Warren - Ya got yer ears on?

In case you're not from down south, that's CB talk for "are you listening?"...

Warren - or any other expert:

I chatted with Warren couple weeks ago about some Zenith NDIX carbs on my '62 356/B. Seems the car was running poorly and while in gear would not gain RPMs and speed. Warren said, since the car had set up for 3 years, to remove the carbs, soak them in carb cleaner to remove the crap, and put 'em back together with new gaskets and give them a try.

Thinking I might screw up the most simple of tasks, I paid my local wrench to supervise me. He did most of the work and the carbs looked beautiful when I mounted them last night. As a preventative measure, I replaced the dry rotted fuel lines, fuel filter, and cleaned the screen inside the fuel pump as per the owners manual. All was well and it started fine, THEN>>>>>>>

the engine idled at 4000 rpms! I thought "no problem, I'll just adjust the idle screws and the fuel/mix screws." So I backed the idle screw all the way out and the fuel/air mix screws are adjusted as per the manual. No change, 4 grand and climbing!!

My local wrench doesn't make house calls...but he said a) probably an air leak or b) the engine isn't getting enough fuel (?)

Ideas Warren / anyone??

Mark,

Doesn't sound like a lack of fuel to me! There are three possible areas of an air leak, and multiple sources for each one:

1. Balance tube between the two manifolds ...

2. Carb gasket on each manifold ...

3. Head/manifold gaskets for each of the four cylinders ...

It might just be easier to replace the two carb gaskets and four manifold gaskets, rather than try to track down the leak ... as there may be multiple leaks!

I don't remember the configuration of the balance tube ... last time I saw one was on a 356C around 1972 ... but any rubber component is suspect! Good luck!

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Warren Hall
1973 911S Targa

i would imagine that one or both of your throttles are hanging open. pull off both throttle rods and turn down speed screws, or pull carbs off again and check that. air leaks usually cause a dead hole situation at idle. you can check that if you ever get it back down there.