Question about Cadillac DeVille

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I have a 1983 cadillac coupe deville with about 81,000 miles on the engine. car runs great but burns oil. any suggestions?

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The only options you really have are. Have the top end rebuilt for new valve stem seals. Or try the syrup in a bottle you by from a local store, which I don't suggest using. But a lot of people use this stuff and it's basically a thick weighted oil and over time isn't good for the engine. With it being an 83 Cadillac, I would have the original engine rebuilt because these original parts are hard to come buy. Good Luck

Posted on Sep 09, 2010

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Posted on Jan 02, 2017

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2000 Cadillac DeVille running rich city exhaust engine runs great uses boil it but doesn't burn have a blue oil leaves white smoke what could be the problem with it?


Running rich burns black smoke.

Burning oil, burns blue smoke.

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My 1997 cadillac deville, northstar w/85, regular oil changes, burns almost 2 quarts of oil every change. It is not leaking.


If your car is losing oil, and if there is no evidence of oil leaking, there is no question that it is either losing it through piston rings or through the head (head gasket or valve guides).
Best thing to do is use a HEAVIER WEIGHT oil than specified for the vehicle when new, regularly monitor your oil level and be sure it never falls below one quart low, and consider having the engine overhauled when you start noticing a performance deficit or hear mechanical noise (such as rod knock) from the engine.

Apr 18, 2014 | 2003 Cadillac Deville

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1985 cadillac coupe deville freeze plugs


Yes a freeze plug could be leaking, or it could be the head gasket higher up.
And the engine would run hot if the radiator is low on coolant.
You may have to use a lift to get under and see the source of the leak.

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2003 Cadillac Deville with 135,000 miles. Service engine light on p0741 code. any suggestions?


All you had to do was google PO741

Torque Converter Clutch Circuit Stuck Off

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Loses qt of oil per week. No leak shows underneath car and does not smoke


It can easily burn that much in a 100 miles without seeing any smoke.
If you check the spark plugs you may find evidence.
It can also leak while the engine is running and not when it is off. Most Northstar engines leak to some degree.

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I just got my 2003 Cadillac deville..any everything was great..about a week after I got the car I took it Thur the car wash and out the blue the service engine light came on...what can that possibly...


A service engine light means it's time for an oil change. That light needs reset after the oil is changed. The computer senses the miles drove automatically and says "change my oil, it's been 3,000 miles" A CHECK engine light means it has to get a scan done. Change the oil, it will be fine. It is suppose to do that. Let me know if this helps you.

Mar 07, 2011 | 2003 Cadillac Deville

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Runs hot


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Leaking coolant, oil, poorly running, won't shift into gears now


First determine where coolant loss comes from. I would not continue driving, till that step is isolated, or further damage will be done

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Oil disappearing with no visible leaks and engine not using oil.


Check out this thread and take your Caddy for a couple of Wide Open Throttle runs on the Interstate. Clears out the carbon buildup on the rings that is causing oil blowby.

http://townhall-talk.edmunds.com/direct/view/.f1078f6/0

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