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Yamaha yzfr125 runs fine goes about 10 miles and then burns out electrode on spark plug

131 Views 1 Reply 2 Participants Last post by  NorthCust
Hi, I have recently changed my coil pack and spark plug. After changing it was ok for a day or two and then was going along and loss of power. Come up to roundabout and the bike died. Got it back and took our spark plug and the electrode has burnt out. I changed the coil pack 3 times now with new plug each time to no avail and it still the same issue! HELP! Thanks in advance
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can you post a pic of the spark plug? .. ideally 3/4 sorta view looking somewhat into the gap around the electrode.. ideally want to be able to see the outside around the electrode and a little inside the cavity.. the colour of the plug/residue etc may give some clue as to what's going on
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