Quote:
Originally posted by rgnprof
I have been reading about these carbs and I know they are complicated, but is there something I can do here? Does anyone know a good Merceds mechanic in OKC? Thanks.
Ryan
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I'm sure you have probably read some of my posts then.. if I were in your area I'd be glad to come over and give you hand ;-)
Things to check are:
Idle speed.. If the car is still stalling after it has warmed up it could be that the idle speed is too low.
If the engine is stalling while warming up it can be helped by increasing the fast idle.
If your carbs are out of sync it can cause all sorts of problems.
You can get a tachometer for very little from practically any auto parts place and use that to see if your idle is below 700rpm.
If it is you need to sync you carbs and adjust the throttle controls on each until they are.
This is hard to explain without pictures and the one online manual I know off isn't coming through.. Get youself the Haynes manual for your car you can it from amazon.com or use doff ebay.com
Basically after disconnecting the throttle linkage and the link between the two carbs you adjust the the throttle thumbscrew on each until the correct RPM is reached and they are in synch.
You need to either use a length of hose to listen to the choke on each and when they sound the same they are synched or use a synch meter. The meter can be gotten from jcwhitney.com but you need a hood adapter from some other place I can't recall.
The fast idle screw is on the automatic choke of the front carb.. it is kind of hard to adjust because you can only see if you look up at it from below with a mirror or have the throttle pushed all the way in. Turning it clockwise will increase your fast idle during times when the engine is cold.
If this sounds too complicated then call all the mercedes shops in your area and ask them if they have first hand experience with these carbs and what they charge per hour.
Although I highly reccomend learning to do this yourself as it is a good idea to tuneup these carbs yearly or as they get out of whack. I have been doing mine twice a year. It's really not that hard once you get a better understanding of their anatomy and operation.