Hello, I’m having a no spark issue and currently testing the grounds to find the issue, in the image attached I’m not sure if this is a ground or if I’m using my multimeter wrong I’ve got it on continuity and black on battery. The wire in the image reads OL is this a ground i that is stopping my plugs from sparking. I’ve tested the entire coil and it has resistance and pretty much new I also just got a new mpem.black wire coming out of the plug.
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Bad ground?
- Thread starter Lau
- Start date
Hello, I’m having a no spark issue and currently testing the grounds to find the issue, in the image attached I’m not sure if this is a ground or if I’m using my multimeter wrong I’ve got it on continuity and black on battery. The wire in the image reads OL is this a ground i that is stopping my plugs from sparking. I’ve tested the entire coil and it has resistance and pretty much new I also just got a new mpem.black wire coming out of the plug.
artr
Well-Known Member
It is hard to tell from your picture what wire you are measuring. When a multimesir is measuring continuity and shows OL (open line) that means it is infinite resistance which is an open line. The meter would probably admit a beep or an audible tone if there was continuity between the 2 lines that you were measuring. It might be best if you downloaded the shop manual for your ski and looked at the schematic that would show the wires and their color coding and connections. Ground wires are typically solid black in color. The solid black wire coming from the connector you are holding has a ring on its end that is not connected to anything.
Hello sorry for the confusion the black wire is one from the rear e box and connects to the bottom of the coil with 2 other grounds. This jetski is a gtx1997 787
artr
Well-Known Member
One of the most common problems for a no spark condition on a 96-97 GTX is that there are 2 ground wires connected to battery negative, a large black cable and a small black wire. The small black wire goes to the rear e box to provide ground to the coil (as you mentioned above) and the start solenoid. Make sure those connections are clean and tight as well as the bolt at the base of the coil. Check continuity between battery negative and the bolt at the base of the coil. If still no spark check coil according to the shop manual. I have read where you can check the CDI output of the MPEM by connecting a 12V test light to the MPEM input to the coil (I think it is a white wire) and the other end of the test light to ground. It should blink when cranking. There are also tests in the shop manual for the trigger coil input into the MPEM.
The grounds are good just check them what else could the issue be and how do I check it?
artr
Well-Known Member
If still no spark check coil according to the shop manual. I have read where you can check the CDI output of the MPEM by connecting a 12V test light to the MPEM input to the coil (I think it is a white wire) and the other end of the test light to ground. It should blink when cranking. There are also tests in the shop manual for the trigger coil input into the MPEM.
Can download shop manual at seadoomanuals.net
Can download shop manual at seadoomanuals.net
