DOES NOT START

  • Tiny
  • Kevin Godwin
  • 1998 Mazda b2500
  • 175,000 miles

Has fire has injector pulse has air has fuel has fuel pressure timing is on has compression does not start no codes no security fault

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have the same problem?
Yes
No
Friday, December 23rd, 2011 AT 3:02 AM

21 Replies

  • Tiny
  • Kevin Godwin
  • Member

Done all the above (basics) still nothing even tried a used computer like stated in post above has fire has injector pulse has fuel pressure and timing is dead on. No codes or security faults

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Friday, December 23rd, 2011 AT 3:21 AM
  • Tiny
  • rasmataz
  • Member

How did you check the timing that is dead on-also what is the fuel pressure?

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Friday, December 23rd, 2011 AT 3:24 AM
  • Tiny
  • Kevin Godwin
  • Member

Pulled the timing cover off and checked cam and crank marks
fuel pressure 35psi
injector pule and pulse width looks great as well

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Friday, December 23rd, 2011 AT 3:28 AM
  • Tiny
  • rasmataz
  • Member

Are you so sure its on the compression stroke instead of being in the exhaust stroke-180 deg off-

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Friday, December 23rd, 2011 AT 3:31 AM
  • Tiny
  • Kevin Godwin
  • Member

Yes and truck has cranked and ran perfect once since problem did not recrank rechecked everything though still found nothing wrong all numbers look good all sensors read good all waveforms are good

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Friday, December 23rd, 2011 AT 3:35 AM
  • Tiny
  • rasmataz
  • Member

You got compression, fuel and spark it should be able to combust I can't think of anyting else

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Friday, December 23rd, 2011 AT 3:55 AM
  • Tiny
  • Kevin Godwin
  • Member

Thats what I thought too but

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Friday, December 23rd, 2011 AT 4:00 AM
  • Tiny
  • rasmataz
  • Member

Something is still amiss between the 3 elements

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Friday, December 23rd, 2011 AT 4:04 AM
  • Tiny
  • Kevin Godwin
  • Member

I agree but I can hook a compression gauge and fuel pressure gauge a noid light and a spark tester all at the same time and everything is there even tried and egr valve thinking maybe its stuck open letting to much (used) air into combustion chamber to run.

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Friday, December 23rd, 2011 AT 4:09 AM
  • Tiny
  • rasmataz
  • Member

EGR valve could be wide open creating a massive vacuum leak

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Friday, December 23rd, 2011 AT 4:56 AM

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