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There's another thread with a post similar to this however incase it's not the same problem I'll start my own.

Bike is just back from its 24k service (actually done at just over 25k) and has already covered about 600miles since the service. Before the service I'd thought I'd felt a flat spot around 4k, I thought it was just me as I didn't notice it all the time.

The past week I've been using it away from home, down side being the daily commute is only about 4 miles. I thought this might be causing the increasing lumpyness. Most notably it's on progressive acceleration through all gears. It feels like an old carb type flat spot or fueling issue, probably from around 3 1/2k upwards. It holds speed fine. MPG does appear to be down. Ive just had a 180 mile round trip and it's about the same. I only use the expensive petrol. 😊

Going by suggestions on the other post I'm leaning towards a stick coil. Is there any way to determine which one it could be (even if it is?).

Thanks in advance!

Right, taking a chance and gong straight for the stick coils. After much trawling this sounds like the most likely. I'm away from home and am pretty m check limited to the tools in the bike.

Is there anything (tools or otherwise) I need to look out the for whilst changing the coils? Input gratefully appreciated!

just need the plug cap remover which should be in the tool kit (the round plasticky thing) and I think it then just unplugs

dave the german wrote:just need the plug cap remover which should be in the tool kit (the round plasticky thing) and I think it then just unplugs

I've never had any luck with those plastic things..........

A couple of broad head screwdrivers with rag around the shafts - to lever each side of the stick-coils evenly - seems to work better.

Al

Nice Chaps. Glad the weather has held off 😡

Blackal wrote:

dave the german wrote:just need the plug cap remover which should be in the tool kit (the round plasticky thing) and I think it then just unplugs

I've never had any luck with those plastic things..........

A couple of broad head screwdrivers with rag around the shafts - to lever each side of the stick-coils evenly - seems to work better.

Al

Know what you mean Al. I bought the alloy version of the plasticky thing - only costs about an Ayrton

[quote="dave the german"][quote="Blackal"][quote="dave the german"]just need the plug cap remover which should be in the tool kit (the round plasticky thing) and I think it then just unplugs[/quote]

I've never had any luck with those plastic things..........

A couple of broad head screwdrivers with rag around the shafts - to lever each side of the stick-coils evenly - seems to work better.

Al [/quote]

Know what you mean Al. I bought the alloy version of the plasticky thing - only costs about an Ayrton[/quote]

Dave the German from the north east, tawkin cockney.

ianbcr wrote:

dave the german wrote:

Blackal wrote:

dave the german wrote:just need the plug cap remover which should be in the tool kit (the round plasticky thing) and I think it then just unplugs

I've never had any luck with those plastic things..........

A couple of broad head screwdrivers with rag around the shafts - to lever each side of the stick-coils evenly - seems to work better.

Al

Know what you mean Al. I bought the alloy version of the plasticky thing - only costs about an Ayrton

Dave the German from the north east, tawkin cockney.

Ja!!no wonder I'm confused for most of the time

The plastic plug cap removers are easy to use - but you need a short length of material (1" wide nylon strap is ideal) that you loop around the cross-bar and then you pull on the material -NOT the plastic loop. Works perfectly.

Realise I didn't close this off. It was the left coil. Got it changed in 5 mins with all supplied tools. Cheers chappies!

Shouldn't the dodgey coil have shown up at the service when diagnostics were run ?
Mine might just have a similar problem but as it's due a service I was going to leave it alone and see what turns up when it's in the pits ?