[VizslaMan]

Hey folks.

Finally getting some miles on the bike and have noticed something that is causing me some concern.

When the fuel light comes on, around 40 miles range left, I cannot give the bike full throttle. I can only give 50%, any more and the bike power dissapears and the bike dips, until I release the throttle. If I give smooth power then it doesn't do it but cannot rev the engine high.

Its pretty annoying. If I have 40 miles reange, I would like to ride normally.

Has anyone experienced this?

I have seen on cars where you get to low range you cannot give 100% and this is controlled electronically.

It almost seems like this but I believe it is a fueling issue because of the sudden lack of power and the bike dipping.

I've tried different fuels including premium but still the same issue.

Look forward to hearing your thoughts.

Thanks in advance.

 

[Hood]

Never heard of that or had it but I am wondering if maybe it is the fuel tank issue, filter clogged and when tank is low it can't sup enough juice to perform.
Do you know if yours was an affected bike and if it is has it had the recall?

 

[DoubleThumper]

... i.e. an ATAS from 2018, 2019, 2020?

 

[VizslaMan]

Thanks for the replies. It is a 2022 ATAS. 6 months old.

It's very unnerving when riding as I was going for an overtake the other day and the fuel light came on, then boof, no power or possibly fuel.

 

[satx_tengu]

Sounds like a clogged fuel filter. I had similar symptoms on my 2020 ATAS. But I thought they had addressed the fuel pump/filter issue for all the 2022 models...

 

[Butters]

sounds Like it could be a clogged filter but I’m also wondering about traction control kicking in. If the fuel tank is almost empty there is less weight up front and seems plausible that hitting a bump might unweight the front tire enough to kick the TC on.

 

[Sled]

Sounds like fuelling issues. Is there any error codes showing up? With gen 3's Im unfamiliar with how to do this.
Hopefully your dealer is handy

 

[VizslaMan]

Thanks again for your replies.

I wasn't aware of any fuel pump/filter issues. Will need to do some research there.

I do not think it would be traction control. I had excellent traction when riding and no traction control light came on when the issue was present.

No error lights on the dash however I have not thought about reading error codes like a car. Does the AT have an OBD2 port?

One question I have, if the fuel filter was clogged, would the issue not be present all the time. It is only there when the fuel light is on.

A plausible explanation could be the fuel sender is sending the wrong signal. Saying the tank has 40 miles bit is actually empty. I did not think to check the tank last time I filled up. Had this with a car once.

I know when the issue arises so I think I will replicate it and do some more investigation. My dealer is a 3 hour round trip for me with repectable public transport available.

 

[Hood]

Yes the AT has an OBD port but you will need a special adapter which can be had from Amazon. You can however also read the codes without that, I think you can see the DTC codes from the TFT menu but would have to check that to be sure, you can also get blink codes by, I think, shorting the wires on the Diagnostics plug and doing a certain routine but again I would have to look to be sure.

Regarding the filter being choked and problems only being when low fuel level, that was the reason I suggested it may be that as if it is only the lower part of the filter that is partially blocked then it would flow fine at higher fuel levels.

 

[Hood]

Oh also meant to say you should not have the known fuel tank debris issue on a 2022 bike, I think the last of the problem ATAS's was early 2020 manufactured ones. That is assuming yours is a 2022 bike and not just a 2022 registered bike but maybe left over and made earlier. My 2021 AT that I had was a 2020 manufactured bike but late 2021 registered.

 

[DoubleThumper]

Embossed VIN code on frame contains the manufacture model year. Example: "K" is 2019.

 

[Hood]

This is where you see the DTC on the CRF1100.

 

[Peter Tom Thompson]

I wouldnt count on that range being correct. Recently in Cornwall I got caught when the garage I was counting on had no fuel . I watched my range going down then at 15 miles range it went to no display and after 3 miles started spluttering when going uphill just as I reached the garage . What I filled up meant in theory I had 1/2 a litre left.

 

[DoubleThumper]

I wouldnt count on that range being correct. Recently in Cornwall I got caught when the garage I was counting on had no fuel . I watched my range going down then at 15 miles range it went to no display and after 3 miles started spluttering when going uphill just as I reached the garage . What I filled up meant in theory I had 1/2 a litre left.

No bad. 0.5 liter left is essentially nothing. I'd say a job well done.

 

[DirtRoadGuy]

Assuming the computer fuel management is accurate, we are talking about 40 miles / 64km or about 3 litres of fuel. In an irregularly shaped fuel tank, without surge boxes, its pretty easy to imagine that some air is getting into the fuel system during harsh manoeuvres.
My Googling of the ATAS indicates a tank capacity of almost 25 litres. You are running down to the last 10-15%. In my experience, any road vehicle is suspect a fuel levels this low, let alone an 1100cc motorcycle. Save some headaches and keep an extra couple of litres in the tank.

 

[Heligaz]

I recently had a similar issue. I was less to empty than you, I was concerned I wouldn’t make it to the nearest gas station. , it got worse as I carried on riding.

 

[DirtRoadGuy]

Its pretty annoying. If I have 40 miles reange, I would like to ride normally.

Has anyone experienced this?

I recently had a similar issue. I was less to empty than you, I was concerned I wouldn’t make it to the nearest gas station. , it got worse as I carried on riding.

I think that's two votes for the fuel exhaustion theory....
Obviously I sound like a grumpy old man now, but motorcycles I rode for the first twenty years of my life didn't have fuel guages. You rode them until you experienced power loss (typically on acceleration) and then you turned the fuel valve to reserve. Hopefully, I'm not "preaching to the choir" here, but I think the forest is lost amongst those **** trees.

 

[DoubleThumper]

I think that's two votes for the fuel exhaustion theory....
Obviously I sound like a grumpy old man now, but motorcycles I rode for the first twenty years of my life didn't have fuel guages. You rode them until you experienced power loss (typically on acceleration) and then you turned the fuel valve to reserve. Hopefully, I'm not "preaching to the choir" here, but I think the forest is lost amongst those **** trees.

Yeah, I don't know why they couldn't fuel gauge only the primary tank and a "range count down" the reserve that is flipped in by the rider.

Maybe it is six and one half dozen.

 

[Butters]

I think that's two votes for the fuel exhaustion theory....
Obviously I sound like a grumpy old man now, but motorcycles I rode for the first twenty years of my life didn't have fuel guages. You rode them until you experienced power loss (typically on acceleration) and then you turned the fuel valve to reserve. Hopefully, I'm not "preaching to the choir" here, but I think the forest is lost amongst those **** trees.

I remember those days fondly. Except for the time I forgot to turn the fuel valve back to the main tank after filling up. Nothing like hitting that point of engine sputter only to reach down and realize you already drained the reserve.

 

[JohnTz]

Your just running out of fuel and when you give it the gas the little fuel remaining sloshes towards the back and the bike starves for fuel. Don’t run it that low.