Started my 63 up and the oil light stayed illuminated

all appeared normal, but then the engine began to make noise

The car is now safely in my garage.

checking the service manual, changing the oil pump is very involved

can the pump be spun through the distributor like a dodge motor to check its operation?

any other insights it advice?



Views: 499

Reply to This

Replies to This Discussion

If the valve has corrosion on it, it needs to be replaced. Very tight tolerances are in play here, and sanding anything off will only make it worse. 

I have temporarily closed up shop due to moving, but others will have a good used valve for you. 

It does not take much debris to prevent the pressure valve from working correctly 

The valve has caused many problems with new engine builds getting stuff in it when working on the rebuild 

Last thing you want is  oil pressure problems with a new engine start up to shorten engine longevity 

l know you can put 64 429 oil pump gears in a 63 390 but may need a machine shop to do that 

They increase oil volume some 

You will be looking for score marking  damage on the front engine cover housing internal channel that may need a machine shop repair for the wear found there on its walls 


Russ has some good experience having had some of the front coves repaired 

Do repair yours if needed  as the front cover is starting to be a difficult part to find in any condition these days 

Hi all

took apart the oil pump housing

the cover has light scoring and the regulator piston is stuck

am attempting to free it.....

once i have that sorted, I can put it back together and attempt to crank the motor

do I have to load the gears with gear oil to get it to suck properly?

  Hello Mark, When I first got mt 1964 convertible home I took off the oil pan to check out the bottom end of  the engine. Cleaned out the oil pan sludge,found small pieces of plastic from the timing gears and checked out the main bearings. Cleaned off the oil pick up screen .After putting it all back together the oil pressure light stayed on and it started to rattle a little. Cut it off immediately . Took the cover off the oil pump and hand packed it with petroleum jelly and put the cover back on . The light went off and the rattle of the lifters went away. I primed the oil pump so it would have suction to pick up the motor oil . There are two gears inside the oil pump . You can only replace one of them with the engine still in the car .Just not enough room to get both out . Good luck my friend 

You will need to prime the oil pump before starting the engine.  You can pack the gears with petroleum jelly or pour oil down the oil filter tube.  I pour oil down the tube. I take the oil filter housing off with the 3 bolts.  There are 2 holes, so pour oil into the front hole. 

Thank you to all for your advice and help

I soaked the cover plate in ATF last night and gently tapped on the cylinder

at some point, whatever was holding it in age open position gave way, and I was able to fish it out

I sanded the bore with 2000 grit and did the same with the cylinder

oiled it all up and packed the pump with axle grease

reassembled it all and fired her up

after about 5 seconds and a couple of clicks coming from the old girl the oil light went out

a slight clicking can be heard appears to be dissipating as the oil warms and circulates.

i dont know whether anyone has or knows of the proper oil pump tool to allow one to turn the oil pump without running the engine, but mine looked like a round rod with a flat spot on one side

the keyed one I borrowed from my local shop did not fit

i tried several sockets from my set and none worked either

again.....thanks everyone 

Congrats on the fix. I'm sure you are glad the front cover didn't ave to come off!

You're right about the shape for the oil pump tool. I made one from an old tent pole I had laying around. Not pretty, but it did the trick.


Russ  or Jason have   and uses the correct tool to turn the dist which you may want to have for the future 

Do be extremely careful with the socket end coming off the ratchet extension if you go that route 

If the socket gets detached from its extension it will fall into the engine and the front cover will then have to come off to retrieve it 

Others have spot welded the socket to an extension for that reason 

Just a heads up 


Glad your engine is back in action 



  • Add Photos
  • View All


Our 1963/64 Cadillac Chapter Store is Open!

Started by Jason Edge in Chapter Discussion. Last reply by Jason Edge 8 hours ago. 2 Replies

Dave Leash, the CLC Sales & Marketing Rep,  has set up our own…Continue

Dash Lights

Started by Mark Borer in Restoration Discussion. Last reply by Tony Cassata 12 hours ago. 7 Replies

L+GJust went thru the dash compartment replacing all the burned out light bulbs.Everything is now working but am unhappy with the amount of light on the left side of the speedometer (compared to the…Continue

Transmisson Rebuild Time?

Started by Logan Robb in General Discussion. Last reply by Logan Robb 18 hours ago. 4 Replies

I've posted about this issue in the past and I thought I had it resolved. It would appear I do not as it has reared its ugly head again. My TH400 in the 64 Fleetwood has an intermittent problem of…Continue

Today's project, radiator overflow system

Started by Joe DiIaconi in General Discussion. Last reply by Kurt yesterday. 4 Replies

Installed a radiator overflow system. Could not have been simplerContinue

Blog Posts

Lower Front End Ball Joints

Posted by Logan Robb on May 11, 2023 at 9:04am 7 Comments

Good Morning all! 

I took the 64 into the shop to have some adjustments completed and in the process decided to have the lower ball joints replaced as was recommended the last time I had it in. I ordered the parts and came into the shop. They quoted me nearly $500 to replace those lower ball joints requiring nearly 4hrs of labor. Now this is a reputable shop and they know me by name here and they will continue to get my business. I am just questioning what on earth is…


1964 power steering sector rebuild

Posted by CHRIS CARLSON on March 20, 2023 at 11:32pm 3 Comments

 I'm having my steering sector rebuilt, and considering changing it from 20-1 ratio 4.2 turns lock to lock to 3.5 turns lock to lock @ 16-1 ratio, If i change from a 3 1/4" box to a 3" box i could have a 14-1 Ratio steering response would be faster, shorter distance to turn the wheel to get a response,   has anyone done this? and how do you like it? thank you

1964 Daville dashboard clock

Posted by Willem Bol on March 13, 2023 at 11:33am 2 Comments


Can somebody help me finding a dashboard clock  for my 1964 Cadillac DeVille Convertible?

Thank you in advance,

Willem Bol

The Netherlands

Does anyone know where I can get the bushings for AC compressor mount on the 429?

Posted by Robert Schles on February 21, 2023 at 11:45am 2 Comments

I've looked at the usual rubber sources but couldn't find any. 


  • Add Videos
  • View All

© 2023   Created by Jason Edge.   Powered by

Badges  |  Report an Issue  |  Terms of Service