Have you made any modifications or done any maintenance to the bike recently? Is the bike stock? That issue could be many things as the bike does start. Could be a vacuum leak, bad fuel pump or regulator, bad fuel tuner if you are using one, crank position sensor etc. Do you have an engine error light?
HELP please with desperate neutral engine stall after idle fluctuation (repeated for 3 times)
Hello everyone. Could you please have a look at the problem of my MY20 GSX-S1000 bike and help diagnose what might be the cause of deadly idle fluctuation? I was almost going nuts with that.
I have taken 2 video footages GSX-S1000 idle fluctuation
AND
showing how the engine idling fluctuate so dramatically as if I am blipping throttle very quickly (when actually I did not touch throttle at all) and eventually lead to total engine stall. It happened last night when I was about to ride the bike for a visit and in the end, I have to take public transport after 3 failed attempts.
I am living in Australia, so early winter temperature is around 15-degree Celsius. It was expected to rain during last night so humidity reached 80%. I suspect such strange idle vibration may have to do with 1.) air filter with water penetration 2.) TPS short circuit in wet weather 3.) other issue such as vacuum leak.
I am not expert in such mechanics and haven't seen this problem before except once in the past riding which recovered by itself at a second starting attempt. This time problem went seemingly severer. As the largest discussion group for GSXS1000 riders, I cannot find any better place as my last resort to have some opinion and suggestions for this symptom. If anyone have similar issue and got the answer, please let me know. Many thanks
I have taken 2 video footages GSX-S1000 idle fluctuation
AND
I am living in Australia, so early winter temperature is around 15-degree Celsius. It was expected to rain during last night so humidity reached 80%. I suspect such strange idle vibration may have to do with 1.) air filter with water penetration 2.) TPS short circuit in wet weather 3.) other issue such as vacuum leak.
I am not expert in such mechanics and haven't seen this problem before except once in the past riding which recovered by itself at a second starting attempt. This time problem went seemingly severer. As the largest discussion group for GSXS1000 riders, I cannot find any better place as my last resort to have some opinion and suggestions for this symptom. If anyone have similar issue and got the answer, please let me know. Many thanks
1 - 17 of 17 Posts
Thanks for replying mateHave you made any modifications or done any maintenance to the bike recently? Is the bike stock? That issue could be many things as the bike does start. Could be a vacuum leak, bad fuel pump or regulator, bad fuel tuner if you are using one, crank position sensor etc. Do you have an engine error light?
I am pretty sure that no aftermarket parts including full system exhaust, high flow filter to this bike, nor did I make any ECU flash or fuel management module. This bike is pretty much in stock condition, and I am satisfied with overall performance.
As for fault light on the dash panel I found no such error occurred. I searched around web and found one explanation attributed this problem to Valve air control unit Engine idle fluctuates and dies. plymouth engine idle 199... (yourmechanic.com) Another rider in this forum thought this might due to blocked fuel strainer My 2016 gsxs dies after a few minutes | GSXS 1000 Forum. The third speculation would be TPS drifting as usual.
However this morning when I tried another attempt to start engine, it went back to fully sound and healthy condition as if those sudden stall never happened. I was more convinced this problem has something to do with surrounding environment as it is clear and warm today as opposed to humid cold rainy day during last night. Might be wet air causing electronic fault or whatever but for now I would ride on it hoping this thing would not happen again.
Do you have a tail tidy? I ask because tail tidy's done on Saturday night often result in a break-down Sunday morning. Tail tidy's are sort of the cockroaches of electrical gremlins.Thanks for replying mate
I am pretty sure that no aftermarket parts including full system exhaust, high flow filter to this bike, nor did I make any ECU flash or fuel management module. This bike is pretty much in stock condition, and I am satisfied with overall performance.
Have you bridged the dealer mode plug under the rear seat to see if any fault codes have been stored, that would be a good starting point if, as you say, no modifications or changes have been made prior to the issue starting.
When was it last refuelled? could be bad fuel either stale or a bad dose of new fuel.
Has the tank been run down low?
Have the intakes for the airbox been blocked?
This things have a really sweet idle, so that rough hunting is surprising.
Has the tank been run down low?
Have the intakes for the airbox been blocked?
This things have a really sweet idle, so that rough hunting is surprising.
Listening to your videos, it seems to be moisture in the fuel, possibly just condensation in the tank or in the airbox. Also have a look at the engine oil to see if it is emulsifying (turning white and creamy!) which would indicate moisture probably caused by humidity or lack of the engine getting up to temperature. Just try riding for a 50 or so miles which will hopefully get all the moisture out of the fuel system/airbox/engineHello everyone. Could you please have a look at the problem of my MY20 GSX-S1000 bike and help diagnose what might be the cause of deadly idle fluctuation? I was almost going nuts with that.
I have taken 2 video footages GSX-S1000 idle fluctuation
ANDshowing how the engine idling fluctuate so dramatically as if I am blipping throttle very quickly (when actually I did not touch throttle at all) and eventually lead to total engine stall. It happened last night when I was about to ride the bike for a visit and in the end, I have to take public transport after 3 failed attempts.
I am living in Australia, so early winter temperature is around 15-degree Celsius. It was expected to rain during last night so humidity reached 80%. I suspect such strange idle vibration may have to do with 1.) air filter with water penetration 2.) TPS short circuit in wet weather 3.) other issue such as vacuum leak.
