Engine cutting out between gears

[lil4399]

Long time since I have posted but I have been lurking ....

Having a bit of an issue with the old girl cutting out when changing gear. It does it 2nd to 3rd when cold (cured by letting it have 5 mins on tickover before the ride) but after a couple of hrs it cuts out between 3, 4, 5 & 6.

Changed oil, filter and plugs and it got worse. Air filter is only 8k Kms, (though it did have bird seed in it thanks to a mouse)

I had the T bag out last month and to be fair, it was covered in slimly crud. Cleaned it thoroughly, and sprayed a whole can of brake cleaner through the pump. Thought I would pull it out and check it, had the tank standing up when I took the pump out, I had a cursory glance in the tank and saw something odd.

I could see the level of the petrol but, there was another line/level half way down the petrol - the tank had three quarters of a pint of water in it. So I've cleaned it out, used a sponge to get the last bit out and also changed the disposable filter I have in the cross over pipe as that looked a bit shitty too. I also disconnected the PAIRS system last week.

I will give it a run this week to see if it is any better. Anyone think of anything else it might be?

[seth]

Get the throttle bodies balanced and get the tps and stps checked and set the Tick over to 1100rpm
Hopefully all will be good .
Might also be worth giving the fuel pump and teabag filter a clean too.
Good luck now head over to the bar and say hello to everyone 🍻

[Will14]

Long time since I have posted but I have been lurking ....

Having a bit of an issue with the old girl cutting out when changing gear. It does it 2nd to 3rd when cold (cured by letting it have 5 mins on tickover before the ride) but after a couple of hrs it cuts out between 3, 4, 5 & 6.

Changed oil, filter and plugs and it got worse. Air filter is only 8k Kms, (though it did have bird seed in it thanks to a mouse)

I had the T bag out last month and to be fair, it was covered in slimly crud. Cleaned it thoroughly, and sprayed a whole can of brake cleaner through the pump. Thought I would pull it out and check it, had the tank standing up when I took the pump out, I had a cursory glance in the tank and saw something odd.

I could see the level of the petrol but, there was another line/level half way down the petrol - the tank had three quarters of a pint of water in it. So I've cleaned it out, used a sponge to get the last bit out and also changed the disposable filter I have in the cross over pipe as that looked a bit shitty too. I also disconnected the PAIRS system last week.

I will give it a run this week to see if it is any better. Anyone think of anything else it might be?

If I was a betting man I would say that you have probably already found the cause, maybe a good idea to run some injector cleaner with the next fresh tank of petrol to clean the system up, and check the contacts on the clutch switch they can come loose and get a bit of crud on them which can cause similar issues to what you describe 

Cheers

Pete

[Hooli]

I'd go with balance the throttle bodies & check the vacuum pipes as well as what you've done.

[KiwiCol]

With having water in the tank / fuel lines, how about putting some ethanol fuel through?  just to clear any remaining water from the system. 

If you've had a mouse in there, who knows what the wee bugger has chewed ½ way through, there may be some wires in the loom with damage - it'd be noticeable though, you have to check the loom.

[Roo]

Have a mate with a new Toyota Levin. cost him a couple of grand when rats got into the shed and car. They chewed thru wiring looms and rear screen washer hoses..
Had to do an Insurance claim there was so much damage...

[grog]

Same brand Roo, mate had his Corolla chewed twice. 4G each time.Bought some electronic protector from Germany. Solved the problem.

[Hooli]

I seem to recall a few recent years of Ford Transit production had that issue, some environmentally friendly wiring appeared to be made of mouse food as they loved it that much.

[lil4399]

[lil4399]

Get the throttle bodies balanced and get the tps and stps checked and set the Tick over to 1100rpm
Hopefully all will be good .
Might also be worth giving the fuel pump and teabag filter a clean too.
Good luck now head over to the bar and say hello to everyone 🍻

Do I need to strip them off to get them balanced or is it a "whilst running" job?

Striped the pump & T bag, all clean. (Now)

I've been a member for years, still need me to introduce myself again as I've been a bit quiet? 😁

[KiwiCol]

Balancing the throttle bodies is quite easy & done whilst fitted to the bike & running.  You do need the balance tool though

https://classiccarbs.co.uk/product/keihinmikuni-fzryzfcbrzxrgsxrzzrcbgsktm-4cyl-carb-synchronizer

Quite a few owners have one of the above variety, they work well.  There may be a owner near you that has one?  I've got one, but a bit far for me . . .

[lil4399]

Balancing the throttle bodies is quite easy & done whilst fitted to the bike & running.  You do need the balance tool though

https://classiccarbs.co.uk/product/keihinmikuni-fzryzfcbrzxrgsxrzzrcbgsktm-4cyl-carb-synchronizer

Quite a few owners have one of the above variety, they work well.  There may be a owner near you that has one?  I've got one, but a bit far for me . . .

It's not THAT far, you could have a little afternoon run to here 😂😂

[lil4399]

Well, weather good enough for a 300km run and.....

Engine continues to cut out, and just to add a little excitement, when the engine cuts out (say 5th to 6th) and you dump the clutch, BANG a backfire that terrorised the riders behind me.

Cue EVERYBODY dropping back.

Tickover is shite, ( 600 - 700 rpm) any quick way to increase the tickover in the manual?

[Will14]

The idle (tick over) is straight forward to adjust, left hand side of bike just below the plastic side panel you should see a knurled round knob, turn it one way and it increases the idle speed, the other direction reduces it - you need to aim for approx 1100 RPM but do it with the engine up to normal running temperature. To low an idle speed and the bike will cut out for sure

[Eric GSX1400K3]

Adjusting idle is one thing, but the throttle bodies need to be rebalanced and tps and stps set correct, then idle adjusted to 1100rpm at normal operating temperature.