Engine Timing

Tiny
4RUNNER135
  • MEMBER
  • 1994 TOYOTA 4RUNNER
  • 6 CYL
  • 4WD
  • MANUAL
  • 170,000 MILES
I cannot get the engine to fire. I have repaired the spark problem, and I have fuel going to the cylinders. The exhaust smells strongly of gas. It will start for a second if primed with starting fluid but nothing after that. Would the Fuel Pressure Regulator cause this or is this timing?
Wednesday, April 20th, 2011 AT 10:19 PM

6 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
If it starts for a second on starting fluid, that indicates a lack of fuel getting to the cylinders.

Test for injector pulse using a small bulb called a noid light. If none found, check for power supply at one side of the injector with the key on.

Use a fuel pressure gauge to test for correct fuel pressure, also noticing if the pressure holds when key is shut off.
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Wednesday, April 20th, 2011 AT 10:27 PM
Tiny
4RUNNER135
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  • 6 POSTS
I've checked the injectors with a noid light, they're all fine.
My question is could there be too much fuel if the pressure regulator is faulty?
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Wednesday, April 20th, 2011 AT 10:30 PM
Tiny
WRENCHTECH
  • MECHANIC
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Run the test I asked you to run.
Pull a couple plugs and see if they are getting fouled also.

The last thing you want to check is compression if fuel pressure and injector pulse are good. Don't guess. Use a pressure gauge.
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Wednesday, April 20th, 2011 AT 10:34 PM
Tiny
4RUNNER135
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I already ran the noid light test. The injectors seem to be working.
Fouled or fuel? I pulled a plug after cranking the engine, it was wet.
I left the plug out and had someone crank as I watched the cylinder and fuel sprayed out.
Compression test: 145 - 157 psi.
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Wednesday, April 20th, 2011 AT 11:05 PM
Tiny
WRENCHTECH
  • MECHANIC
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Your test results are not adding up. See how strong your spark is. If you have goo spark, it should be running with those test results.
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Wednesday, April 20th, 2011 AT 11:10 PM
Tiny
4RUNNER135
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  • 6 POSTS
You haven't answered any of my questions about the fuel pressure regulator or timing. I appreciate the help but you are wasting my time, I have tried all of the other tests you are talking about on advice from a qualified individual. I wanted to know quickly tonight if any of my ideas would be factors.
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Wednesday, April 20th, 2011 AT 11:44 PM

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