My s is a 99 model with 52K up and I'm noticing the performance going off a little. Doing the valves, air filter and throttle linkages is not making the usual improvement and I believe the fuel injectors may need cleaning. You can buy carb cleaner in Halfords but I don't know if this is totally effective in getting rid of all the fuel gum and glazing.
Has anyone carried out this operation and how did you clean the injectors ? Was there a big difference in performance once this was carried out ? New ones from BMW are about £90 each which is a joke.
Cheers
Scott
Fuel Injectors
Moderators: slparry, Gromit, Paul
Fuel Injectors
BMW R1100S
Triumph Sprint ST 955
Triumph Sprint ST 955
As well as petrol additives to clean them I think you can get them cleaned ultrasonically.
Try these guys to see if they can advise or source new ones cheaper.
You can even get your Mobilube 1 SHC from them (I did!).
OK, they may appear to be car specialists but they are a Bosch service centre and advertise Motronic diagnosis on their front.
Try these guys to see if they can advise or source new ones cheaper.
You can even get your Mobilube 1 SHC from them (I did!).
OK, they may appear to be car specialists but they are a Bosch service centre and advertise Motronic diagnosis on their front.
Thanks ME-109. I gave them a call just a minute ago and they can ultrasonically clean them for £25 the pair + Vat which sounds ok. I'm going to find out from the manual exactly what type of injectors BMW use as this firm can probably get replacements for them at a much lower cost than BMW.
I've been looking through a few web sites on the issue and some of them recommend getting injectors cleaned every 25K. They are critical to a bikes performance. The fuel flow rate needs to be matched and they have to produce similar spray patterns to work properly. The bike has been a bit sluggish for quite a time now so I think a professional clean is in order.
Cheers
Scott
I've been looking through a few web sites on the issue and some of them recommend getting injectors cleaned every 25K. They are critical to a bikes performance. The fuel flow rate needs to be matched and they have to produce similar spray patterns to work properly. The bike has been a bit sluggish for quite a time now so I think a professional clean is in order.
Cheers
Scott
BMW R1100S
Triumph Sprint ST 955
Triumph Sprint ST 955
I would be interested to know the cost (and model number) of their matched replacement pair. If it's not too far above £25 + vat, I might go for them.
I described under another heading how my bike is now running rich after a thorough fuel system clean up, including a new filter, subsequent to water getting into the fuel. New injectors, then a revisit to the Dyno centre to remap the PC.
I described under another heading how my bike is now running rich after a thorough fuel system clean up, including a new filter, subsequent to water getting into the fuel. New injectors, then a revisit to the Dyno centre to remap the PC.
Oyster. 1999 R1100S. Almost original.
Scotty, it might have been under someone elses heading; but to summarise it was as I said. The misfiring and inability to rev past about 4k was agony. The strip down showed water in the tank. Water wet fuel filters restict fuel getting through. I am not sure how the water got in, but I did two outings of several hundred miles each in the rain in the last year, but I think I picked up some contaminated fuel that finally caused the problem. Now that the fuel system is better, it's letting more through and running rich up to 4K.
Oyster. 1999 R1100S. Almost original.