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Discussion Starter #1
I've got two problems, but I'm not sure whether they're related. First problem is with idle speed. When the car is warm and I shift into reverse (C-4 auto), the idle speed increases to a high, constant rpm. Doesn't do this going into neutral, drive, or park.

Second problem is a fuel leak on my Autolite 2100, either at the accelerator pump or power valve cover. The carb was rebuilt about 6-8 years (~25K miles) ago.

Are these related? Do I need to rebuild the carb? What about the idle speed? Thanks.

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[color:green] '67 cpe, daily driver </font color=green>
 

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Try getting the diaphram that goes in the front. might solve the problen. I found this part in the little red "help" cards found at autozone, Pepboys etc.($2.99) Your leak is afully close to the distributor isint it, would not want a fire would you? This part should seal the leak if it is there.

John


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Trans...try two things...
Disconnect the kickdown linkage at the carb...make any difference?

Disconnect the vacuum hose for the vacuum modulator and plug the port....eh? *G*

Carb...your finger will tell you which place is leaking....dry the area with a paper towel and feel around and look with a flashlight...in any event, get a rebuild kit and fix it...those 2100's are simple and the rebuild kits are cheap...

Pat
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Discussion Starter #4
Thanks, John. Changed the diaphragm and fixed the leak.

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Thanks, Pat. I disconnected the modulator vacuum line and it made no difference. Haven't had a chance to try disconnecting the kickdown linkage.

Now, I'm pretty ignorant about transmissions. I thought the trans wouldn't shift without the modulator. What's that thing do, anyway? The purpose of the kickdown is also a mystery to me. Can you explain a little? Thanks-

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Modulator....when you disconnect it, the trans thinks it is at wide open throttle (low vacuum)...it'll shift, but at a high rpm (that's when the governor pressure will overcome the throttle pressure)

If you get a trans manual, it'll all become crystal clear..*G*

Kickdown linkage operates a valve in the trans to downshift it when you floor the gas....I thought maybe, if it was sticky, that when you shifted into reverse, it was opening your throttle a bit...

Keep trying! *G*

Pat
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