Very rich running!

[Eric GSX1400K3]

That's the MAP (manifold absolute pleasure) sensor.

  dunno about you, but that's the funniest thing. Wish I had one of those on my bike.

[grog]

Running rich, you said Speedy only when fully warmed up. Could be your clue. Inlet Air Temp sensor or Eng Oil Temp sensor could be culprit. Tests for both in manual. Just seems logical. Spark plugs not the cause, theyre just black because too much fuel. A new set good idea but they last a long time in modern ulp motors.

[grog]

Exactly Eric, IAP sensor is 13.

[Hooli]

That's the MAP (manifold absolute pleasure) sensor.

  dunno about you, but that's the funniest thing. Wish I had one of those on my bike.

That'll teach me to write on my phone when not fully awake 

[Eric GSX1400K3]

Agreed that the IAT or EOT sensors are faulty, or a loose connector.

Tip to get the plugs clean again, put the blackened ends into the blue part of the flame on your gas BBQ for say 20 to 30min. All the carbon and soot will burn off, then let them air cool back to ambient. Then check them for cracks in the ceramic. A new set of std plugs is not that expensive though

[grog]

You are kidding Eric, in the bin, get new ones. Not worth the effort.

[Speedy1959]

Brilliant.
I shall test the 2 sensors mentioned later when I get home.
I'm at work now so does anyone have the pages to hand for testing the sensors?
I am assuming they are testing by looking at the resistance readings.
S.

[Hooli]

These do ya?





   

[Speedy1959]

Bloody Hell Mr Hooli !!!
Absolutely spot on.
I REALLY do appreciate your help and advice, and obviously the collective knowledge of everyone who contributes on this forum. 
Seriously, thank you all very much.

S.

[Blubber]

How is this going?

[Speedy1959]

How is this going?

Hi Mr "Blubber",
I havent ridden since Thursday after doing the various checks..
I shall ride to a Yamaha dealership (nearest bike dealer to me) Saturday morning for the new spark plugs..
Once its running something like I intend to synchronize the throttle bodies..
I will keep this post updated with all the various outcomes..

Friday night is multiple G&T night so I dont trust myself to work on my bike whilst I am artificially "Happy"..

Thanks for asking Mr Blubber.

S.

[Speedy1959]

Hi all,
If you remember on Thursday I did several checks and cleaned the Camshaft position sensor..
I didnt get chance to ride on Friday but this morning (Saturday) I went to Fleetwood for the Spark Plugs..
Keep in mind when you have this sort of problem you are highly sensitive to every aspect of the engine and how its performing!
Started up fine.. I did however notice like a ticking sound coming from the very top of the engine in the area of the plug leads!!
I have heard this once before many years ago on a car I owned. It was arking plug leads!!
If my bikes leads are arking this could well explain the misfire I can detect.
Can anyone tell me if the Plug caps are replaceable on the 14's?
I think I should think about testing the resistance of the coils..

About half way to Fleetwood I was riding in 5th or top at around 30 mph.. I would never normally ride like this but I was trying to antagonize the fault to show itself..
If I was to be over the top critical I could barely detect a slight misfire on partial throttle at low RPM's.
I would say it was running at 95% spot on !!
I did go to get the plugs and I did change them all..
After doing this I went with a neighbour on a ride to Glasson Dock ( https://canalrivertrust.org.uk/places-to-visit/glasson-basin ) which is about 13 miles from where I live..
Bike was very close to normal..
We carried on and rode a total of 84 miles..
Tickover is good..
Ever so slightly snatchy at certain speeds, but again I say its far better than it was..

Overall I could easily live with it how it is now...
But if I can be bothered I need to go for a night ride and look under the tank in darkness to see if I can see any leads arking.
I dont really fancy grabbing the leads to see if any are leaking !!

Any thoughts ?

S.

[KiwiCol]

The plug caps can be removed & the ends of the lead trimmed to ensure good contact.  (Direct from one of Hoolis' posts)  Personally, I wouldn't do this though unless it was proven  as an issue first.

Putting your had on the lead whilst it's running wouldn't give you a shock unless there was a problem, the shock would make you jump but not harm you & you'd have a definite answer quickly.   

The slight ticking is more likely to be the reed valve in the exhaust pairs than the plug leads breaking down, IMO.

[Speedy1959]

Hi Col,
Thank you for your reply..
My bike had a "Pairectomy" complete with a "Reed Valve Lobotomy"..
I was assured by the surgeon that I wouldnt have any other problems after this was done. 

Its a pity the ignition leads cant be replace (as you can on some Harleys.... And Cars).

It is looking like the procedure that made the biggest difference was to clean the camshaft sensor!

Thank you to everyone (Hooli) who contributed with answers/suggestions to my problem.

S

[grog]

A spray bottle of water will find any arcing lead.