Having problems with your 1999 Cadillac DeVille ?

1999 cadillac starts but won't stay running just replaced headgasket and radiator and all was working. went to start it and it sounded like bad gas and now it turns over but won't run. the fuses look okay. now what

Posted / edited by AnonymousUser on : 18-11-2019

Answers :

Check the compression\015\012
\015\012and remove some spark plugs and then crank if water comes out then there's your problem. If water is present remove plugs and crank for 10 -15 second intervals with one minute breaks to remove water.\015\012
\015\012Did you resurface the cylinder heads? If not (brace your self) you should redo the job and have the heads resurfaced.\015\012
\015\012As an alternative you could try some Blue Devil block sealer but it's definitely not a permanent fix.\015\012
\015\012
\015\012If no water comes out and compression is good, check for spark and for fuel. You can check for spark by removing a plug wire, inserting a screwdriver (one with a thick rubber/plastic handle) and hold the metal part of the screwdriver about 1/2" away from some metal piece on the engine, when you crank the engine you should see a spark.\015\012
\015\012Check for fuel with a fuel pressure tester and put a test light on one of the injectors, it should blink momentarily.\015\012
\015\012By doing these things you will be directed to the next steps.\015\012
Repair Help & Product Troubleshooting for 1999 Cadillac DeVille

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