1990 Toyota Corolla First start of the day

1990 TOYOTA COROLLA
158,000 MILES • 4 CYL • 2WD • AUTOMATIC
Avatar
PYCOBRO
  • MEMBER
  • 4 POSTS
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 !
Oct 2, 2010 at 11:48 PM
Avatar
MMPRINCE4000
  • ✓Experienced Mechanic
  • 8,548 POSTS
Is this Fuel injection or Carb?
Oct 3, 2010 at 1:51 AM
Avatar
PYCOBRO
  • MEMBER
  • 4 POSTS
Fuel injection system.
Oct 3, 2010 at 10:49 PM
Avatar
MMPRINCE4000
  • ✓Experienced Mechanic
  • 8,548 POSTS
Check the fuel pressure regulator vacuum line for the presence of gasoline.
Oct 4, 2010 at 1:41 AM
Avatar
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.
Oct 5, 2010 at 12:51 PM
Avatar
MMPRINCE4000
  • ✓Experienced 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.
Oct 6, 2010 at 1:55 AM
Avatar
PYCOBRO
  • MEMBER
  • 4 POSTS
The pressure regulator is ok.
Oct 14, 2010 at 11:26 AM
Avatar
MMPRINCE4000
  • ✓Experienced 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.
Oct 14, 2010 at 11:55 PM
Avatar
PYCOBRO
  • MEMBER
  • 4 POSTS
I already got an apointment this thursday to measure the pressure.
Oct 15, 2010 at 12:54 PM
Avatar
MMPRINCE4000
  • ✓Experienced Mechanic
  • 8,548 POSTS
Keep us informed.
Oct 16, 2010 at 12:25 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle