Trottle body STPS motor

[Eric GSX1400K3]

Bugger.  Im sure you would have checked 1-2 against 3-4, theres the two spindle screws that lock the butterfly shafts together, i use those to firstly ensure the butterflies open in sync, then double check i get the same tps readings when manually opening 1-2 and 3-4, same for the stps.

Im also sure you would have ensured that the plug leads are the right way around (its easy to mix up 2 and 3) and that they are seated properly on the plugs.  Also, ive forgotten how many times ive had the tank back on,only to remember that id forgotten to reconnect the maf connector that sits directlu under the tank and the vac hose that runs to the joiner and other 4 smaller holes.  Now i double check everything. 

It was running before, so it will again, persevere, it will be worth it.

[grog]

Agree, it was running before so something amiss in what you've just done.One more go👍

[KiwiCol]

wouldn't have the plugs cross wired?

[Idh]

wouldn't have the plugs cross wired?

I will check but I have not had them off.

[Hooli]

Just a thought as someone mentioned plugs. You've not knocked a coil connection off while doing the TBs have you?

[Idh]

And so the saga ends!
I am in love again!!
From last post, she was running on my 2 or 3 cylinders at best. So, my brain decided to swap back to the used throttle body I bought. From seat off, bodies swapped ready for balancing, 55 mins!
Still running like a bag of nails.
Brain clicked, checked sparkplug, they where coked up. Popped a new set in and hey presto!
As I took the pairs system out too, I think she's running better than she has in the 16 years I have had her.
So, in short, the issue started with FI error, after a lot of work and helpfrom here, the STPS motor wasn't working. Eventually found faults in the throtte body loom.
Looking at the wiring,the connectors are cracked and the main grey one actually fell apart,so age is catching up !
Thanks for all the help and support guys. Would never have done it without you
I am so happy!!!!
 

[Hooli]

Hurrah for the fix!

You should have at least two weeks to enjoy it now before they start salting the roads 

[Eric GSX1400K3]

Awesome mate, now ride the wheels off it.

[GSXKING]

off to you for persevering 
I'd never have undertaken anything you've done and documented here.
Future seekers of problem fixing will be knocking on your doors.
Well done 

[grog]

Top job Mate 👏👍

[Idh]

Thanks all.
Now onto Tilly, my 1966 Triumph Speed Twin and an oil leak.

But that's another forum!

[Hooli]

Tilly is gorgeous & they all do that sir!

[grog]

Old Trumpy that doesn't leak😂 Nice lookin bike.Not much else I like about them.Yeah, I have owned, 750 Bonnie, slightly better than 850 Commando.Triumph leaked oil into primary case, 650 had a seal, 750 was a total engine builder, sealed bearing. Only had a 650 manual, cam timing marks were diff 750. Nightmare but got there.

[GSXKING]

I remember my late Dad hypothesising that the older British motorcycles were designed to leak oil due to crankcase pressure. Having only ridden some of them for short distances I can confirm I had oil on the shins of my boots from even that. Laverda was an exception, as they had a crankcase breather all those years ago. 

[grog]

Laverda Italian