novice question: power valve
Junior User
Joined: Mar 2001
Posts: 81
Likes: 0
From: Loomis, CA
novice question: power valve
What is the power valve? I read it is under the carb. What does it look like and what do I check for?
I read in the posts to check this as one of many things for backfiring. I have serious backfiring through the carb after new wires and plugs and timing. Shakes like it is missing. I will replace the cap and rotor next, and possibly the distributor, with the recommended packages for the Petronix ingition upgrade.
Also, would the engine even start if timed on the wrong TDC stroke?
I assumed no, because it wouldn't even start until I tried the other TDC, but now it backfires a lot. (Checked the wires about 57 times! Even moved up one and back one.) I did the escaping air test, but I am no expert.
mike
'68 F250 CS with 390 (or maybe 360...measured 3.58 stroke.)
PS. Sorry if this posts twice, but looked like I lost the first one.
I read in the posts to check this as one of many things for backfiring. I have serious backfiring through the carb after new wires and plugs and timing. Shakes like it is missing. I will replace the cap and rotor next, and possibly the distributor, with the recommended packages for the Petronix ingition upgrade.
Also, would the engine even start if timed on the wrong TDC stroke?
I assumed no, because it wouldn't even start until I tried the other TDC, but now it backfires a lot. (Checked the wires about 57 times! Even moved up one and back one.) I did the escaping air test, but I am no expert.
mike
'68 F250 CS with 390 (or maybe 360...measured 3.58 stroke.)
PS. Sorry if this posts twice, but looked like I lost the first one.
New User
Joined: Jan 2008
Posts: 0
Likes: 24
novice question: power valve
Have a look here.
http://www.users.bigpond.com/jack_stands/automotive_advice/carbie_repair/carburetor_1.html
Dennis https://www.ford-trucks.com/user_gallery/sizeimage.php?&photoid=1733&.jpg
Please Don't Ask Me Any Tough Questions,
"I'm Saving My Memory For When I Develop Alzheimer's"
78 F-150 429CJ,Silver, Explorer Pkg.
641/2-Mustang 260,Pre-World's Fair Car.
64-Fairlane500 S/C waiting for a 390-4spd.
68-Mustang 289-Sunlit Gold 80,892Mi
78-Buick LeSabre 403 4V
84 Volvo DL Wagon
http://www.users.bigpond.com/jack_stands/automotive_advice/carbie_repair/carburetor_1.html
Dennis https://www.ford-trucks.com/user_gallery/sizeimage.php?&photoid=1733&.jpg
Please Don't Ask Me Any Tough Questions,
"I'm Saving My Memory For When I Develop Alzheimer's"
78 F-150 429CJ,Silver, Explorer Pkg.
641/2-Mustang 260,Pre-World's Fair Car.
64-Fairlane500 S/C waiting for a 390-4spd.
68-Mustang 289-Sunlit Gold 80,892Mi
78-Buick LeSabre 403 4V
84 Volvo DL Wagon
New User
Joined: Jan 2008
Posts: 0
Likes: 24
novice question: power valve
No !
If you want really great information on just about anything visit my *Gallery* and have a look at the Links to web sites.
Dennis https://www.ford-trucks.com/user_gallery/sizeimage.php?&photoid=1733&.jpg
Please Don't Ask Me Any Tough Questions,
"I'm Saving My Memory For When I Develop Alzheimer's"
78 F-150 429CJ,Silver, Explorer Pkg.
641/2-Mustang 260,Pre-World's Fair Car.
64-Fairlane500 S/C waiting for a 390-4spd.
68-Mustang 289-Sunlit Gold 80,892Mi
78-Buick LeSabre 403 4V
84 Volvo DL Wagon
If you want really great information on just about anything visit my *Gallery* and have a look at the Links to web sites.
Dennis https://www.ford-trucks.com/user_gallery/sizeimage.php?&photoid=1733&.jpg
Please Don't Ask Me Any Tough Questions,
"I'm Saving My Memory For When I Develop Alzheimer's"
78 F-150 429CJ,Silver, Explorer Pkg.
641/2-Mustang 260,Pre-World's Fair Car.
64-Fairlane500 S/C waiting for a 390-4spd.
68-Mustang 289-Sunlit Gold 80,892Mi
78-Buick LeSabre 403 4V
84 Volvo DL Wagon
