Question about 1992 Cadillac DeVille

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Vapor lock Help, My car cant make it up a hill, when its hot {summer} I Know this sounds funny but can a 92 Cadillac Deville get vapor lock ?

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Hi, replace gas cap.....

Posted on Aug 24, 2008

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Jul 21, 2012 | Cadillac Cars & Trucks

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My car is a 1977 cadillac deville/425. I changed carburetors, the old carb only had PCV and vapor canister connections the new carburetor has 3 vapor ports or vacum ports in the front. Would it effect...


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My 95 taurus will act like it is vapor locking on hot days. This only happens during the summer when I do more than just drive to work and back. I have had two certified mechanics look at it and change...


I would forget the vapor lock theory. It ran okey for years,so why not now
Vapor lock goes back 35 years to carburators and road race cars.
Do you ever get a Mil Light on dash or stored codes?
What tests were done to warrant O2 Sensors?
Did you have any overheating issues,or just thinking so?
Don't overlook an old and partially blocked converter. You haven't said what your drivability issues, really are!
Fuel systems aren't really to heat sensitive or know when summer is here.
You need to think simple, Ignition,fuel filter,pump could be partially plugged and working, but not much volume.
Tape a fuel pressure gauge to windshield and go for a drive.

Aug 09, 2010 | 1995 Ford Taurus

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"repost" 83 cad deville won't start after driving when hot


will it start after cooling off? if so , check for fuel lines near anything that can get hot..(vapor lock) insulate or move them..

Jun 02, 2009 | 1983 Cadillac DeVille

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Won't start after driving it


sounds like vapor lock, check for any gas lines near any thing that might get hot..motor..exhaust..ext..good luck

Jun 02, 2009 | 1993 Cadillac DeVille

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Car wont start sound like its out of gas but its not out of gas


its vapor locking,losen the fuel cap your your vapor return line has colapsed,just losen the cap and leave it lose or drill about a 1/16 hole it the cap while its off away from the car

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