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Wil not crank

Tiny
DILL-11
  • MEMBER
  • 1992 MAZDA MIATA
  • 1.6L
  • 4 CYL
  • 2WD
  • MANUAL
  • 140,000 MILES
Engine turns over almost cranks but will not. Have fire at the plugs and coils. Jumper wired the fuel. Runs about five seconds then cuts off. New fuel pump, change air flow meter. What do you think about crank and cam and sensors? Please help
Wednesday, May 10th, 2017 AT 1:24 PM

7 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
I am assuming battery has been checked and load tested. If not do so. If you hear a loud click have an assistant smack starter with a hammer if it starts starter Is bad. If not see if power goes through clutch switch. Also check main fuse under h ood it can be blown use a volt meter or test light for that.
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Wednesday, May 10th, 2017 AT 3:46 PM
Tiny
DILL-11
  • MEMBER
  • 126 POSTS
No the starter is turning the engine over just hit and run a few second and cut off. It act like it fires and stop some how.
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Wednesday, May 10th, 2017 AT 6:36 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check main relay and fuel pressure check inertia switch under front floor mat pass side. Then scan for codes. See pictures.
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Thursday, May 11th, 2017 AT 5:34 AM
Tiny
DILL-11
  • MEMBER
  • 126 POSTS
Also have change ECM. How do I check fuel pressure?
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Thursday, May 11th, 2017 AT 7:45 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Thought I sent the link sorry auto parts rent the gauge.
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
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Friday, May 12th, 2017 AT 6:02 AM
Tiny
DILL-11
  • MEMBER
  • 126 POSTS
Sorry Mazda Miata don't have that valve to screw on the fuel rail. So how would I check the fuel pressure?
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Friday, May 12th, 2017 AT 3:12 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
You will either need to buy an adapter to go inline or make one up that will be the only way to do it.
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Friday, May 12th, 2017 AT 3:19 PM

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