1991 Jaguar XJ6 gets fire won't start

Tiny
HOWARD W. ARNOLD
  • MEMBER
  • 1991 JAGUAR XJ6
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 143,000 MILES
Car was running fine. After setting 2 hour, car started run about 10 sic. Quit. Getting fire to dist cap. Just spends over tried maybe once to start nothing since.
Monday, June 16th, 2008 AT 5:03 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Have the fuel pressure check to rule out the fuel pump
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Monday, June 16th, 2008 AT 5:21 PM
Tiny
JAMES W.
  • MECHANIC
  • 2,394 POSTS
Old mechanic's rule; If it's got spark and fuel it has to run, maybe not well, but it will run.
Do you have spark at the plugs? Assuming spark and valve timing are "OK", we'll go to fuel. Checking fuel pressure. Disconnect fuel line at the fuel rail and place into a coffee can or similar container. Have someone crank the motor and see if fuel sprays into container. Do this carefully, you don't want a fire. If you have fuel, check injector pulse with a tool called a "noid light" plugged into an injector harness lead. Any good parts store should be able to get you one. The noid light should should blink as the motor is cranked. If not I would replace the ECU. Other sensors on the engine influence the injector pulse, but the ECU controls the on/off. If any of these "other sensors" are malfunctioning, you should have a check engine light and stored trouble codes in the ECU. Good Luck.
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Sunday, September 28th, 2008 AT 9:37 PM

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