1996 Cadillac Deville ENGINE SPINS FAST BUT WON'T START

Tiny
LANN68
  • MEMBER
  • 1996 CADILLAC DEVILLE
Engine Mechanical problem
1996 Cadillac Deville V8 Front Wheel Drive Automatic

KEY WAS LEFT IN ON POSITION, BATTERY WENT DEAD AND TRIED TO JUMP START. ENGINE SPINS OVER VERY FREELY BUT WILL NOT TURN OVER. SOMETIMES BACKFIRE BUT DOES NOT RUN
Thursday, December 11th, 2008 AT 7:04 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Do below to determine if its a fuel or spark issue

Get a starting fluid or ether and spray into the carb or the throttle body on an EFI. Did it start and die? If not disconnect a sparkplug wire or 2 and ground it to the engine -have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, distributor pick-up coil, ignition control module, cam and crank sensors- Note: If it doesn't apply disregard it
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Thursday, December 11th, 2008 AT 7:30 PM

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