webber question
 

I had my triple throat webbers balanced about 6 weeks ago and the car ran terrific. We had a hot spell a few days ago and the car started to run like a lump. Thinking I had a float problem, I took it to my Pcar mechanic and he informed me that the carbs needed to be rebuilt. I find this very strange, If the carbs needed a rebuild, Why ws it running fine a few days earlier? Am I getting the shaft here?

If you took to the same mechanic that adjusted them, why didn't he tell you they needed to be rebuilt then? Usually a good mechanic will keep you updated on the condition of things at the time he works on them.

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Marv Evans
'72 911E

I just changed mechanics. my last mechanic(the one who set the carbs) seemed a little dishonest. Who can you trust?

Where are you located? It's about $200 to tear down and rebuild the carbs. Should be done every 10,000-20,000 miles depending upon the type of crap that's in your gas. Make sure that you change your fuel filter often, and maybe even put one right before each carb...

-Wayne

Im in Canada. the shop wants $600 (canadian) to rebuild them, does that sound right?
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If you have the same crappy gas in Canada as we do in CA, then if the car sit for three or four days in the heat/sun, the gas could have boiled out of the carbs and left behind that goop that requires a disassembly and rebuild to get rid of. Long time ago you could let a car sit for weeks and no problems, but not anymore! Because of this I run my race car with Webers a couple of times a week, or I pull the jets and clean them. Good luck.

Jay, I was going to tell you to buy a rebuild kit and do it yourself like I did http://www.pelicanparts.com/ultimate/smile.gif But I've just done this and if you've read my current posting, all is not well http://www.pelicanparts.com/ultimate/frown.gif

I still say give it a go yourself!

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John Forcier
69 911T

YOu can rebuild them yourself. This site has a good parts diagram of them. ONly 12 nuts hold the carbs to the car. Its usually easier to remove the manifold with the carbs. A screwdriver and 8mm nutdriver will tear them down. soak the carbs in a degreaser bath. Use an air compressor to clean ALL passage ways and jets. remove the floats and clean the bottom of the float bowls. Once they are clean, reasssemble them. YOu will be amazed at the difference. I usually do this every 3 months. Takes about a day to do.

Good luck.

Jamie

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Jamie
71 911T targa
http://www4.ncsu.edu/~jpnovak

I did some checking and the last record there is for any carb rebuild on my car was the late 70's ! oops! I think I'll leave it to a pro, I have a habit of wrecking things when I take on jobs over my head.

Before you go nuts tearing the carbs down try pulling the idle jets out and cleaning them. They are near the top of the sides of the barrels and are sealed by o-rings. When they are dirty the car will run like doo-doo at low speeds. If you have a good set of fuel filters you should not need to rebuild the carbs all the time. Alex

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Alex has a very good point ... if you have that nuch of a problem with particulates getting to the inside of the carburetor, you have inadequate filtration, or aren't changing them often enough! Webers that are being fed a sufficiently clean supply of fuel should not need to be removed and cleaned more often than every two-four years! Fuel filters that are changed every six months would go a long way towards alleviating your Weber problems, and it isn't that hard or costly to do!

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Warren Hall
1973 911S Targa