1989 Yamaha FZX 750 Logo
Posted on Feb 11, 2011
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How do you check to see if the cdi unit is working right on a fzx750.

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maurice44o4

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  • Expert 74 Answers
  • Posted on Jan 27, 2012
maurice44o4
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Joined: Jan 26, 2012
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You will need to have it checked by local deal no easy fix to test your self

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Yamaha G1 Golf cart...Engine does not crank when key is on and gas pedal is depressed... suggestion??.. I've heard that the CDI might be the issue...Discontinued part?

cranking is turning over which indicates that the battery and starter is doing the job
cranking but not firing indicates ignition or fuel problems
now that you have the correct terminology perhaps you can get an answer
first test is to pull a plug ground it out or use a spark plug tester crank it over to see if there is spark
Good spark forget CDI and coil so look at fuel
NO spark indicated , check for 12 volts from the ignition switch on the start circuit
Ignition switches have to power wires to the coil
on gives power when cranking and the other continues power when the starter is nor engaged
power in both positions move on to next check
no power from the switch to the coil when cranking --get new switch next check if both wires have 12 volts is the ignition circuit
check for safety micro switches not working right up to the CDI
power to the CDI but no spark --replace cdi
power from the cdi nut still no spark --replace the coil
AS to not available
check after marker as the units are generic and made by electronic companies not golf cart manufacturers so it is a distinct possibility that a cdi from some where else will fit
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