WEBER GURU NEEDED

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Bud6200
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WEBER GURU NEEDED

Post by Bud6200 » Fri May 28, 2021 6:03 pm

HELLO fellow Weber sufferers
8-)
Have found recently why I have been having problems starting ....the auto choke flaps stick open after I have had it running and have to remove the air filter pan to get at it and click it shut again before attempting to start it from cold.
Obviously starts ok from warm .
How can I cure this problem .... :poke:

Regards Paul
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stevemarl
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Re: WEBER GURU NEEDED

Post by stevemarl » Fri May 28, 2021 7:43 pm

You do know when you`re cold starting you need to depress the gas pedal first to allow the chokes to close? The fast idle cam has a step in it, opening the throttle allows tghe choke to return to fully closed position. Otherwise it will stop at the step and stay 1/3 open.

Bug
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Re: WEBER GURU NEEDED

Post by Bug » Sat May 29, 2021 12:21 pm

Paul,
There are many reasons for this, assuming you are following the correct start procedure.
It is possible for the flaps to vibrate when open and eventually create a groove that they then stick in. This should be easy to see.
Another fault I have found is that the spindle which comes out of the auto choke housing and rotates the levers as the bimetallic strip warms up runs through a ptfe type liner. This can wear over time and eventually starts to snag the spindle.
Auto chokes are excellent bits of kit if set up correctly.
But you need to be sure it's operating properly over all the various cam steps and that the fast idle screw is set on the highest step.
On warm days, even when the engine is cold, the cam will not open that far, so you need to manually set it all before you start.
Sounds like yours needs an overhaul.
Don't suppose you're anywhere near mid-Norfolk or I'd happily take a look for you.

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pbar
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Re: WEBER GURU NEEDED

Post by pbar » Sat May 29, 2021 7:36 pm

Bug wrote: ↑
Sat May 29, 2021 12:21 pm
It is possible for the flaps to vibrate when open and eventually create a groove that they then stick in. This should be easy to see.
Another fault I have found is that the spindle which comes out of the auto choke housing and rotates the levers as the bimetallic strip warms up runs through a ptfe type liner. This can wear over time and eventually starts to snag the spindle.
Auto chokes are excellent bits of kit if set up correctly.

Excellent suggestions there Martin. My autochoke has been sticking of late (i.e. not closing when depressing the pedal for a cold start) and I've turned the housing to richen it to compensate as I was assuming that the bimetal strip has lost it's tension due to age (or is gummed up).

I did think of buying another bimetal coil to change it but I'll have a check on your suggestions first now I've read that.

Bug
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Re: WEBER GURU NEEDED

Post by Bug » Sun May 30, 2021 10:37 am

If it turns out to be the nylon seat in the spindle hole, then don't faff about: pull it all out (it's just a thin, paperlike layer) and stick a bit of grease in there instead.
I assume you are au fait with setting it all up again afterwards?
Also, bear in mind that the temperature will make a difference. If you sit out in the sun with it you won't get the full cold start set up quite right.
You need to be sure it's cold enough that you'll be getting the full 'springiness' out of the bimetallic spring.

Bud6200
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Re: WEBER GURU NEEDED

Post by Bud6200 » Sun May 30, 2021 8:04 pm

Cheers guys ,

Just had a quick check before starting , and the choke plates stay open after a full depression of the accelerator before cranking from cold.

Au fait ???.... :whistle: :whistle: errrr yeah of course I am .... I have a Haynes workshop manual :D :D :D ....I am sure I will shout up if I
get stuck 8-) .

Probably just go for a complete overhaul ....any idaes on best place to get the parts from.

Regards Paul :ford:

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Re: WEBER GURU NEEDED

Post by Lord Flasheart » Mon May 31, 2021 7:11 am


Gaz-LS
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Re: WEBER GURU NEEDED

Post by Gaz-LS » Mon May 31, 2021 11:22 am

Hi I had a similar problem but mind was sticking in closed position, has already said probably needs an overall, I spray a little WD 40 on the flaps on mind every so often and make sure the flaps are opening and closing freely before putting airbox back on, works for me.

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Re: WEBER GURU NEEDED

Post by Mc Tool » Mon May 31, 2021 8:28 pm

My choke flaps rattle πŸ˜€
Id rather have a bottle in front of me :beer: than a frontal lobotomy 🀯

Bug
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Re: WEBER GURU NEEDED

Post by Bug » Tue Jun 01, 2021 12:02 pm

Mc Tool wrote: ↑
Mon May 31, 2021 8:28 pm
My choke flaps rattle πŸ˜€
See a gynaecologist!