I am not expert in such mechanics and haven't seen this problem before except once in the past riding which recovered by itself at a second starting attempt. This time problem went seemingly severer. As the largest discussion group for GSXS1000 riders, I cannot find any better place as my last resort to have some opinion and suggestions for this symptom. If anyone have similar issue and got the answer, please let me know. Many thanks
It could be bad fuel.
If you can ride it and it sound ls like it's running on 3 cylinders or less it's most likely bad fuel.
If Its water in the fuel tank just put a cup of methylated spirits in the fuel tank as it mixes with water.
It's an old trick👍
If you can ride it and it sound ls like it's running on 3 cylinders or less it's most likely bad fuel.
If Its water in the fuel tank just put a cup of methylated spirits in the fuel tank as it mixes with water.
It's an old trick👍
Hey guys, he stated the bike runs fine now. It is a intermittent problem. That does not indicate a fuel issue.
Hi,
I am in Brisbane, Australia.
Mine does the same on cold nights leaving work or when it is humid. I have grown to live with it. This video is from a recent cold night shift and the idle will hunt until warm. Also if it is around 90% humidity the idle will hunt when sitting at traffic lights. I will hold just a little throttle to smooth out the idle. most of the time it will idle at 1000 RPM but drops to 500rpm like yours at time.
youtube.com
I am in Brisbane, Australia.
Mine does the same on cold nights leaving work or when it is humid. I have grown to live with it. This video is from a recent cold night shift and the idle will hunt until warm. Also if it is around 90% humidity the idle will hunt when sitting at traffic lights. I will hold just a little throttle to smooth out the idle. most of the time it will idle at 1000 RPM but drops to 500rpm like yours at time.
20220411 205743
youtube.com
I do have a tail tidy and re-wire the rear indicator but did not modify too much, the only change I did was just to relocate the stock halogen indicator to new tail tidy. If there should be an electric issue, I guess it may come from dashcam that connects to front light AUX port. Apart from that I did not make changes to internal electric such as ignition coil or rectifier.Do you have a tail tidy? I ask because tail tidy's done on Saturday night often result in a break-down Sunday morning. Tail tidy's are sort of the cockroaches of electrical gremlins.
Thanks, Lee, for the suggestion. I did not realize this could be an easy starting point as there isn't error light on the dash panel, but it is indeed worth trying by simply using paperclip.Have you bridged the dealer mode plug under the rear seat to see if any fault codes have been stored, that would be a good starting point if, as you say, no modifications or changes have been made prior to the issue starting.
Indeed, I cannot help worrying about engine when hearing it choked like this. The next day things get better engine went back to its normal purring sound which we are familiar with. Still digging into the cause by setting a dealer mode to check code. I have also ordered a new fuel strainer 15420-31J00 to make sure no clog in the fueling system.When was it last refuelled? could be bad fuel either stale or a bad dose of new fuel.
Has the tank been run down low?
Have the intakes for the airbox been blocked?
This things have a really sweet idle, so that rough hunting is surprising.
I reckon biggest chances lies within fueling too and I checked motor oil inspection hole finding transparent oil no evidence of emulsifying or whatsoever. Still considering I am living in early winter with a drastic temp change and 90% humidity, chances that humid air may still penetrate into fuel and get condensed.Listening to your videos, it seems to be moisture in the fuel, possibly just condensation in the tank or in the airbox. Also have a look at the engine oil to see if it is emulsifying (turning white and creamy!) which would indicate moisture probably caused by humidity or lack of the engine getting up to temperature. Just try riding for a 50 or so miles which will hopefully get all the moisture out of the fuel system/airbox/engineemucifying
Glad to see response from OZ rider fellow. Your engine seems a similar problem but better than mine as somehow it managed to keep running and normally as long as engine keeps running it would smooth itself as temp goes up to best working range. Mine would instantly stall unless I keep twisting throttle and force pumping more fuel into engine.Hi,
I am in Brisbane, Australia.
Mine does the same on cold nights leaving work or when it is humid. I have grown to live with it. This video is from a recent cold night shift and the idle will hunt until warm. Also if it is around 90% humidity the idle will hunt when sitting at traffic lights. I will hold just a little throttle to smooth out the idle. most of the time it will idle at 1000 RPM but drops to 500rpm like yours at time.
20220411 205743
I just ordered one fuel strainer from a NSW Suzuki dealer and am preparing for a tank remove/cleaning. Hoping that will work.
Hello everyone. Could you please have a look at the problem of my MY20 GSX-S1000 bike and help diagnose what might be the cause of deadly idle fluctuation? I was almost going nuts with that.
I have taken 2 video footages GSX-S1000 idle fluctuation
ANDshowing how the engine idling fluctuate so dramatically as if I am blipping throttle very quickly (when actually I did not touch throttle at all) and eventually lead to total engine stall. It happened last night when I was about to ride the bike for a visit and in the end, I have to take public transport after 3 failed attempts.
I am living in Australia, so early winter temperature is around 15-degree Celsius. It was expected to rain during last night so humidity reached 80%. I suspect such strange idle vibration may have to do with 1.) air filter with water penetration 2.) TPS short circuit in wet weather 3.) other issue such as vacuum leak.
I am not expert in such mechanics and haven't seen this problem before except once in the past riding which recovered by itself at a second starting attempt. This time problem went seemingly severer. As the largest discussion group for GSXS1000 riders, I cannot find any better place as my last resort to have some opinion and suggestions for this symptom. If anyone have similar issue and got the answer, please let me know. Many thanks
What does your Suzuki specialist workshop say or do? Have GSX S 1000 F no problem.
1 - 17 of 17 Posts
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