Hi guys my new 68 beetle has a 1916 engine with twin kadrons and a 2 1/2 or 3 inch exhaust fitted, when i've backed of the accelerator or rolling downhill the engine pops and makes a few noises which i don't mind that much but think that it is running a bit rich. I'm not too sure how to adjust the carbies yet but willing to have a go. Also i might as well get a service done to check everthing over, is there anyone recommended in Sutherland area who won't rip you off?
Thanks

hey mate - look forward to seeing you around. YOu bought the black bug?

YOu may need a simple tune - normal mechanics generally get it wrong. There is a veedub place at kirrawee, but i have no experience with them - some guys on the forum are good at tuning dual carbies - im sure a nice case of beer or some spirits would tempt some to help you out.

i had twin Kadrons on a 1600 with no problems - there not that bad are hey Dave? Can't you buy any Carbie that hasn't been built properly (empi webers, or bad rebuilds)

my last kombi had the same problem if i didnt get the points gap just right, im no expert but its a nice easy one to check

Kadrons can be really frustrating to tune especially if they have the shitty stock linkage

popping on overrun is more a lean condition in the idle circuit, timing retarded to much or more often than not the zorst leaking somewhere and 9 times outta 10 its those useless heaterbox joint donuts

I have been running twin kadrons for about 10 years trouble free (set and forget). I have had more elec probs by far. Could be as simple as a blocked pilot jet if happening when backing off.

yeah the poping and farting is normal it gives your vw character, its even more fun when one side linkage falls off.
PS Why pull something apart you know nothing about.

I wasn't going to just pull them apart, just adjust the screws a little to see if it makes much difference. Like i said i don't kmow much about the mechanics of an engine. I'll try the place at Kirrawee (Veedub Classic) if they have no bad reports. How do you know if you have electronic ignition? Might be a dumb ? but hey, i'm a begginer.

No Mick058, i got a cream one. Will post photos later on maybe this weekend. I thought the black one wasn't the best for my girlfriend as the clutch was really hard and changing gears was a bit of an effort too.

I run a 1916 with twin kads and it does the same thing, I've had it on the dyno and everything is perfect, Mixtures timing jetting etc.... I run points also, stock bosch blue coil, 009 dizzy. I had webers on it previously and i have found the kads to be an absolute pleasure! Soon as we put them on I actually had more power. My webers were not really right for my motor though, I'm sure had they been a matched pair i would've had more luck. I'd stick with kads if you don't know much about carbies, But thats just my opinion, coming from someone who doesn't know much about carbies either, After pulling them down once to check jet sizes i could do it anytime as they are pretty straight forward compared to webers. good luck!

And pop the top off the dizzy and if it don't got points it's electric.

you don't need to pull tyhem apart to adjust just for starters take the filters off and give it a decent rev than put your hand over the top of a carby makes them suck hard do this to both
its a old way of getting the carbys to suck any crap out than make sure the plugs are ok but the long term is as they say get a compu fire fitted the difference is great
good luck

Exhaust leak at the flange at the head.

Tune,balance and as Craig says check exhaust leaks or excess exhaust size. ie no back pressure.

I might check my exhaust now, come to think of it i wake my neighbours up everyday now... even the heavy sleeper i didn't wake before! I does seem to be a bit louder these days...

if it works dont fix it

popping and farting is gooooooooood! always loved the sounds of it on back off in the golf

Also check your carby manifolds are tight.

Cheers Col