1993 Mazda Miata Starts but stops very quickly

Tiny
DCUNDIFF
  • MEMBER
  • 1993 MAZDA MIATA
  • 4 CYL
  • 2WD
  • MANUAL
  • 225,000 MILES
After repalcing most every component in the spark train I now have solid spark and the engine fires up with the aid of starter fuild everytime but dies. Wher would you suggest I start my efforts and what items to check. It is not timed well since I replaced the cam position sensor during my quest for fire.
Monday, November 30th, 2009 AT 8:29 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
You got spark now check the fuel pressure with a fuel pressure gauge. See specs below

FUEL PUMP PRESSURE

Maximum 64 - 85 psi (441 - 589 kPa)

Hold over 50 psi (343 kPa) after 5 min.

FUEL SYSTEM PRESSURE (REGULATED)

With 18 - 21 inHg Vacuum To Regulator 31 - 38 psi (216 - 265 kPa)

With No Vacuum To Regulator 38 - 46 psi (265 - 314 kPa)

FUEL SYSTEM HOLD PRESSURE 21 psi (147 kPa) min.
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Monday, November 30th, 2009 AT 9:02 PM

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