1999 ZR 500efi
Running on one cylinder only.
Testing revels only shorter of two ignition wires producing spark. Grounding plug to engine head and pulling cord produces big fat spark on short wire and no spark on longer wire.
Measured resistance on both and shorter wire produces more ohms of resistance but I have a hard time interpreting the results. (Don’t know if it was a lot or a little.)
Took coil out of my sled and plugged into my Dad’s 97’ ZR580efi. Grounded plugs and pulled cord. Same result. Only shorter of two wires produces spark.
Questions:
1. Would it be safe to assume the coil is bad? Is it possible to test a coil any other way?
2. Do the plugs fire in a batch-fire? i.e. both plugs fire at the same time, each time?
3. I looked up the part numbers etc and it appears this is about $133 part. I’ve found quite a few on ebay including one from a 99 ZR 700. the part number is different but most of what I see out there looks the same. Even the ones labeled as “new style 800/900” say they fit older models. A coil is a coil basically, isn’t it? I’d figureanyhting 99’ and up should work as long as it’s from a ZR/ZL/Pantera- type twin, right?
Once again I plead for help…….
Joe
Running on one cylinder only.
Testing revels only shorter of two ignition wires producing spark. Grounding plug to engine head and pulling cord produces big fat spark on short wire and no spark on longer wire.
Measured resistance on both and shorter wire produces more ohms of resistance but I have a hard time interpreting the results. (Don’t know if it was a lot or a little.)
Took coil out of my sled and plugged into my Dad’s 97’ ZR580efi. Grounded plugs and pulled cord. Same result. Only shorter of two wires produces spark.
Questions:
1. Would it be safe to assume the coil is bad? Is it possible to test a coil any other way?
2. Do the plugs fire in a batch-fire? i.e. both plugs fire at the same time, each time?
3. I looked up the part numbers etc and it appears this is about $133 part. I’ve found quite a few on ebay including one from a 99 ZR 700. the part number is different but most of what I see out there looks the same. Even the ones labeled as “new style 800/900” say they fit older models. A coil is a coil basically, isn’t it? I’d figureanyhting 99’ and up should work as long as it’s from a ZR/ZL/Pantera- type twin, right?
Once again I plead for help…….
Joe