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lclark0624

Senior Member
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Hey, after all this time we are running, with power. Although I had checked the diaphram at least 6 times, I didn't see a pin hole leak until I held the thing to the light. I also got the water choke spring adjusted by putting it into boiling water and then remarking it.

HOWEVER, The only problem is that it's running away. It'll go into the red if I don't shut it off first.

I adjusted the needle at the end of the piston all the way down, but that had no effect.

Any bright ideas how to stop this runaway? /ubbthreads/images/graemlins/frown.gif
 
Glad to hear you got it sorted =)

What do you mean by 'it's running away'?

-D.
 
sounds like maybe a vaccuum leak?


mark
 
D,

By running away is I have no control of the rpm's When I start the engine it goes directly to the max as if someone is standing on the foot petal, only it's disconnected. The throttle has full motion.

Could it be that the needle attached to the piston is not seating properly so it doesn't shut off the flow of fuel?

Mark,

Could be, maybe?
 
Could be the throttle return spring are not attached. There is one on the carb itself that holds the butterfly shut, but could be worn (not springy enough) or missing, and then there should be two that connect to the air cleaner. If all of these are not on or workding, then the butterfly will open as soon as the car is started from engine suction. Another thing that will hold the throttle open would be the idle set screw and possibly the fast idle cam in the choke. This sounds like something is holding the throttle butterfly open at idle. With the car shut off and the air cleaner off, lift the piston and you should see the brass butterfly plate. It should APPEAR to be fully shut, if it looks like it's open more than just a bit then something is holding it open. It should be slightly open at idle, and only the slightest amount.

It's unlikley that the needle isn't seating properly. If the piston has the full range of movement then the needle is seating. With the car off, the piston should be VERY close to the jet bridge at the bottom of the carb.

-D.
 
You're not goint to believe this!

After numerous times trying to start the engine and having it "run away", I started it and it started normally. I did nothing.

It runs rough, but the needle us screwed all the way down. I'll leave it until the morning and adjust the piston needle.

Maybe, just maybe all will go well tomorrow. If it does, I'll post the last message on this subject.
 
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