weber sidedraft maintenance

[Guest michael schliske]

I've got a '72'02 with a 292 cam and a pair of 45 DCOE's that came on the car when I got it 8 years ago. It runs strong and gets 29 mpg if I baby it along on the highway (which I rarely do). It runs a little rough sometimes, at transition especially, then the next trip it will smooth out. Sometimes going around a sharp curve seems to make it sputter a little for ten seconds or so, then smooth out. It seems there might be some junk floating around in there. I've run carb cleaner through the system several times. Are there some effective ways to clean varnish or whatever out without taking the carbs out of the car? I would rather not go through a complete rebuild if I can put it off a little longer. Thanks for any tips! 

[Simeon]

You can take the jets out and clean the float bowls with the carbs in situ. 

[KFunk]

I’ve had similar issues when the float/fuel level is too high, or low.  Hard acceleration or sharp turns slosh the fuel around, and it either doesn’t go in or it spills over into the barrel and makes it hesitate.  There’s a procedure for removing a main jet and measuring the actual fuel level with a little stick, which will tell you if this is the problem.

[TobyB]

You can also just take the tops off and dump the varnish out.

Or wipe it out with rags, etc etc.  

DON'T use the shop vac for this!!!!

 

the word "rebuild" gets tossed around freely, but realistically, there

are many levels of disassembly, and most of them are pretty easy.

And don't take any seals, unless maybe the top gasket sticks to the cover.

 

t

 

[tisalover]

Sometimes dirt, or on one occasion a fruit fly, get caught in the transition Jets. Take the carb tops off, take the Jets at one at a time and blow them out with carb cleaner if the transition is running uneven. This almost always correct the 45 Weber carburetors on my TISA. It is good to carry a Swiss Army knife and A can of carb cleaner with you.

Best regards, Peter

[tisalover]

P. S.  when I say carb tops I mean the little round cover with the wingnut on it, remember to put the wingnut on tightly, I often safety wire mine.

[Son of Marty]

Tech tip, when tuning and jetting carbs on a 02 the drivers side rubber cowl drain is a great place to store your screwdriver looks very racy and is handy to boot.

Edited March 14, 2018 by Son of Marty

[conkitchen]

14 hours ago, tisalover said:

Dig the handkerchief around the filler neck 

[TobyB]

...and I advocate removing the whole top.  6 screws, and everything's open.

 

You can easily look at your float levels that way, 

too

 

t

 

[bob02]

Peter, did you make that engine brace on for your tisa?? Looks well done.

 

 Thanks,

 

 Bob