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Originally Posted by franken
I'd guess that allows for more choke (why), or heated air coming up from the exhaust manifold to help cold idle and faster warmup. Assuming the latter, you also need to fix the flapper after the exhaust manifold and the tinfoil flexhose, which might be harder.
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Yes, my understanding is that it is the latter. There is a thermostat mounted inside the air cleaner. When it gets hot enough it stops the flow of vacuum to the actuator on the snoot.
My exhaust hose is not tinfoil btw:
Quote:
Originally Posted by franken
BTW, the flapper in the exhaust manifold typically locks up--forever.
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Mine isn't locked up. The spring is broken, but it rotates freely.
Quote:
Originally Posted by franken
I'd get rid of all of it and make the choke work.
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I have a temperature controlled auto choke. It is working, for now at least.
Quote:
Originally Posted by franken
The AC flapper has a few spot welds holding it on and a small hole you can metalwork away. Just an opinion. Unless you can figure out a way to replace the rubber diaphragm.
But the question remains, with vacuum, the air cleaner flapper stays closed? It should open.
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Sorry, I described this, but it's hard to describe with words. I'll try some photos. Mine is open by default:
I have to push up pretty hard from the exhaust side to close it:
Applying vacuum to the pot on top does nothing. The pot does not hold vacuum and does not close the flap.