project honda trx125

FIRSTResponder · #1 05-09-2011, 08:09 PM

Hi,
I'm new here...
And working on my 86 TRX 125,
when i switch it on with the batt. charged and pull the cord my volt meter reads juice to the spark plug, but the plug is not sparking, i just gapped it so any ideas?

Here 2 help · #2 05-10-2011, 01:39 AM

You should not be able to "read juice to the spark plug". It should be a 35,000 to 45,000 volt pulse about 1/1000 of a second duration. You need to use an oscilloscope to see the pulse and measure the voltage. The fact that you read something means the system has some functional parts. Are you using a new plug to test for spark?

FIRSTResponder · #3 05-10-2011, 05:45 PM

Well i have a volt meter and i hooked it to the plug wire and pulled the cord and it read some juice i cannot get an exact because it is a cheep one but there was some juice

FIRSTResponder · #4 05-10-2011, 05:45 PM

Ah, No i am not... I do not have one i have the orignal one that was on there when i got the TRX

FIRSTResponder · #5 05-10-2011, 05:47 PM

and does any body have a pic of the air cleaner assembly mine has none,
(Probably should fix that eh?)

project honda trx125

trx125 one spark pulse