Miss fire that clears at higher revs

[Mister Fishfinger]

The strange thing is ive just service the tiger and the bloody thing did the same started running lumpy on the bottom  , but the tiger has a 12 minute tune you can do and the ECU will retune its self at the lower end of the rpm range ... did that and it's perfect now .
But its got me thinking about the o2 sensor on the 14 and weather its faulty or dirty ?

Correct me if I'm wrong but I don't think the 14 has an O2 sensor. That's maybe one of the reasons they had to stop selling it when the tougher emission rules came in.

[Latty66]

I would suggest unpluging the rectifier socket and checking the connetions usually the red ones rotton you may have to unbolt it from its handly placed position to inspect it

Also the spark plugs are CR8EK as standard . You can use CR7EK if the plugs are apt to get wet or CR9EK if they over heat

I allways remove alarms there just real hack jobs when fitted butchered in and the cause of many a electrical gremlin

[Latty66]

The young lad round the corner from me his 14 started with this problem so he brought it round and we went through all the usual testing first then we started swapping things over coils throttle bodeis tank sensors the lot when it came to the rectifier we unplgged it and a small puff of corrosive dust waffted out as it came off looked in the socket and oh dear we managed to clean it up with a womans sandy nail file we then checked it with the amp meter wich gave average to low readings a new rectifier was fitted and these arnt cheap but it sorted out his banging and farting about

[shanered6]

Well been through the entire wiring loom and every socket and no differance so thats eliminated them so now its time to start on plugs first and see if i can see any clues there , but i think it is definatly running rich as it gives of a slight amount of black smoke especially when cold .

[shanered6]

well an update !  checked all the harness plugs , changed clutch switch , done the pairs mod , checked coils seem ok , also checked the error codes in dealer mode and its clear ! so had plugs out and they look realy good with a nice tan and had pump out and claened .... bloody diffrance 
Im starting to lean towards the throtle posision sensors but it"s driving me mad it can be perfect for a mile then crap for 10 then mint for 3 and then it can just stall out at a junction after popping and banging and then pull away perfect !!!! my ed is dun in  .

[KiwiCol]

Just to confuse things more, have you(or previous owner) got a TRE fitted or done the timing advance mod to the backplate?   Popping & banging is fuel & timing, imo.

[Andre]

Gotto hate those intermittent problems.

Thinking of broken wire. Would check to see if anything looks suspicious, pinched or loose.

Just a word on dealer diagnostic mode. Codes will only show when there is an active fault ( FI light on). Codes are not stored. Leave it in dealer mode while you ride and take a look at the display when it is acting up again.

[Mick_J]

well an update !  checked all the harness plugs , changed clutch switch , done the pairs mod , checked coils seem ok , also checked the error codes in dealer mode and its clear ! so had plugs out and they look realy good with a nice tan and had pump out and claened .... bloody diffrance 
Im starting to lean towards the throtle posision sensors but it"s driving me mad it can be perfect for a mile then crap for 10 then mint for 3 and then it can just stall out at a junction after popping and banging and then pull away perfect !!!! my ed is dun in  .

Me too, i'm even trying to buy another bike to swap bits around to nail this fault but it is getting on my tits.

[grog]

mjgt, just buy a royal enfield, then youll really have problems to solve. 

[Mick_J]

mjgt, just buy a royal enfield, then youll really have problems to solve. 

I ran a 57 Matchless G80 for years without any problems at all, easy to work on and ride, only crap bit was the lights.

[KiwiCol]

Those Royal Enfields are made in India aren't they?  Nuf said then!

[shanered6]

well ive ordered new plugs and an air filter then thats everything consumable either new or cleaned and ive put a bottle of injector cleaner through for good measure !! 
so im going to check the TPS sensors next and then as a last resort see if i can find a local dyno and see if they can shed some light on it , after that i dont know you cant even sell a bike not running right but at the same time you cant keep throwing money down the drain either !!

[Mick_J]

Those Royal Enfields are made in India aren't they?  Nuf said then!

They may be made in India but they re probably a better bike than they were years ago.  They are really good bikes for anyone who just wants to plod around at 50-60 mph and get 70 mpg.  Prices are quite high for an "old" 350/500 single, they are just bringing out a 650 twin which looks like a 70's bike and will be another good but basic bike.

[KiwiCol]

They are very inexpensive down under Mick. Ya see them for sale in the dealerships, but seldom on the road.

[grog]

Shannered, feeling for you. wish i could help. such a brilliant bike normally. the dyno seems a good idea. i couldnt stand it, id sell and get another. have had bikes, cars, lawn mowers , whipper snippers in same boat. threw away, not worth the head hurt, sleepless nights etc.