Text 750 - 2010 - Cold start

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GSXR 750 - 2010 - Cold start

Would appreciate some insight. When I leave my bike at work open garage with a roof for the day, and it's really cold (7 and below) when I go to turn it on, it doesn't want to stay at low rpm as it would turn off. It smells like its not burning the gas properly and the rpm keeps going up and down.On the way home continues doing the same until about half way aprox. 15 min and then goes back to normal.Any ideas? obviously related to temperature as it never happens when its hot, but what can it be.AND NO MEME, IT'S NOT BECAUSE ITS A GIXXER :(
 
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Re: GSXR 750 - 2010 - Cold start

zx600 arent gixxers what gives? just turn up the idle, its a racing bike ( warm blooded)
 
Re: GSXR 750 - 2010 - Cold start

isn't that normal?
I think for most bikes this does not happen, but the new gix, they tend to help warm the engine by running it at high idle.

Mine does a high idle for 30 secs. My car does a high idle for 3mins.

A cold engine requires a different air/fuel ratio than a warm engine. Carbs do not do this for you, thats why u would have to choke the engine. With fuel injection, the ecu regulates this, unless u are riding a Kawi :rolleyes:
 
Re: GSXR 750 - 2010 - Cold start

Stewart said:
zx600 arent gixxers what gives? just turn up the idle, its a racing bike ( warm blooded)
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there is no idle, it's electronic..... Any other useful answers
 
Re: GSXR 750 - 2010 - Cold start

dude it's jsut a fast idle until the coolant temp sonsor is reading a high enough value to lower the idle again... very normal.
 
Re: GSXR 750 - 2010 - Cold start

i like it when you been a prick to rockerguy, but wheres your sense of humor. you re still thinking kawasaki.
 
Re: GSXR 750 - 2010 - Cold start

Freestyle72 said:
dude it's jsut a fast idle until the coolant temp sonsor is reading a high enough value to lower the idle again... very normal.
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that would be normal but it keeps going up and down, if it was always up then I would agree, also I don't think it idles up, it just seems like the air and gas mixture goes all wanky
 
Re: GSXR 750 - 2010 - Cold start

Stewart said:
i like it when you been a prick to rockerguy, but wheres your sense of humor. you re still thinking kawasaki.
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lol I wasn't been a prick to rockerguy, I was been a prick to you :) . Thanks for answering anyways ;)

read this

Reset the ISC valve to learn mode, which might solve the problem. Do you think the Idle Speed Control might be the cause of our problem here? after all, the ISC reports back to the ECU, telling it to adjust the Secondary throttle valves and the fuel injection amount..
 
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Re: GSXR 750 - 2010 - Cold start

What kind of shape are the spark plugs in, and are they the correct iridium spark plugs for the engine (CR9EIA-9) not cheap non-iridium replacements (CR9E)?

How much mileage on the engine ... is it in need of valve clearances being checked?

It sounds as if the cold-weather calibration is too lean at idle.

Is there anything non-stock ... exhaust system, air filter, Power Commander, tuning of the stock ECU, blocking-off the air-suction system at the cylinder head - Suzuki calls this the PAIR system? If any of this has been changed then it needs to be ruled out as a cause. It could have resulted in a too-lean-to-fire condition.

I am not 100% sure, but I think the stock exhaust system on that bike has a lambda sensor in it. The lambda sensor affects how the engine runs at light load and low to moderate revs (gives feedback on air/fuel ratio). If this sensor has been removed (generally by changing out the exhaust system) what was done to offset that, and was it done correctly?

If all that is OK then the usual fault is a wacky temperature sensor, and there are two of them, the coolant temperature sensor and the intake air temperature sensor.

Is the temperature displayed on the coolant temperature display plausible? (yes, I know it doesn't display anything below a certain amount, but once it starts displaying, is it plausible, and does it reach a temperature where it starts displaying in a plausible amount of time?)
 
Other posts showed up while I was typing. If the TPS or ISC calibration are off, that can certainly cause a lean condition off the bottom. Do the calibration procedure.
 
Re: GSXR 750 - 2010 - Cold start

Bike has the stock spark plugs, 13000km
I have a M4 slip on, no power commander
Nothing was done to offset the removal of the lambda sensor
The temperature display reads pretty normal.

It had cross my mind that the slip on was the probable cause.

Anything I can do to offset this?

Bike runs like *** and I do ride most o the winter

Thank you for the reply Brian
Brian P said:
What kind of shape are the spark plugs in, and are they the correct iridium spark plugs for the engine (CR9EIA-9) not cheap non-iridium replacements (CR9E)?

How much mileage on the engine ... is it in need of valve clearances being checked?

It sounds as if the cold-weather calibration is too lean at idle.

Is there anything non-stock ... exhaust system, air filter, Power Commander, tuning of the stock ECU, blocking-off the air-suction system at the cylinder head - Suzuki calls this the PAIR system? If any of this has been changed then it needs to be ruled out as a cause. It could have resulted in a too-lean-to-fire condition.

I am not 100% sure, but I think the stock exhaust system on that bike has a lambda sensor in it. The lambda sensor affects how the engine runs at light load and low to moderate revs (gives feedback on air/fuel ratio). If this sensor has been removed (generally by changing out the exhaust system) what was done to offset that, and was it done correctly?

If all that is OK then the usual fault is a wacky temperature sensor, and there are two of them, the coolant temperature sensor and the intake air temperature sensor.

Is the temperature displayed on the coolant temperature display plausible? (yes, I know it doesn't display anything below a certain amount, but once it starts displaying, is it plausible, and does it reach a temperature where it starts displaying in a plausible amount of time?)
Click to expand...
 
Brian P said:
Other posts showed up while I was typing. If the TPS or ISC calibration are off, that can certainly cause a lean condition off the bottom. Do the calibration procedure.
Click to expand...
K, that sounds like a possibility. I will try that over the weekend and report back

I ALSO HAD Water instead of coolant from this summer tracking on it but after this happened the first time I changed it back to coolant
 
So, after spending hrs and hrs reading on the Gixxer forums, everything seems to point out to valve clearance. I don't know why valve clearance will make the bike run like **** on cold days but that's what resolved the issue of many people. Also my bike only has 14000k but bikes with as low as 6000 milles are having the valve clearance problem.

anyone can clarify why would valve clearance cause this issue?
 
Valve clearances that are too tight will lead to loss of compression and that causes all sorts of other problems.
 
Brian P said:
Valve clearances that are too tight will lead to loss of compression and that causes all sorts of other problems.
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I guess what makes no sense it that it is an intermittent problem.
 
Re: GSXR 750 - 2010 - Cold start

Englishj said:
The bike hates you.
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it's ****** at me for taking it to the track....I have aPAULOgised but she won't take it :)
 
Re: GSXR 750 - 2010 - Cold start

another possibility is the ISC valve getting stuck


What do you think Brian?

I will try all these options this weekend
 
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Re: GSXR 750 - 2010 - Cold start

Based on your description; the hunting idle on a GSXR is generally one of two things:

The TPS is either out of adjustment (most likely because someone tried to adjust the idle) or not reading properly in that range (sensor bad)

The Secondary Throttle Valve motor is malfunctioning or the sensor has gone south.

Any trouble codes stored in memory? If not, I would start with adjusting the TPS.
 
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