.

thanks iboats
 
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