Sudden increase in fuel consumption - SV650.org

rowdy · 10-11-10, 04:07 PM

Bike seems to be running as normal but in the past month or two has decided it likes to drink a tad more than usual

.
Spark plugs are due a change, but could that really be why I am only getting around 20mpg at the moment, no matter how throttle happy I am with it

.
Smells like its running a bit rich, could the ecu have put itself out of adjustment and will a fiddle on a dyno resolve the excessive fuel consumption? doesn't look like there is a fuel leak anywhere.
I am only getting 60-70 miles to a tank at best.

10-11-10, 04:18 PM

What's the air filter looking like?

rowdy · 10-11-10, 04:31 PM

Haven't looked tbh, I'll clean it at the weekend and see if that makes a difference along with some new plugs.

Bibio · 10-11-10, 06:42 PM

air filter wont make it use as much as that unless its got a dead bird in it with all its feathers blocking the element at which point it would run like a bag of poo.

is your oil level rising per chance?

Biker Biggles · 10-11-10, 06:51 PM

Is the cold start/choke stuck on?Possibly a faulty temp sensor?

rowdy · 10-11-10, 08:45 PM

Quote:

Originally Posted by Bibio

air filter wont make it use as much as that unless its got a dead bird in it with all its feathers blocking the element at which point it would run like a bag of poo.

is your oil level rising per chance?

lol, did think it would need to be a fair amount of carp for it to be the filter but it could do with a clean out anyway.
Oil level seems to be holding steady.

yorkie_chris · 10-11-10, 08:48 PM

Quote:

Originally Posted by Biker Biggles

Is the cold start/choke stuck on?Possibly a faulty temp sensor?

I'd agree this would be likely

Bibio · 10-11-10, 11:31 PM

what RPM does the bike idle at when its warm?

when was the last time you topped up your oil (in miles)?

is there oil residue on the outlet of your exhaust or dry carbon?

rowdy · 11-11-10, 04:47 PM

Quote:

Originally Posted by Bibio

what RPM does the bike idle at when its warm?

when was the last time you topped up your oil (in miles)?

is there oil residue on the outlet of your exhaust or dry carbon?

Idles just above 1000rpm when warm, if my speedo worked I'd tell you, but haven't topped it up since I changed the oil approx 1500 miles ago.
Dry carbon, no oily residue.

Don't think its choke stuck on, would have thought it would try to stall when warmed up but idles ok as Bibio asked. Temp reads normal on the display (90 when warm) so guessing thermostat is ok.

10-11-10, 04:07 PM	#1
rowdy Member Join Date: Apr 2008 Posts: 615	Sudden increase in fuel consumption Bike seems to be running as normal but in the past month or two has decided it likes to drink a tad more than usual . Spark plugs are due a change, but could that really be why I am only getting around 20mpg at the moment, no matter how throttle happy I am with it . Smells like its running a bit rich, could the ecu have put itself out of adjustment and will a fiddle on a dyno resolve the excessive fuel consumption? doesn't look like there is a fuel leak anywhere. I am only getting 60-70 miles to a tank at best. __________________ Silver pointy sk3, tail tidy, single seat cowl, fairing lowers, smoke double bubble screen, carbon hugger and front mudguard, full race M4 system, K&N filter, GSXR1000K2 forks, wheel and discs, GSXR750 calipers, HEL braided lines, TL1000s clip-ons, Gilles rearsets, Chinese cnc levers, led indies.

10-11-10, 04:18 PM	#2
Radlad Guest Posts: n/a	Re: Sudden increase in fuel consumption What's the air filter looking like?

10-11-10, 04:31 PM	#3
rowdy Member Join Date: Apr 2008 Posts: 615	Re: Sudden increase in fuel consumption Haven't looked tbh, I'll clean it at the weekend and see if that makes a difference along with some new plugs. __________________ Silver pointy sk3, tail tidy, single seat cowl, fairing lowers, smoke double bubble screen, carbon hugger and front mudguard, full race M4 system, K&N filter, GSXR1000K2 forks, wheel and discs, GSXR750 calipers, HEL braided lines, TL1000s clip-ons, Gilles rearsets, Chinese cnc levers, led indies.

10-11-10, 06:42 PM	#4
Bibio Member Mega Poster Join Date: Jul 2008 Location: here as devil's advocate Posts: 11,561	Re: Sudden increase in fuel consumption air filter wont make it use as much as that unless its got a dead bird in it with all its feathers blocking the element at which point it would run like a bag of poo. is your oil level rising per chance?

10-11-10, 06:51 PM	#5
Biker Biggles Member Mega Poster Join Date: Jan 2005 Location: Barnet Herts Posts: 5,071	Re: Sudden increase in fuel consumption Is the cold start/choke stuck on?Possibly a faulty temp sensor? __________________ On a clear day we stand there and look further than the ordinary eye can see.

10-11-10, 11:31 PM	#8
Bibio Member Mega Poster Join Date: Jul 2008 Location: here as devil's advocate Posts: 11,561	Re: Sudden increase in fuel consumption what RPM does the bike idle at when its warm? when was the last time you topped up your oil (in miles)? is there oil residue on the outlet of your exhaust or dry carbon?

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