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Offline Bikespod

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Re: Fuel smell from exhaust and low mpg
Reply #10 on: March 21, 2021, 09:12:20 PM
I’m now thinking it’s the fuel pressure regulator as I’ve just read a thread where someone describes very similar symptoms to my bike, smelly exhaust and white smoke at start up, clearing after a while, and very similar mpg figure.

Offline Bikespod

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Re: Fuel smell from exhaust and low mpg
Reply #11 on: March 22, 2021, 08:29:29 PM
Although I can’t find a fuel pressure regulator on the parts drawings for the Crossrunner Mk1.
Does anybody know where it is?

Offline Bikespod

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Re: Fuel smell from exhaust and low mpg
Reply #12 on: March 28, 2021, 08:17:35 PM
In the interest of possibly helping others with similar issues.

Yesterday I fitted an O2 eliminator and removed a very sooty looking O2 sensor and plugged the hole with the supplied bolt and aluminium washer. £15 from eBay.

The connection is fairly low on the LHS behind the fairing. Inside a rubber hood with 2 wires going into it.
Today I did my commute for a direct comparison on fuel consumption.

Before the modification I was getting 6.1 miles per litre.

Today the dash read 8.1 miles per litre.

That’s a 25% improvement.

It equates to previously - 128 miles to a full tank

Now 170 miles to a full tank.

This is just commuting in heavy traffic. If I was on dual carriageways and motorways I’d expect it to increase significantly.

28mpg vs 37mpg. I’m fairly happy with that result.

Offline Skids

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Re: Fuel smell from exhaust and low mpg
Reply #13 on: March 29, 2021, 06:55:39 AM
That sounds like good news and a significant improvement in fuel consumption.

It would be interesting to see a non-commute consumption as well.
98 VFR800 - 130,000 miles (sold)
08 VFR800 - 76,000 miles (sold)
14 VFR1200 - 20,000 miles
15 VFR800X - 44,000 miles (sold)
18 VFR800X - 9,000 miles

Offline Bikespod

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Re: Fuel smell from exhaust and low mpg
Reply #14 on: March 29, 2021, 09:04:03 AM
Indeed it would. One day soon hopefully.
Interestingly the difference between a Sunday commute ( less traffic ) and a Monday commute is obvious.
8.1 m per litre  vs   7.6m per litre


Offline Skids

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Re: Fuel smell from exhaust and low mpg
Reply #15 on: March 29, 2021, 12:45:05 PM
*Originally Posted by Bikespod [+]
Indeed it would. One day soon hopefully.
Interestingly the difference between a Sunday commute ( less traffic ) and a Monday commute is obvious.
8.1 m per litre  vs   7.6m per litre

My daily commute seems to average around 10.5m/l but that's sat at 70mph :038: for 45 miles so the type of riding can make a huge difference.
98 VFR800 - 130,000 miles (sold)
08 VFR800 - 76,000 miles (sold)
14 VFR1200 - 20,000 miles
15 VFR800X - 44,000 miles (sold)
18 VFR800X - 9,000 miles

Offline Bikespod

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Re: Fuel smell from exhaust and low mpg
Reply #16 on: March 29, 2021, 01:17:31 PM
Thanks Skids. That’s reassuring. Maybe I’m chasing ghosts trying to get any better than 8 in heavy traffic then.

Sat at 70mph ? Honest officer.....😉

Offline Bikespod

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Re: Fuel smell from exhaust and low mpg
Reply #17 on: April 07, 2021, 01:09:24 PM
On a run out of town over 29 miles I returned 48.5mpg. Wasn’t going crazy, just steady speeds, no Vtec fun.
10.4 m/l average.
I think I’ll refit a new O2 eliminator.
Honda want £498 for a new one! ( that isn’t a typo ) four hundred and ninety eight pounds. WTAF!
I’m going to try installing a Bosch universal one that comes with special crimps to attach the Honda connector.
Or I can use the used VFR800 2017 low mileage one I got on eBay for £11

Next thing to change is the thermostat when I get a chance.

Offline Skids

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Re: Fuel smell from exhaust and low mpg
Reply #18 on: April 07, 2021, 04:54:03 PM
*Originally Posted by Bikespod [+]
On a run out of town over 29 miles I returned 48.5mpg. Wasn’t going crazy, just steady speeds, no Vtec fun.
10.4 m/l average.
I think I’ll refit a new O2 eliminator.
Honda want £498 for a new one! ( that isn’t a typo ) four hundred and ninety eight pounds. WTAF!
I’m going to try installing a Bosch universal one that comes with special crimps to attach the Honda connector.
Or I can use the used VFR800 2017 low mileage one I got on eBay for £11

Next thing to change is the thermostat when I get a chance.

I believe they can be home made, though not by me.  :006:
98 VFR800 - 130,000 miles (sold)
08 VFR800 - 76,000 miles (sold)
14 VFR1200 - 20,000 miles
15 VFR800X - 44,000 miles (sold)
18 VFR800X - 9,000 miles