Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[Grumpyoldman@40]

I own a 2009 GT650R. I have recently developed a problem whereby I experience power loss. This is only at the higher rev range and only lasts temporarily resulting in a sudden jolt. The problem is this is generally when I’m overtaking, so it’s quite dangerous. I’m currently riding the bike at 75% as I just don’t trust it.

It’s had a recent service - new plugs, air / fuel filter etc but I’m just at a loss. Further to this my garage isn’t particularly interested in finding the fault stating “well, it could be anything”.

Does anybody have any ideas? I’m desperate to get this fixed.

Thanks

Register and log in and the Ads below will be gone! :D

[CR]

If you suspect the fuel pump, remove it and test it submerged in a bucket of fuel. Mine had only a trickle instead of the shot it should of been pumping. Messy but doable and at least you'd know.

[Grumpyoldman@40]

If you suspect the fuel pump, remove it and test it submerged in a bucket of fuel. Mine had only a trickle instead of the shot it should of been pumping. Messy but doable and at least you'd know.

Thanks for getting back to me. Everything seems to be pointing towards the fuel pump which was my fear. My mechanical ability is quite low, but I’ll give it a shot or just bite the bullet and have it replaced.


Sent from my iPhone using Tapatalk

[Grumpyoldman@40]

Turns out it wasn’t the fuel pump. It was an air intake leak causing the problems.


Sent from my iPhone using Tapatalk

[spit051261]

Seems like your mechanical abilities were a lot better than you thought . Well done 
It's great when people actually try different things and use their brains to find faults .

[Hylife]

It’s had a recent service - new plugs, air / fuel filter etc ........

Turns out it wasn’t the fuel pump. It was an air intake leak causing the problems.

Yet another incompetent dealer mess up.

[nickgtr]

Turns out it wasn’t the fuel pump. It was an air intake leak causing the problems.


Sent from my iPhone using Tapatalk

Is there more specifics? as in which part of the intake, or vacuum line? Mines got a similar gremlin but I think its more to do with a very shit batch of fuel I had recently, I serviced it and refuelled it, caned the living shit out of it every gear and didn't have a single hesitation. Cant hurt to check everything just in case though.

[Grumpyoldman@40]

Turns out it wasn’t the fuel pump. It was an air intake leak causing the problems.


Sent from my iPhone using Tapatalk

Is there more specifics? as in which part of the intake, or vacuum line? Mines got a similar gremlin but I think its more to do with a very shit batch of fuel I had recently, I serviced it and refuelled it, caned the living shit out of it every gear and didn't have a single hesitation. Cant hurt to check everything just in case though.

I spoke too soon - the same fault is back. It’s not as pronounced as before but as soon as I open that throttle there is a sudden power loss.
I usually use the 98 octane fuel, but just before the problems started I put in the standard 95 - don’t know if this has any bearing.
The bike is going to a Hyosung Specialist to get plugged in - I’ll update with what the issues were.



Sent from my iPhone using Tapatalk

[spit051261]

I use 91 on my mine and it seems to pop along OK .
Reminds me of when I had my R33 Skyline , that bitch had to have the best fuel although It was fun .

[AJC650]

Apparently, Hyosungs only need the cheapest fuel - that is what they are tuned for.

If it has just been serviced, it sounds like maybe something from that - plug gap, air leak, loose connection etc.?  Or that pesky sidestand switch?  Mine caused an intermittent cut out until I disconnected it.  That fixed everything!