Question about 2000 Cadillac DeVille DTS

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Gas Overflow I have a 2000 cadillac deville dts and when i go to fuel up the car will take maby 5 bucks of gas and then it will begin to overflow if i anymore gas is put???? this just started 2 days ago and the car is not full with gas it overflows and wont take gas. i have bought seafoam to try and clean out the fuel system maby if it is blocked??

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Sounds to me like a bend/kink in your filler neck, or someone stuffed a rag down there.

Remove the fuel filler cap and run a long, rigid wire down your filler neck - if you encounter significant resistance, remove the filler neck from the tank and investigate further.

Posted on Feb 10, 2014

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Posted on Jan 02, 2017

MrScary66613
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SOURCE: cadillac wont start

You have gotten Air into the Fuel line. You really need to let it run for a while and let it work the air out. When it Dies just keep trying to start and you will get the air out.

Posted on Jan 12, 2009

  • 1118 Answers

SOURCE: water coming from engine into overflow tank

Sounds like an overheating problem, best to get it checked, maybe thermostat stuck closed, pluged radiator, head gasget, cracked head.

Posted on Feb 08, 2009

Kravcar
  • 192 Answers

SOURCE: 97 cadillac eldorado overflowing through overflow pipe

The most common overheating problem with the Northstar engine is a blocked purge line. It's job is to purge air out of the cooling system.
There is a small diameter hose coming from near the top of the coolant tank(not the cap),this is the purge line.
With the engine idling,pull the purge line from the tank,if there is no coolant flow from this small hose,it is blocked and this will cause overheating.If the hose is clear, check for blockage at the nipple on the tank.Or trace the hose back until you find the blockage.The hose goes in to the engine to a crossover and comes out the other side to near the thermostat housing,the blockage may be there.

Posted on Apr 16, 2010

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Water coming from engine into overflow tank


Sounds like an overheating problem, best to get it checked, maybe thermostat stuck closed, pluged radiator, head gasget, cracked head.

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