Cold Stumble

[53driver]

Maybe not so much the pump as the in tank screen/ filter. I still think it's a lean condition , lack of fuel.

If it's a screen or filter issue, why would it seemingly disappear at operating temperature?
I been chasing this one for 50,000 miles now....I'm ready to believe almost anything!

[shooter]

If it's a screen or filter issue, why would it seemingly disappear at operating temperature?
I been chasing this one for 50,000 miles now....I'm ready to believe almost anything!

Once the engine is warmed up it requires less fuel to operate efficiently.

[53driver]

Once the engine is warmed up it requires less fuel to operate efficiently.

Okay, I'm with you....but I'm still missing something (probably VERY basic):
Let's say that the motor requires "x" amount of fuel when at idle cold, and let's say needs "x/2" when idle warm.
When I crack the throttle at cold to get going - let's say that requires "2*x" of fuel - the motor hiccups almost to the point of stalling, regardless of clutch lever position.

If this was a screen or filter issue, would it then make sense that 'anytime' - warm or cold - I needed "2*x" amount of fuel the motor would at least burp?

Again, I am NOT being willfully ignorant here, I am just not getting it.
Thanks,
Steve

[shooter]

I'm not saying that's it Steve. Just supposition. A cold engine can require twice as much fuel as a warm engine. That's why it goes away when it warms up. It could be in the programming in the ECU. Lots of could be all over the place. There is only one constant. It's short on fuel when cold.

[53driver]

I guess when things like this are out there.....it's enough of an issue.

http://electricalconnection.com/inde...-stumble-stop/

Cheers,
Steve

[GaTeach]

I guess when things like this are out there.....it's enough of an issue.

http://electricalconnection.com/inde...-stumble-stop/

Cheers,
Steve

Lol not in a million years

[tenxxx]

I guess when things like this are out there.....it's enough of an issue.

http://electricalconnection.com/inde...-stumble-stop/

Cheers,
Steve

Ya, adjustable. I like choices.

[53driver]

Steve I do know a couple guys on another forum that still had a problem. Sent the ECU back to Guhl a second time and no issues after that. If it was me I would tell Don about the problem so he could pay special attention to that area.

I shall - thank you.

On a side note , you get that flash you better hang on in first and second. It ain't the same bike.

I don't think I'll have a problem with that part!!!