Fairlane/Falcon/Galaxie/Gran Torino There 1960s classics have not been forgetten, whether it is on the dragstrip or at any car show, they are still all well represented.

63 Fairlane stumbling- Can't figure out why...

  #1  
Old 10-25-2018, 10:48 PM
Junior Member
Thread Starter
Join Date: Oct 2018
Posts: 2
Default 63 Fairlane stumbling- Can't figure out why...

I've got a 63 Fairlane with a 5.0, out of an 89 Lincoln Town Car, that has been carbureted and has an ignition system out of an older model as well. Transmission is a C4.

I started to notice stumbling while in gear and figured it just needed a tune up. The tune up turned into replacing plugs, wires, distributor (with new cap and rotor), and coil. After all this, it still has the same stumbling issue when in gear.
Another thing to note, it runs fine when I start it up cold, let it warm up for a few minutes, and then drive for a mile or two. Only then does the stumble begin.
If I put it in park or neutral, it clears up.
I did notice that even when not in gear, if I rev the engine up to a higher rpm, the engine starts to stumble a little bit. Almost like it's missing all of a sudden at the higher rpm. Drop it back down and it seems fine.
It seems to have gotten a little worse now in that it will die out if I'm just idling in gear. When it first started it would just idle rough, but stay on.

Any ideas out there as to what this could be?

Thanks everyone.

 
  #2  
Old 10-27-2018, 04:39 AM
Senior Member
Join Date: Jun 2010
Posts: 9,252
Default

This may or may not be the problem.
It does sound like the engine might be starving for fuel at which point you would need to confirm the carburetor is working correctly.
What did the old engine do, and why did you replace it?
 
  #3  
Old 10-27-2018, 10:10 AM
Senior Member
Join Date: Jan 2007
Location: Yorkshire, NY
Posts: 2,177
Default

Another thing to check is the coil. A weak coil will start the engine because the timing is retarded, but has trouble firing the plugs under compression when the timing goes advanced.
 
  #4  
Old 10-27-2018, 10:21 PM
Junior Member
Thread Starter
Join Date: Oct 2018
Posts: 2
Default

Figured it out, and I canít believe it. A simple $3 part. My PCV valve wasnít working correctly.
I never would have thought that would cause an issue like this.

Thanks anyways guys.
 
  #5  
Old 10-28-2018, 11:21 AM
Hayapower's Avatar
Super Moderator
Join Date: Jul 2006
Posts: 6,310
Default

Thanks for the update..
 
  #6  
Old 11-05-2018, 05:43 PM
Junior Member
Join Date: Oct 2018
Posts: 4
Default

I just saw this thread and was thinking it had to do with vacuum. Since it only acted up in gear, I was going to suggest that the vacuum line that goes back to the transmission could've come loose. I've had that happen and it shifts funny as well as kinda staggers at idle. Glad you found it though!
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
934.9
Ford F-150
0
04-17-2015 09:09 PM
Joelb58
Ford Sport Trac
7
06-07-2013 05:20 PM
jasen
Ford Ranger
0
02-18-2012 04:31 PM
theonlykb
Ford Focus
6
02-13-2012 07:58 AM
zr800
Ford F-150
1
03-13-2008 10:30 PM


Thread Tools
Search this Thread
Quick Reply: 63 Fairlane stumbling- Can't figure out why...


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.