Ricard
Well-known member
- Joined
- Jan 18, 2020
- Messages
- 64
- Reaction score
- 12
- Location
- Toronto
- My Car
- 1972 351CJ MACh1
[url=https://ibb.co/hBMVvFT][img]https://i.ibb.co/K2GWHx8/A865-E967-B72-D-4-AD0-A6-C8-F4-D3-E243-BFF5.jpg[/img][/url]
Alright, first attempt at a new thread, I’ve searched through the old threads and can’t seem to find the answer.
In the picture you can see my 351 CJ. The original air cleaner has the flapper switch (red arrow) and whatever the heck the thing is that is in the green arrow? (You tell me?)
Main question, the flapper valve is always open, I tried testing it by disconnecting the vacuum line from the green arrow um ... thing? And connecting it to the flapper valve, all it did was actuate the green arrow thing again as I heard a click and saw it move, but the flapper valve seems to stay open? Is there a better way to test this? To be clear, even with the vacuum disconnected the flapper stays open
I’m hoping to get the car to sit at cold idle a little more reliably, warm idle... sits and purs, cold idle like all old cars, not so much.
The car has a Holley carb with a BS electric choke, and the manifolds have been changed for headers, if this makes a difference?
Cheers,
Dave
In the picture you can see my 351 CJ. The original air cleaner has the flapper switch (red arrow) and whatever the heck the thing is that is in the green arrow? (You tell me?)
Main question, the flapper valve is always open, I tried testing it by disconnecting the vacuum line from the green arrow um ... thing? And connecting it to the flapper valve, all it did was actuate the green arrow thing again as I heard a click and saw it move, but the flapper valve seems to stay open? Is there a better way to test this? To be clear, even with the vacuum disconnected the flapper stays open
I’m hoping to get the car to sit at cold idle a little more reliably, warm idle... sits and purs, cold idle like all old cars, not so much.
The car has a Holley carb with a BS electric choke, and the manifolds have been changed for headers, if this makes a difference?
Cheers,
Dave
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