K3 - 23mpg? - SV650.org

30-03-13, 08:24 PM

Ive recently brought my SV and after the first 2 weeks I had to replace my throttle position sensor as it wouldnt start. I got the TPS from a K5 SV (I know the history of the K5 it was fine) and now I have 60 miles to a tank D: which is 23 MPG (roughly).

.I have a 33bhp restriction (throttle + air intake)
.The brakes aren't binding
.The chain is fine to my knowledge
.I don't ride completely recklessly

Would I need to get it re-mapped?
any help greatly appreciated

, Kieren.

30-03-13, 08:46 PM

I'm afraid it's no good. I can offer you £50 and a mars bar for it. Best you'll get for one when that happens...

Pull your plugs out, have a look at them. If they're properly black chances are it's running too rich.
Could be a fuel leak somewhere along the line (whether tank/or fuel lines)

That is pretty poor so chances are it's something pretty drastic that should be obviously when it's found.

30-03-13, 08:52 PM

So does this mean that the bikes no good and need to cut my losses or should I persevere? :S

andrewsmith · 30-03-13, 09:17 PM

Throttle bodies probably need balanced

31-03-13, 10:17 AM

You did set the tps up didn't you ? If not have a serch on hear for the guide

yorkie_chris · 31-03-13, 10:28 AM

Yeah probably needs setting up, what did you replace the TPS for?

embee · 31-03-13, 10:32 AM

If that mpg is accurate I'm surprised it will actually run. That's typically twice the correct amount of fuel used, way too rich for an engine to run under normal circumstances.

31-03-13, 07:45 PM

Quote:

Originally Posted by andrewsmith

Throttle bodies probably need balanced

+1

31-03-13, 07:50 PM

Just to offer a slightly different angle... check your air filter too... i got a 33% increase in fuel economy by changing from a re-useable K&N to a standard paper filter!

31-03-13, 07:54 PM

My original TPS was faulty and wouldnt let the bike start in the first place, I checked it with a voltmeter and the voltage flowing through it was irattic, so I replaced it and set it to kick in at 2K revs and it was running beautifully but the fuel light came on at 60 miles. I've been doing some thinking and I am doing very short journeys (3 miles) in the almost freezing cold (not above 5 centigrade)

I've put the TPS back to 3K now and I will see how I get on. What would a throttle body adjusment do? cheers for the replies btw

30-03-13, 08:24 PM	#1
Kieren2492 Guest Posts: n/a	K3 - 23mpg? Ive recently brought my SV and after the first 2 weeks I had to replace my throttle position sensor as it wouldnt start. I got the TPS from a K5 SV (I know the history of the K5 it was fine) and now I have 60 miles to a tank D: which is 23 MPG (roughly). .I have a 33bhp restriction (throttle + air intake) .The brakes aren't binding .The chain is fine to my knowledge .I don't ride completely recklessly Would I need to get it re-mapped? any help greatly appreciated , Kieren.

30-03-13, 08:46 PM	#2
EssexDave Guest Posts: n/a	Re: K3 23MPG!? help :( I'm afraid it's no good. I can offer you £50 and a mars bar for it. Best you'll get for one when that happens... Pull your plugs out, have a look at them. If they're properly black chances are it's running too rich. Could be a fuel leak somewhere along the line (whether tank/or fuel lines) That is pretty poor so chances are it's something pretty drastic that should be obviously when it's found.

30-03-13, 08:52 PM	#3
Kieren2492 Guest Posts: n/a	Re: K3 23MPG!? help :( So does this mean that the bikes no good and need to cut my losses or should I persevere? :S

30-03-13, 09:17 PM	#4
andrewsmith Member Mega Poster Join Date: Apr 2010 Location: Newcastle upon Tyne, Just south of salad dodging country Posts: 7,750	Re: K3 23MPG!? help :( Throttle bodies probably need balanced __________________ RIP Reeder 20/07/1988 - 21/03/2012. Always missed squire!!! Every year we meet old friends, gain some new ones, lose old ones and you always remember them all. “Live as if you were to die tomorrow. Learn as if you were to live forever.” Mahatma Gandhi

31-03-13, 10:17 AM	#5
barwel1992 Guest Posts: n/a	Re: K3 - 23mpg? You did set the tps up didn't you ? If not have a serch on hear for the guide

31-03-13, 10:28 AM	#6
yorkie_chris Noisy Git Mega Poster Join Date: Apr 2007 Location: Halifax/Leeds Posts: 26,645	Re: K3 - 23mpg? Yeah probably needs setting up, what did you replace the TPS for? __________________ Currently Ex Biker Now rebuilding a 63' fishing trawler as a dive boat

31-03-13, 10:32 AM	#7
embee Member Mega Poster Join Date: Jul 2003 Location: Warwickshire Posts: 2,804	Re: K3 - 23mpg? If that mpg is accurate I'm surprised it will actually run. That's typically twice the correct amount of fuel used, way too rich for an engine to run under normal circumstances. __________________ "Artificial Intelligence is no match for natural stupidity"

31-03-13, 07:50 PM	#9
DanSp Guest Posts: n/a	Re: K3 - 23mpg? Just to offer a slightly different angle... check your air filter too... i got a 33% increase in fuel economy by changing from a re-useable K&N to a standard paper filter!

31-03-13, 07:54 PM	#10
Kieren2492 Guest Posts: n/a	Re: K3 - 23mpg? My original TPS was faulty and wouldnt let the bike start in the first place, I checked it with a voltmeter and the voltage flowing through it was irattic, so I replaced it and set it to kick in at 2K revs and it was running beautifully but the fuel light came on at 60 miles. I've been doing some thinking and I am doing very short journeys (3 miles) in the almost freezing cold (not above 5 centigrade) I've put the TPS back to 3K now and I will see how I get on. What would a throttle body adjusment do? cheers for the replies btw