55hp Chrysler no spark

[Chrysler558]

Have a 55hp 1974 model 558HD with no spark. The magnapower unit has a live feed and a earth, should there be a live feed out of the magna power unit? The motor spins over no problem any suggestions on how to test this unit most welcome or if there is a common electrical fault with these motors?

 

[eurolarva]

Re: 55hp Chrysler no spark

When you test for spark are you pulling the plugs and then grounding the threads to the motor ground? Also the test should be in a dark area to see the spark. If you dont ground the spark plug you will not see a spark.

 

[Chrysler558]

Re: 55hp Chrysler no spark

Yes I have earthed plug to the power head and also checked in the dark...no spark?

 

[eurolarva]

Re: 55hp Chrysler no spark

Chances are that if you have no spark to either unit that the coils are probably okay. I would suspect the cd unit has failed. The brown and brown/white wires should be the power going into the cd unit and white and gray wires should be the output from the cd. I hope someone will chime in here that has better experience doing electrical troubleshooting. I believe you need a DVA tester to test the CD unit.

 

[Chrysler558]

Re: 55hp Chrysler no spark

Thanks for the info...shall test the unit to see if there is any output at all...I presume there will be some kind of tollerance for this..<br /><br />Think I will a manual to test

 

[medunwoody@aol.com]

Re: 55hp Chrysler no spark

What did you find out? I have the same problem and am not making much progress.<br />Thanks,