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1990 Toyota Corolla First start of the day

Tiny
PYCOBRO
  • MEMBER
  • 1990 TOYOTA COROLLA
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 158,000 MILES
I have a problem starting the engine first time of the day. It takes 3 or 4 times to start, it seems like gas not coming thrue. I change gas filter, gas pump, ignition cable, rotor. Gas line have been change 4 years ago. Starting is ok for the rest of the day, it seems like the gas pump discharged after 5 or 6 hours. Excuse my english but I am frenchman from Quebec Canada. Hope you got a hint for me ! Thanks !
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Sunday, October 3rd, 2010 AT 6:48 AM

9 Replies

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Is this Fuel injection or Carb?
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Sunday, October 3rd, 2010 AT 8:51 AM
Tiny
PYCOBRO
  • MEMBER
  • 4 POSTS
Fuel injection system.
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Monday, October 4th, 2010 AT 5:49 AM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Check the fuel pressure regulator vacuum line for the presence of gasoline.
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Monday, October 4th, 2010 AT 8:41 AM
Tiny
PYCOBRO
  • MEMBER
  • 4 POSTS
My mecanic told me that their is not supposed to have gasoline in the pressure regulator. Is that right or can you give me more details about that pressure regulator.
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Tuesday, October 5th, 2010 AT 7:51 PM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
The pressure regulator (FPR) uses vacuum to increase fuel pressure as engine speed increases.

If ther is gasoline in the FPR vacuum line then the FPR diaphram is ruptured and would need to be replaced.
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Wednesday, October 6th, 2010 AT 8:55 AM
Tiny
PYCOBRO
  • MEMBER
  • 4 POSTS
The pressure regulator is ok.
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Thursday, October 14th, 2010 AT 6:26 PM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Next step would be to measure fuel pressure with mechanical gauge.

On this Toyota it requires a special tool set since there is not an inspection port built into fuel rail.
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Friday, October 15th, 2010 AT 6:55 AM
Tiny
PYCOBRO
  • MEMBER
  • 4 POSTS
I already got an apointment this thursday to measure the pressure.
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Friday, October 15th, 2010 AT 7:54 PM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Keep us informed.
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Saturday, October 16th, 2010 AT 7:25 AM

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