Misfire

[seth]

I've done all the bikes with the blanking plates and bolts in the holes .others do it by blocking the holes in the pair's castings on the head .
The way it works is via a vacuum from the throttle bodies it opens read valves in the head letting extra air into the exhaust just after the exhaust valves to help burn any unused fuel in the exhaust to help clean up emissions.
Main thing when removing is to remove the rear valves from there mountings as they have been known to break off if left in ,also block the 2 holes in the airbox as this allows unfiltered extra air into the system making the bike run very rich and the pipe from the throttle bodies as that makes them run shite if not sealed .
If you can't get a plate kit to remover the pair's for a gsx1400 the kits for a hyabusa also fit as it's the same system used on them.
Good luck glad you found the problem.
All sounds very complicated but is really straightforward and simple to do .

[shanered6]

there is a step by step guide and options on how to do it on here and loads of threads just have a search .

[seth]

Link for removing pair's
http://gsx1400owners.org/forum/index.php?topic=310.0

[Simonic]

Thank you so much gentlemen for all your help. I really appreciate it.
I'll follow the instructions in the link and do the job

[grog]

Simonic, yeah two choices really. remove the whole thing, fit blanking plates etc. ive never got around to that. my air hose to pairs has been blocked for lots of ks, ball bearing from memory. just dis ables it. good or bad way, no idea, but works.

[Blubber]

Today I swapped the coils over and the problem did not travel. Then I disconnected the PAIRS. This has cured the problem. I just taped over the ends of the pipe and the tube on the head and it stopped popping straight away. Just to make sure I reconnected the system as the problem came back. I know a lot of you guys disable the system, but how does it work? Do many of you use the blanking plate option or just block it off? I'd be interested to know. Thank you so much for your help everyone.

- Did your problem with problem nr 2 beiging colder also disappear?

That would indicate the PAIRS system has a preference for nr 2.. not that is a bad thing... just wondering.

[seth]

Just for info the vacuum hose that operates the pair's stuff is fed from number 2 cylinders throttle body handy to know if it's affecting how the bike runs.

[Andre]

At first I plugged the hoses by the PAIR valves and the air box. Added a plug in the hose by the throttle body for good measure.

[grog]

blocking hose from air box disables, nothing can enter. cannot work without it. no need to block vacuum hose.

[Andre]

Certainly not needed to block the vacuum hose to disable the PAIR but gives the diaphragm in the cut-off valve a break and "quiets" the throttle body.

[Simonic]

[/quote]

- Did your problem with problem nr 2 beiging colder also disappear?

That would indicate the PAIRS system has a preference for nr 2.. not that is a bad thing... just wondering.
[/quote]
Yes it did .All warm up equally now

[seth]

If you don't plug the hose on the throttle body then you have a vacuum going out to the air so the bike won't run properly .

[Hooli]

Just for info the vacuum hose that operates the pair's stuff is fed from number 2 cylinders throttle body handy to know if it's affecting how the bike runs.

No3. I've just walked outside & checked as that sounded wrong, it's the hose nearest No4 on No3 TB.

[Hooli]

If you don't plug the hose on the throttle body then you have a vacuum going out to the air so the bike won't run properly .

I think they mean if you leave the PAIRs valve etc in place but block the hose from the airbox then you don't need to block the vacuum hose as it's still sealed by the PAIRs valve.

[seth]

That makes sense
Cheers