New member needing advice
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I all, I am a new member and i have a 2004/05 DT re which has been stored for a few years and is now a non runner due to no spark. I have tested the coil and it is goosed. Are the cheap coils on E bay any good and are the so called racing coils which are supposed to provide a stronger spark worth the extra money.
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I all, I am a new member and i have a 2004/05 DT re which has been stored for a few years and is now a non runner due to no spark. I have tested the coil and it is goosed. Are the cheap coils on E bay any good and are the so called racing coils which are supposed to provide a stronger spark worth the extra money.
@JOHNES Welcome to the Forum buddy, unfortunately those aftermarket ignition coils cause all manner of problems on the DTR/DTRe. New genuine from Fowlers (or your nearest Yamaha stockist if you're not in the UK) is worth every penny.
Are you sure it's the actual coil that is causing the problem, or could it be the HT lead? They break own on DTRs causing this exact problem. The actual coil is very good quality so it's well worth fitting a new lead. On early DTRs you can cut off the very top of the coil's outer case where the lead pushes in with a junior hacksaw, pull out the old lead and solder the new one to the coil output for a really good connection. Then re-waterproof using Shoe Goo and electrical tape. Looks messy but no-one can see it under the tank, and you should notice a performance increase as the leads deteriorate over time. Much better option than just buying a new pattern coil as these often have different specs to OEM which can cause other issues. Fit a new NGK cap while you're there, try to get the type that's moulded into a single piece of rubber.
I had a high-rpm misfire once, after trying everything else we replaced the HT lead in the manner described above which took around 1 hour on a summer's day so the engine was neither stone cold nor up to operating temperature when I took it for a test ride. It wheelied out of the driveway without me even trying, and I couldn't believe how much better the performance was at all engine speeds. Made a big impression on me as I was 17 at the time and I'd spent practically a weekend trying to fix the bike and getting nowhere. -
JOHNES said:
HOTSHOT III thanks for the reply. I am pretty sure the coil is knackered. I tested it with the multimeter and got a reading of .0005 ohm on the primary and nothing at all on the secondary so I think the coil and the plug lead/cap are both knackered. There are a few little jobs that need doing but I do not want to spend money on them until I get it running. I am going to price one up at Fowlers as you suggested. The last time I started the bike it ran for about 20 minutes and was idling nicely as it always did then it cut out and would not start. I still had spark then. I took the carb off and cleaned it but did not find anything wrong and then the battery died and it has not been started since so I need a spark to see if the carb is ok. The bike has only done 11,300 miles and is in generally good order so I hope I can get it running again. I was planning to MOT the bike then sell it but I might change my mind and keep it. Just checked Fowlers but they are out of stock.
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