Dellis
Registered user
So a long story short, the bike belong to a friend of mine packed in a few months ago and he hadn't given me the complete picture He had mis fuelled his van with petrol, pumped it out and used the 'petrol' to fill his 850, needless to say it didn't run very well anyway he sorted that and all was well until recently when if would only start with a bump so he packed the bike off to one of his pals to 'sort out' who claimed it was an HT lead then cobbled it back together, it was then delivered to me last weekend. Andy, the owner of the bike, assures me that when it went to his other pal it was sparking on both pots.
So yesterday I got it on the bench and no spark on either pot, tank off and the HT leads & feed to the coil were disconnected so I tested the coil, all was well, tested the HT leads and the right hand side is u/s. Looking at the way the bike had been cobbled back together, one of the fuel line QD snap connectors was broken which I've replaced, I suspect the HT lead fell victim to ham fisted removal from the plug. After refitting/reconnecting the coil and popping the fuel tank back on I cranked the bike with the injectors off the result was (obviously) no spark on the right pot, a feeble yellow spark on the left pot and no juice from the injectors. My conclusion is that the Hall sensor has failed but before I spend the neck end of a couple of hundred quid of his money on a replacement and ideas if it could potentially be something else. I did think of the Motronic but as the spark is so poor have ruled that out. Oh and the battery is good, newish, and fully charged.
Thoughts appreciated.
Dave
So yesterday I got it on the bench and no spark on either pot, tank off and the HT leads & feed to the coil were disconnected so I tested the coil, all was well, tested the HT leads and the right hand side is u/s. Looking at the way the bike had been cobbled back together, one of the fuel line QD snap connectors was broken which I've replaced, I suspect the HT lead fell victim to ham fisted removal from the plug. After refitting/reconnecting the coil and popping the fuel tank back on I cranked the bike with the injectors off the result was (obviously) no spark on the right pot, a feeble yellow spark on the left pot and no juice from the injectors. My conclusion is that the Hall sensor has failed but before I spend the neck end of a couple of hundred quid of his money on a replacement and ideas if it could potentially be something else. I did think of the Motronic but as the spark is so poor have ruled that out. Oh and the battery is good, newish, and fully charged.
Thoughts appreciated.
Dave