SheezFast02 Posted February 26, 2011 Report Share Posted February 26, 2011 Hey guys. I just bought a used coil from a BHQ member and I'm still not getting spark. I took the coil to my brother in-law, who is an electrician to test it and we're not getting readings. Am I testing it wrong? Does it need to be hooked up to the bike and with the ohm meter probes plugged into both spark plug wires? We tested it by itself, off the bike. The only reading we got was when he touched the meter to one of the tabs sticking off the coil and got a reading of 2.3 ohms. I'm stumped. I was going to try sanding the frame where the coil mounts up, but I'm not getting a reading from both plug wires. I'd appreciate any help you can offer. I've been outside screwing around with this thing in -10C and it's snowing. This is a major pain in the ass. Thanks in advance Quote Link to comment Share on other sites More sharing options...
SheezFast02 Posted February 26, 2011 Author Report Share Posted February 26, 2011 Just got back from having the coil tested again, and this time with the wires unplugged. Still no reading at all. I've read alot of people saying the coils themselves very rarely go bad, but it appears to me this is one is dead. Can someone please chime in here with any help? I'm really frustrated with this whole thing. Quote Link to comment Share on other sites More sharing options...
gstaten24 Posted February 26, 2011 Report Share Posted February 26, 2011 Ibsen havin the same issue lately, first to check the primary of the coil touch the negative lead to the tab the black wire was on, the positive lead on the tab the orange wire was on reading should be between .28 and .38 ohms. To test the secondary put the negative lead on the black wire tab and the positive on the end of one of the plug wires. Also make sure the plug caps are making good contact, I've had an issue with that before Quote Link to comment Share on other sites More sharing options...
zr2highrider Posted February 26, 2011 Report Share Posted February 26, 2011 Also make sure its not your CDI that went bad. I had the same issues when my banshee wasnt getting spark. Tested the coil and I got nothing. Bought a new coil of e-bay, put it on and nothing. Turns out it was my cdi. Lucky, I had a friend who had a banshee at the time and just started swapping parts; coil and still got no spark. When I swapped the CDI it ran like a champ. Quote Link to comment Share on other sites More sharing options...
Starwriter Posted February 26, 2011 Report Share Posted February 26, 2011 spec for the secondary coil resistance is 4,700 to 7,100 ohms Quote Link to comment Share on other sites More sharing options...
SheezFast02 Posted February 26, 2011 Author Report Share Posted February 26, 2011 Thanks for your reply. I believe the test method you're describing is the way it says to test in the manual, but, it's since been proved to be an inaccurate way to get good readings. I did get a reading from that method, however is was like 2.3 ohms... Very strange.. Then I decided I'd test the popular way, by going lead to lead directly at the coil, and this yielded no results. I really don't want to have to buy a brand new coil from the dealer just to be sure I'm getting one that works. This is ridiculous. Thanks again, gstaten24, for taking the time to help. Quote Link to comment Share on other sites More sharing options...
gstaten24 Posted February 26, 2011 Report Share Posted February 26, 2011 spec for the secondary coil resistance is 4,700 to 7,100 ohms Oh yea sorry bout that forgot that little piece of knowledge haha Quote Link to comment Share on other sites More sharing options...
SheezFast02 Posted February 26, 2011 Author Report Share Posted February 26, 2011 Also make sure its not your CDI that went bad. I had the same issues when my banshee wasnt getting spark. Tested the coil and I got nothing. Bought a new coil of e-bay, put it on and nothing. Turns out it was my cdi. Lucky, I had a friend who had a banshee at the time and just started swapping parts; coil and still got no spark. When I swapped the CDI it ran like a champ. I see what you're saying, but if the coil is fine, I should be getting a reading. The old coil and the one I just recieved both don't even put a number on the meter. And that's using a high-end auto ranging meter and testing directly at the coil. Thanks for your replies. Keep em coming. Quote Link to comment Share on other sites More sharing options...
SheezFast02 Posted February 27, 2011 Author Report Share Posted February 27, 2011 One last question, just so I'm sure I've tested correctly. When testing the primary, does the coil need to be mounted to the frame and with the + and - connections hooked up? I've been testing the primary on the tabele with nothing hooked up. Poking the leads into both the plug wire inlets directly at the coil. I just want to be extra sure before I send this coil back. Please help! Quote Link to comment Share on other sites More sharing options...
gstaten24 Posted February 27, 2011 Report Share Posted February 27, 2011 I had it on the frame and the wires not hooked up n it tested fine. I know I've takin it to a shop to have it tested before and they don't hook it up to anything so you should be good. Quote Link to comment Share on other sites More sharing options...
SheezFast02 Posted February 28, 2011 Author Report Share Posted February 28, 2011 That's what I figured. It's so weird that my old coil is totally shot and getting no readings from cap to cap, and this one I just got is showing nothing. Thanks again man. Looks like I need a new one. Quote Link to comment Share on other sites More sharing options...
Starwriter Posted February 28, 2011 Report Share Posted February 28, 2011 I just tested mine and it tests open secondary, and I took it off a running bike. Not sure what's up with that. So, don't be too quick to condemn the coil. Quote Link to comment Share on other sites More sharing options...
SheezFast02 Posted February 28, 2011 Author Report Share Posted February 28, 2011 Shit! So you're testing plug wire to plug wire and getting 00000 for a reading? I don't see how that's possible with a coil that's any good. Anyone want to post up with their current reading and specific method of testing? Thanks Quote Link to comment Share on other sites More sharing options...
Starwriter Posted February 28, 2011 Report Share Posted February 28, 2011 Well, the plot thickens. I took the plug wires out and took 1 cap off the end of the wire. The wires are stranded copper, so they're 0 ohms. The caps have 5K ohms and 6K ohms. But the secondary in the coil shows open, no matter if you measure plug wire terminal to plug wire terminal, or plug wire terminal to either primary terminal. But I ran the bike myself. ????? Quote Link to comment Share on other sites More sharing options...
SheezFast02 Posted February 28, 2011 Author Report Share Posted February 28, 2011 Strange.. Correct me if I'm wrong, but are you saying that your bike runs fine, yet you're getting bad readings from your primary? I've just decided to keep the new coil. I'm thinking that either I'm doing something wrong or the coils somehow fail to give a reading sometimes. This has me stumped. Quote Link to comment Share on other sites More sharing options...
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