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| Pop, spit, bang parp . . . . xb9sx https://ukbeg.com/forum/viewtopic.php?f=8&t=21442 |
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| Author: | yawningcat [ 06 May 2016 08:46 ] |
| Post subject: | Pop, spit, bang parp . . . . xb9sx |
Hello all, More xb9sx troubles!! Between 2500rpm and 3500 rpm the buell burps, misses and is generally running like a potato - it shows no faults on ecmspy, ive done TPS reset that improves it for a mile or so and then it reverts back. Is it a faulty TPS or should I look elsewhere? Also are there any parts alternatives to the highly expensive Harley TPS replacement? Thanks in advance Jeni 
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| Author: | Nutah [ 06 May 2016 10:32 ] |
| Post subject: | Re: Pop, spit, bang parp . . . . xb9sx |
are the HT leads OK ? as they can rub through the insulation then short out |
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| Author: | yawningcat [ 06 May 2016 13:34 ] |
| Post subject: | Re: Pop, spit, bang parp . . . . xb9sx |
Brand new ht leads, all check out okay. 
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| Author: | Nutah [ 06 May 2016 17:07 ] |
| Post subject: | Re: Pop, spit, bang parp . . . . xb9sx |
OK after your bad stolen recovered experience is the wiring good around the ignition switch , & general head stock area ? another often overlooked issue can be bad or dirty earth connections ? are the kill switch connections good ? .. or maybe some one can lend you a TPS to try ? start with the easy (& cheap) fixes first good luck 
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| Author: | yawningcat [ 06 May 2016 19:09 ] |
| Post subject: | Re: Pop, spit, bang parp . . . . xb9sx |
Thanks for the ideas, all of the ignition is new as it was really wrecked after been stolen - it's so frustrating, I can feel it's so close to been lovely to ride apart from this annoying glitch. I replaced the tps about two years ago but still not convinced it's not that causing the hassle. I soooooo wish there was an easy answer, just want to ride it 
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| Author: | coco [ 06 May 2016 19:26 ] |
| Post subject: | Re: Pop, spit, bang parp . . . . xb9sx |
take a ride up to see maz , no brainer
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| Author: | brother in buells [ 06 May 2016 20:47 ] |
| Post subject: | Re: Pop, spit, bang parp . . . . xb9sx |
Is this happening when the engine is good hot ,or also when you just riding for a couple miles? The coil can play up when hot and on it's way out. And are the spark plugs capped correctly? |
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| Author: | brother in buells [ 06 May 2016 21:51 ] |
| Post subject: | Re: Pop, spit, bang parp . . . . xb9sx |
Btw you have some nice y**tube movies Your sx is a real adventure bike! |
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| Author: | yawningcat [ 06 May 2016 22:03 ] |
| Post subject: | Re: Pop, spit, bang parp . . . . xb9sx |
brother in buells wrote: Is this happening when the engine is good hot ,or also when you just riding for a couple miles? The coil can play up when hot and on it's way out. And are the spark plugs capped correctly? Plugs are fine too - Its happening through out, it seems too that when it does it, if i ease off the throttle and then slowly ease the throttle back on its not so bad. If I thought it would make it all the was to Maz, id happily take it - however im not sure it would !! Im sure with some shared knowledge, ecmspy and me being able to wield a spanner ill get there in the end!! |
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| Author: | brother in buells [ 06 May 2016 22:40 ] |
| Post subject: | Re: Pop, spit, bang parp . . . . xb9sx |
Did not read if you have had a look at the tps ,but have a good look at the wires that go into the tps. The wires can break easy when not ziptied properly. It is also a possibility that the tps is worn out! Have had it happen on a 5.9 cummins with the tps. (throttle position sensor) Put a new one on and problem was gone! The backing off throttle and ease again slowly sounds familiair. |
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| Author: | pash [ 07 May 2016 07:44 ] |
| Post subject: | Re: Pop, spit, bang parp . . . . xb9sx |
I would log some data and look at what the ECM thinks is being measured. |
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| Author: | brother in buells [ 07 May 2016 10:14 ] |
| Post subject: | Re: Pop, spit, bang parp . . . . xb9sx |
https://m.youtube.com/watch?v=Cr7SzqiGlE0 |
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| Author: | yawningcat [ 07 May 2016 19:44 ] |
| Post subject: | Re: Pop, spit, bang parp . . . . xb9sx |
That YouTube clip is a previous fault, now fixed - this is a new one 
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| Author: | barney [ 08 May 2016 20:52 ] |
| Post subject: | Re: Pop, spit, bang parp . . . . xb9sx |
yawningcat wrote: it shows no faults on ecmspy, ive done TPS reset that improves it for a mile or so and then it reverts back. Jeni pash wrote: I would log some data and look at what the ECM thinks is being measured.
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| Author: | yawningcat [ 09 May 2016 17:56 ] |
| Post subject: | Re: Pop, spit, bang parp . . . . xb9sx |
. . . . . . . and can anyone give me a clue what i should be looking at on 'the values' ???? 
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