Ar funny idle

[amturnham]

What gives you that idea?, they can be tested with a battery, you should hear the solenoid opening and shutting.
I thought the same thing when I had an AR, and it was not the case.
Have you tried richening the pilot mix to see if that makes any appreciable difference.
Are all other variables in stock and serviceable limits?
The stupid push/pull throttle on the AR's can be problematical, I took the return run of my TTR, with no detrimental effects, in fact the throttle now springs back much more definitely.
Mike

You are right checked both solenoids and both click
So tst power to both of them and theres no power there when bike is running aaaaaaargghhh!
What does that mean power valve box knackered?
Please dont say ECU?
HELP

[knackeredMk1]

Wouldn't have clue where to start but I assume you have a copy of the AR manual .

[amturnham]

Yes I do but as everyone knows not much of a manaul. Was looking at wiring diagram and got very scared

[knackeredMk1]

I don't mean the LT one. I was thinking about the full AR service manual in the FAQs............

[fallenmikethebike]

I never solved the tick over issue on mine, and sold it as was.
The best I managed after much cleaning and fettling was a reasonable flutter, the tick over screw from memory is a left handed thread.
As stated, you could try richening up the pilot mix, and a check of the float height.
Is the plug the right colour?
Mike

[amturnham]

Yer the plugs looking good, but niether of solendoids recieving power but have managed to bodge up idle set up to idle as a temporay measure, are all power vlave controllers the same, could i use one off a mk 2 or mk 3?
Just hope its not a ecu problem.
thanks

[Active Rascal]

The PV servos are the same across mks. If the solenoids aren't faulty and work when tested on a battery then it's obviously the signal or a wire fault. The tickover system feeds into the kill switch, ECU, TPS on carb and both solenoids are linked to each other.

First thing I would do is do a basic continuity test across all wires. Get yourself a wiring diagram, although the colours are obvious and easy enough to follow without. The AR manual is EXTREMELY useful.

Basically I think it is when the throttle is in shut position, and revs drop below 1300 RMP the 3 way sol (ID SOL) opens to the path to the intake rubber, creating a vacuum against the diaphram and lifts the throttle slide a few mm; enough to idle. This vaccuum is held by the non-return valve (red and white plastic) which is also worth checking. This is only if the ignition is on and kill switch is set to 'run'. As soon as you crack the throttle, the solenoid switches to atmospheric pressure, which releases the vaccum. You can also check that all the hoses are mounted correctly, and nobody's piped them up wrong.

Check the basics first, but if it idles enough to keep the engine alive, why bother too much if it isn't simple to find?

One last one is check you have sufficient free play in your throttle on both full locks.

Shaun.

[amturnham]

Hi, thanks for info, I am putting my money on the but that comes off the carb but will have a good look over today. So potentially it could be any of the parts which the wires run to
Thanks for help guys

[Active Rascal]

You will find your fault by a process of elimination, are you sure there's no power to the solenoids when bikes running? As soon as you crack throttle you should hear it tick twice I think. Again, when you shut throttle and revs drop below 1300 it will tick again.

The problem is either mechanical or electrical. Try as above first with your seat off. If electrical, continuity check all wires first, and electrical plug conditions and connections. If they're all good, perhaps someone local to you may be kind enough to lend components ie ECU to test? Swapping one item at a time. To test the TPS you would have to swap the entire carb, however if your PV works properly, this would suggest the TPS is not at fault.

Mechanically wise there could be an air leak or an error on installation.

Let me know how you get on.

Shaun.

[amturnham]

Hi Shaun,
I have checked with contiunity tester on both with bike running and no power showing, Will check all wiring and take apart clean and reassemble wiring but I do have a spare power valve actuactor thing could I swap that over and see if its that. If I cant find fualt could I by-pass the two pipe vacuum solenoid so its always sucking the diaphram up or wont this work, adverse effect?

Thanks Aaron

[Active Rascal]

The problem with doing what you have suggested is that when going downhill and you shut off, the bike will try to accelerate making it difficult.

HOWEVER, I have only just read your whole post, and it's interesting that you say the two pipe solenoid is connected to the top of the diaphram.... this should not be the case!!! If you send your email address I will email diagrams later when I get home of how it should be set up. The 2 way solenoid, which is the slow air jet control solenoid (SAJC SOL) whould have one going to the pipe at the top of the float bowl, which if you look inside your carb is your actual slow air, or pilor system air intake. The other should go to the boost bottle.

The three way solenoid goes to the boost bottle, diaphram and intake rubber (via one way valve).

Hope this helps.

Shaun.

[Active Rascal]

PS you won't get power with bike running until you open the throttle, or upon start up. When the bike is idle the sols won't do anything (as far as I know).

[amturnham]

This sounds a bit dodgy, geezer who owned this bike was one of those "a little bit of knowledge is deadly" types. I am just trying to get it running nice

Cheers

[Active Rascal]

My apologies it's 2,300 RPM; not that that matters too much. Also, not 100% on my last statement about the power thing. I've emailed you the important bits out of the AR manual which should ensure you have it all piped up corrrectly.

Hope it gets sorted.

Shaun.

[amturnham]

Update
Everything works as should now. Active Rascal been a huge help and so has everyone else.
All pipes were wrong but sorted it out now and am amazed how that little diaphram works.
Very unique.

Cheers guys