[lukemc]

My z750s recently started acting a bit strange. It will start up just fine but when it first starts and is idling the idle is rough. it goes between 500 rpm and 1000 rpm. If i get on and go, it will feel just fine nice and strong but once i get to the end of my street like 200 years if i clutch in and come to a stop it almost always will stall out. After some riding and letting it warm up the revs look REALLY solid on 1000 rpms at idle most of the time but occationally it will still stall if i am braking hard to a complete stop.

Its really annoying and this is my first fuel injected bike so i dont really know where to start. Any help would be greatly appreciated. If you need anymore details ill try my best to clue you in!!


Thanks

 

[Smash]

Has the bike been sitting for a while?

 

[BigEdge]

^ Has it been sitting?
Try bumping the idle up to 1050 RPM. Run some some fuel injector cleaner Techron or SeaFoam through it..
You may get lucky, easy fix.

 

[lukemc]

The bike was the previous owners daily driver but it sat for about 2 weeks maybe while i was getting the title and insurance done. Ive ridden it at least a couple times a week since then so I dont think that it sat around for too long.

I put some injector cleaner in and bumped the idle up just a bit so we will see how that goes! It looks good right now but the problem is a bit on and off so ill update if those two things didnt fix it. Thanks!

 

[Easy Rider]

I put some injector cleaner in and bumped the idle up just a bit so we will see how that goes! It looks good right now but the problem is a bit on and off so ill update if those two things didnt fix it. Thanks!

Other routine maintenance might be in order now if you don't know what has been done.
Check/replace the air filter.
Clean the throttle bodies.
Replace the plugs.
Check the plug wires.

 

[simrule]

Hi guys,
I have the same issue with my z750s 2006, so same model/year...
When the engine is cold and I rev the bike like 7k rpm and shut it quickly, it will stall...
It did happen once on the road, I was doing 110km/h and I pull the clutch and rev the bike very high than shut the gaz quick and the bike stalled...

Anyway, in normal running condition, the bike is great and don't have any fail.

 

[Jasmado]

Same issue here however my bike had about 5 years in storage with tank removed. I install new fuel pump still stalls when I dump throttle

 

[marky]

I've got the same issue with my 2006 z750s. Bike was used regularly by the previous owner and has been well looked after. It stood in the showroom for maybe a couple of months before I bought it 6 weeks ago.

It takes while to get warmed up and sounds a bit rough while it's idling. A sudden drop in revs - like in heavy breaking with the clutch in - can cause it to stall. It won't restart unless it's in neutral, either. It's not too bad unless you're on the motorway lol

I'll check out the maintenance suggestions posted above, though. Thanks.

 

[Edb79]

Did anyone solve their issue with the intermittent stalling / rough idle ? I have the same issue on a 2006 z750.

 

[Canuck-Z]

I had the exact symptoms the OP had with my 2005 Z750s. Bike was due for a valve adjustment anyway so had this done, more than half the valves were out of spec. Once the adjustments were made the bike was like new again.