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pbar
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Re: WEBER GURU NEEDED

Post by pbar » Tue Jun 01, 2021 4:08 pm

Bug wrote: ↑
Sun May 30, 2021 10:37 am
It is possible for the flaps to vibrate when open and eventually create a groove that they then stick in. This should be easy to see.

If it turns out to be the nylon seat in the spindle hole, then don't faff about: pull it all out (it's just a thin, paperlike layer) and stick a bit of grease in there instead.

Also, bear in mind that the temperature will make a difference. If you sit out in the sun with it you won't get the full cold start set up quite right.
You need to be sure it's cold enough that you'll be getting the full 'springiness' out of the bimetallic spring.

Thanks very much for all this info Martin, very helpful. I will certainly keep it all in mind for when I take mine apart to see what's happening.

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Re: WEBER GURU NEEDED

Post by Mc Tool » Wed Jun 02, 2021 12:15 am

:applaud:
Bug wrote: ↑
Tue Jun 01, 2021 12:02 pm
Mc Tool wrote: ↑
Mon May 31, 2021 8:28 pm
My choke flaps rattle πŸ˜€
See a gynaecologist!

Ha ha , as the man said to the lady " Im no gynaecologist but I'll certainly have a look at it for you".πŸ˜†
Id rather have a bottle in front of me :beer: than a frontal lobotomy 🀯

Bug
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Re: WEBER GURU NEEDED

Post by Bug » Wed Jun 02, 2021 6:46 am

Mc Tool wrote: ↑
Wed Jun 02, 2021 12:15 am
:applaud:
Bug wrote: ↑
Tue Jun 01, 2021 12:02 pm
Mc Tool wrote: ↑
Mon May 31, 2021 8:28 pm
My choke flaps rattle πŸ˜€
See a gynaecologist!

Ha ha , as the man said to the lady " Im no gynaecologist but I'll certainly have a look at it for you".πŸ˜†
Or the amateur gynaecologist who just liked to keep his hand in. :xd:

Mc Tool
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Re: WEBER GURU NEEDED

Post by Mc Tool » Wed Jun 02, 2021 7:36 am

I thought that was a proctologist,πŸ˜† hey do you think that the gynaecologist dept and the proctology dept are right next door to each other.........I mean in the hospital ....too 😁😁
Id rather have a bottle in front of me :beer: than a frontal lobotomy 🀯

Bug
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Re: WEBER GURU NEEDED

Post by Bug » Wed Jun 02, 2021 8:14 am

Mc Tool wrote: ↑
Wed Jun 02, 2021 7:36 am
I thought that was a proctologist,πŸ˜† hey do you think that the gynaecologist dept and the proctology dept are right next door to each other.........I mean in the hospital ....too 😁😁
Possibly?
Have to have a 'this way up' label on the patient, just in case. :shock:

And as far away from the dentistry department as possible!!!!!

Bud6200
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Re: WEBER GURU NEEDED

Post by Bud6200 » Thu Jun 03, 2021 7:44 pm

All I need now is the model no of the carb.
Anybody identify it ???
:beer:

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D366Y
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Re: WEBER GURU NEEDED

Post by D366Y » Fri Jun 04, 2021 8:15 am

Looks like a 32/36 DGAV auto choke???
A wise man once said... "you can never have too many capris - buy another" :beer:
It's me, I'm the wise man.

Bug
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Re: WEBER GURU NEEDED

Post by Bug » Fri Jun 04, 2021 8:24 am

Shame I'm so far away from you really.
I reckon there's a good chance you don't need any parts at all, just a good fettling.
Fancy a little run down to Norfolk? :D

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stevemarl
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Re: WEBER GURU NEEDED

Post by stevemarl » Fri Jun 04, 2021 9:29 am

Bud6200 wrote: ↑
Thu Jun 03, 2021 7:44 pm
All I need now is the model no of the carb.
IIRC it`s stamped into the edge of the flange that bolts to the manifold? If both the throttles are same size / open together it`s a 38DGAS, if they`re different sizes and one opens before the other, it`s a 32/36DGAV

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Re: WEBER GURU NEEDED

Post by Paul G » Fri Jun 04, 2021 9:54 am

Mc Tool wrote: ↑
Wed Jun 02, 2021 12:15 am
:applaud:
Bug wrote: ↑
Tue Jun 01, 2021 12:02 pm
Mc Tool wrote: ↑
Mon May 31, 2021 8:28 pm
My choke flaps rattle πŸ˜€
See a gynaecologist!

Ha ha , as the man said to the lady " Im no gynaecologist but I'll certainly have a look at it for you".πŸ˜†
Clever people them gynaecologists, they can decorate their front hall through their letterboxes!

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