SV1000 knocking at low revs.

its not the thou clutch knock which is infamous
there has been a mass reduction on power
its drinking fuel (i think) also stinks of fuel at lights after 5 mins
it clears up after 4000rpm
throttle bodies have been changed and injectors
water/coolant checked
oil checked
ht leads and plugs changed
ecu switched betwen 2 differnt ones no change
no f1 light
but after engine kill switch used or stand safety switch to kill engine, it doesnt reboot/fuel prime when switch /stand is but back to correct position

this is doing my bap in people, to the point im ripping the bike apart, just wondering if anyone has a answer before i bin the engine

[Bibio]

could be drawing air from somewhere like the vacuum blanks on the TB's or one of the PAIR hoses has come/coming loose. might also be a dodgy connection somewhere like the sidestand switch.

Join the SV1000 forum at http://www.sv-portal.com/ and see if anyone on there has any ideas.

HTH

on the portal mate cheers

bibio, why would the side stand switch effect normal running, on start yes i get it but it does it in all gears

[Bibio]

as when you put it into any gear with the side stand down it shuts power. so a dodgy intermittent switch might cause it to go on and off like turning a light switch on and off very very fast.

as i said it could be a dodgy connection not necessary the side stand switch. you said (but after engine kill switch used or stand safety switch to kill engine, it doesnt reboot/fuel prime when switch /stand is but back to correct position) which to me sounds like it's electrical.

[Red Herring]

Could it be something like a dodgy sensor. The ECU thinks the bike is cold and is keeping it in effect in "choke" mode making it very rich at low revs and not advancing the ignition at higher revs?

[Bibio]

i had the same thought about the TPS but not sure it would effect the safety cut system/pump. unless the pump is working then it could well be a dodgy or loose connector on TPS/STPS/STVA.

Have you put it in dealer mode to check the diagnostics?

Originally Posted by Bibio

as when you put it into any gear with the side stand down it shuts power. so a dodgy intermittent switch might cause it to go on and off like turning a light switch on and off very very fast.

as i said it could be a dodgy connection not necessary the side stand switch. you said (but after engine kill switch used or stand safety switch to kill engine, it doesnt reboot/fuel prime when switch /stand is but back to correct position) which to me sounds like it's electrical.

Chris8886 had just that on a trip to France. We couldn't get to the bottom of it. It was an overstretched side stand spring! Only at a certain speed would it bog down.

could sound weird but: do you have an alarm fitted? used to have the same problem and it was just the injector cut off function that kicked in from time to time even when the bike was running... it took 1 month to realize it (i checked EVERYTHING before...)