Bonnie using more fuel than normal?

Is the bike in std. trim or have you modified anything?

 

Definitely get in touch with the garage, surprised you didn't do it earlier. What did they do at the service? Check the valves? Re-map? Is she running ok? Best find out from them before doing anything yourself. Hope you get it sorted.

 

Yes I'll add to that as it's well below std!

 

Have you checked the condition of your plugs? They can tell you what your fuel mixture is like. Also having a look around I came across this :
Also we've had some oil temperature sensors go wrong in the past. One of the effects can be an increase in fuel consumption. The oil temp sensors acts a bit like an automatic choke, if it senses low oil temperature it assumes the engine is cold and it richens the mixture.

Testing the Oil temperature sensor Access to this component's connections is a bit harder. The sensor is situated on top of the oil cooler, LH side. The connections are situated right up under the tank, on a little 2-way plug and socket tied up next to the ignition coil. It can't be reached without removing the tank. The readings should be: With a Cold engine At ambient temperature of -10ºC.............8.5 to 10.25 Kilo Ohms. At ambient temperature of 20ºC............2.35 to 2.65 Kilo Ohms. With a warm engine..............................200 to 400 Ohms.

 

If as you say you're not techy, then in my opinion there is only one thing to do - tell the garage who did the work to fix it.

 

Biglad's right (as he often is)!
That is a low figure for the bike - my old carbed Bonnie with Toga exhausts, K&N filter and Bellmouth intake managed 135 miles before reserve was needed with 33000 on the clock.

 

I got the petrol light come on after 100 miles on Sunday - will keep an eye on it. I think it's running a bit rich anyway. It's idling at 1,000 rpm. Will have to check the book when I'm next with the bike.

 

Hi Yaya, I can't remember what bike you've got but if it's a Bonny then the advised tickover speed is 1050 +/- 50rpm, at normal operating temp.

It's a balance between ensuring there are enough revs for the battery to be charging whilst ticking over and ensuring optimum engine/gearbox operation.

 

Good luck, will be interested to hear what it is.

 

I wonder if they did anything to the brakes which has caused them to drag. That would cause your fuel consumption to rise like a good'un !

 

Tough luck there, hope they sort it at triumph, guess you don't need the full service done tho' just get them to look into the prob, unless you think they didn't change oil filter etc and used olive oil!?!

 

Hi MJ, why don't you change the air filter yourself. Then at least you will have eliminated that as the source of the higher than normal mpg?

It's a very easy job to do requiring only three nuts undone.

Also check your tyre pressures. If low it can affect MPG. Front 33psi; rear 41psi

 

Carb or injectors sealing seat fuel dribble into engines it appears that fuels used today are causing problems with carbs where they need sonic cleaning and not so often injectors as well I have cleaned injectors my using neat forte injector fuel system cleaner you had to start engine with petrol then add neat fuel cleaner, engine would run like rats and fast engine revs to keep engine running, 2 tins did the job of cleaning injectors this operation needs to be done outside and care not to get this on your paintwork.