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1988 Oldsmobile Ciera engine not starting

Tiny
IMADKNIO
  • MEMBER
  • 1988 OLDSMOBILE CIERA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 71,000 MILES
The engine is turning but not starting:
repalced spark plugs
tested the following:

1- electrical spark: OK
2- Pressure on fuel line (seems OK), a small valve on the fuel line despenses gas when pushed. Pressue gets built up again, after attempting to crank

How can I test for crank shaft sensor, or what to do next?
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Sunday, February 15th, 2009 AT 3:13 PM

1 Reply

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Hello, I'm not sure of the litre size of the engine? With the engine cranking, is there an injector pulse? You really need a fuel pressure gage to check fuel pressure. Right now, I think the crank sensor is ok. It is possible for the ignition module to see the pick-up signal, but, maybe the computer doesn't see it, for some reason. You need to know if the computer sees an rpm signal. Without a scanner, look for injector pulse.

Can you check for codes?
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Sunday, February 15th, 2009 AT 3:32 PM

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