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View Full Version : Twin Weber 40's Cleaning



Tj.smith1991
11-17-2014, 06:10 PM
I've some Twin Webers on my Mk2 Jetta.

They are over-fuelling and super dirty so I'm wanting to get them stripped, cleaned / correctly working / set up and Timed.

I'm not willing to do the Timing and Set up as I'm not that clever, This is my first proper car build and I'm wanting to do as much myself. So Cleaning isn't going to bother me at all.


Help would be very useful or a guide if anyone has one!

Jlyons617
11-18-2014, 05:38 PM
If you're cleaning them inside and out you're pretty much rebuilding them. Id buy the rebuild kits ckean, reassemble them, run the mixture screws out 2.5 turns from closed ( to get running) and then take the car to get them synchronized.

Tj.smith1991
11-20-2014, 01:08 PM
If you're cleaning them inside and out you're pretty much rebuilding them. Id buy the rebuild kits ckean, reassemble them, run the mixture screws out 2.5 turns from closed ( to get running) and then take the car to get them synchronized.


Cheers buddy. Going to look into this. Get them off and start cleaning them :)

Oh Damn, it's Sam
11-20-2014, 02:32 PM
If you're cleaning them inside and out you're pretty much rebuilding them. Id buy the rebuild kits ckean, reassemble them, run the mixture screws out 2.5 turns from closed ( to get running) and then take the car to get them synchronized.

I agree with all of the above. If they're that gross, just rebuild them. You don't want to have to get back in there a second time to replace a failed o-ring just because you skimped on the rebuild kit.

Byron
11-20-2014, 03:50 PM
As others said, just get the full rebuild kit. Also get a Weber manual off eBay or Amazon. Carbs, while simple in theory, are actually quite complicated and it's easy to lose track of how something came apart.


And setting the timing is extremely simple, if you're confident in starting a carb rebuild then you should have no issues setting timing correctly.

Tj.smith1991
11-22-2014, 06:20 PM
RIght. Can i just take the webers off the engine if i disconnect the battery?

Never taken carbs off in my life so I wouldn't mind knowing that if i take them off tomorrow my engine isn't going to die.

Byron
11-23-2014, 03:50 AM
Bring the car to someone that knows what they're doing.