Low power & pinking after carb overhaul

[kevtherev]

Vacuum also assists the brakes, opens the second throttle, opens the choke under acceleration when engine is warming up, operates the air box flaps,
Vacuum rocks!

[bigherb]

It's also very powerful
http://www.youtube.com/watch?v=Zz95_VvTxZM" onclick="window.open(this.href);return false;

[Smosh]

Thanks guys. I think I get it. I may have to read the posts a few more times to truely understand the why!

[itchyfeet]

The vacuum is taken from a port just above the throttle butterfly where the vacuum is most at part throttle

Ah, of course, the dizzy vac isn't connected to either of those on the base is it. I had only looked at a bare carb, not at the van

mine is and so are other vans I have looked at with a 2e3, dizzy connects below throttle plate next to air filter connection

in the pic they are dizzy on the RHS port (side of the dizzy in van) and airfilter on the LHS, (well it was until it was removed and blocked up)

I have placed my finger over the hole inside and blown down the pipe and they don't connect elsewhere, straight through BELOW the throttle plate for both of them.



wow just found a (stolen) old pic of my carb on an LPG forum, bit dirty back then but the pipes are visible all the same....

[ghost123uk]

You swine

I am just going to have to go and look at mine now

It's all that moving bedding, pillows and storage draws etc

[kevtherev]

You swine

I am just going to have to go and look at mine now

It's all that moving bedding, pillows and storage draws etc

I love my autosleeper...it is so easy to get at the lid, matress off and lid off, all the camping crap is in the high top

[bigherb]

You swine

I am just going to have to go and look at mine now

It's all that moving bedding, pillows and storage draws etc

I wouldn't bother the answer is staring at you in Itcys first picture.

[itchyfeet]

Your not a school teacher by any chance?

[ghost123uk]

I am just going to have to go and look at mine now

I wouldn't bother the answer is staring at you in Itcys first picture.

Oh heck, I know it's not that important (the conversation I mean, not the pipe location) but you said :-

The vacuum is taken from a port just above the throttle butterfly where the vacuum is most at part throttle

(bold by me)

Then we have :-

mine is and so are other vans I have looked at with a 2e3, dizzy connects below throttle plate next to air filter connection

(bold by me)

Itchy's pic shows the 2 lower pipes, which I checked on my spare carb, and as per his findings, they both exit below the flap.

Anyway, it's not important and I ain't being pedantic or owt like it, just trying to understand

Plus I think we have it nailed anyway, I think

[bigherb]

They are at different heights.

[itchyfeet]

They are at different heights.

yes but both below the throttle plate and I find it hard to believe it will make a difference, as John says not being pedantic but keen to understand

[Jokerbetty]

Hi, I have the van back from lpg conversion and fault persists. It still feels a little gutless on either fuel. It does reach good speed but there is no "grunt". I have just checked the vacuum valve on the back of the carb that opens the second butterfly choke, and found it is sticking. I opened the accelerator lever then sucked on the vacuum pipe and the valve did not move. With a little WD40 and a wiggle or 2 it seems to have freed off. I must have cleaned all of the lubrication from the carb when I cleaned and replaced seals.

Oh and surely both holes have the same amount of vacuum