Hi All

just had the valve stem seals done on the 429 with the passenger side head coming off due to a broken bolt.

That is all done and back together.  Now one problem leads to another.  The engine will not idle

or idle adjust as it should.  If I screw the main large idle adjust screw in on the carter the engine still

runs - if I turn the drives side smaller idle air adjust screw all the way in the engine does not stop.

There is a noticeable flat spot right at bottom of idle on take off and the engine just is not right at least

at idle.

Is this an indication of a vacuum leak?  The problem is still there if the PCV valve is off and blocked,

same with other vacuum lines.   Hope that makes sense and I can get some advice.

John

Views: 542

Reply to This

Replies to This Discussion

Ha Ha Good One!!!!

RSS

Photos

  • Add Photos
  • View All

Forum

Burning Rubber

Started by Kim K Kaiser in 1963/64 Cadillac Specific Discussion. Last reply by Linda M. Brooks on Thursday. 5 Replies

Out of curiosity,, is the 63 64 engine capable of burning rubber off of a stop light?   Not a hold the brake and rev up and release, but from a stop, to burn rubber power?I know mine wont because i…Continue

Gas gauge only reads half when full

Started by Kenneth Barton in 1963/64 Cadillac Specific Discussion. Last reply by Russ Austin on Wednesday. 1 Reply

Hi everyone, I installed a new gas tank sender in my 63 after bench testing it and confirming ohm range on the bench.However after installing and filling it up, it only reads half full after filling…Continue

64 Brakes

Started by Jeff Donaldson in General Discussion. Last reply by Dennis P. DiBari on Monday. 1 Reply

Hi,It's time to do a brake job on my Fleetwood. When I imported my car from the US to Canada I had to have my car safety inspected before I could license it in the Privince of BC. After the…Continue

Heater Core Replacement

Started by Michael Monson in 1963/64 Cadillac Specific Discussion. Last reply by Michael Monson on Sunday. 6 Replies

I'm currently rounding up parts for a heater core replacement in my 1964 Deville.  I'm looking for replacement hoses that connect to the heater core itself.  It's a factory a/c car and has the metal…Continue

Blog Posts

1963 RHS A/C kick panel - photos needed

Posted by SK on June 2, 2025 at 2:20pm 2 Comments

Could someone post front and back photos of the 1963 right-hand kick panel with A/C?

My car didn’t come with the original kick panels, so it's a bit of a mystery to me how I should cut the backing board and carpet to fit around the A/C.

Many thanks,

-Samu

'63 Tailfin Tales

Posted by Mark Mata on February 22, 2025 at 5:00pm 9 Comments

New old stock seat material

Posted by Ray Schick on August 22, 2024 at 6:25pm 2 Comments

I bought this seat material thinking that it’s…

Continue

Loud air moving sound within carb with cleaner removed

Posted by Dave Fehrle on March 23, 2024 at 3:23pm 8 Comments

While checking my Carter carb with engine running, I took the air cleaner off and there was a very loud hissing sound of air. I placed a piece of paper over the carb and it didn’t move up or down, is this normal?

Videos

  • Add Videos
  • View All

© 2026   Created by Jason Edge.   Powered by

Badges  |  Report an Issue  |  Terms of Service