I just got this 63 deville. It runs rough and clearly has

issues that need to be worked out. I have no idea where to start. I came here hoping you guys would be so kind as to walk me through trouble shooting the engine.

it takes a lot to get it started once it’s running it burns oil and if you don’t keep gassing it she stalls. It does drive but second gear is a hard shift so that probably needs work too. 

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You will cause heat damage to your starter ( burn it up ) and battery if you hang on the key the way you are 

Let the starter cool after trying to start 15-20 sec 

Do a very complete Tune Up —including the ignition wires if you do not know the engines maintenance  history 

Fresh points and setting the timing should show a big improvement in starting and running 



Is the 63 Cadillac a new car you acquired or do you have a history with the car ?


I know nothing of the true history. Guy I bought it from was unsure himself.


Can you install new points and do the timing for starters ?
Pls get yourself a 63 Service Manual for your year Cadillac as it will be the answer to correctly doing your  maintenance on your Cadillac as required by Cadillac 


Thank you! Printing one now. 

Some basics could be checked first:

- measure compression in each cylinder

- is there spark in each cylinder when it runs

- choke seems to be not working at all

- carb adjustment and ignition timing

It is not 63 engine but older.


Real good observation 

The location of the fuel pump on top of the engine is a sign that this  is an earlier engine than 1962 from what I think I know 
I had a 62 convert so know the 62 63 ( 390’s ) and 64 ( 429 ) engines have the fuel pump on the lower front drivers side of the engine 

So this engine is earlier than those 

Possibly a 58 to 61 engine ——but just my best guess 




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