Hard starting sometimes and Slight rough idle slow speeds

Tiny
JERRIBLANCHETTE
  • MEMBER
  • 1994 BUICK REGAL
  • 3.8L
  • V6
  • FWD
  • AUTOMATIC
  • 92,000 MILES
Most of the time starts fine. At times will crank, stop, crank, stop and then third time it will start. Replaced fuel pressure regulator. Not much different.
Thursday, September 22nd, 2016 AT 2:34 PM

1 Reply

Tiny
JIS001
  • MECHANIC
  • 3,408 POSTS
Install a fuel pressure gauge and measure the actual fuel pressure when it does not start. Key on engine off should measure between 40 - 47 psi. If pressure is good then verify you have spark coming out the wires. Also if you can, see if you can have the computer scanned for any pending or permanent fault codes.
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Thursday, September 22nd, 2016 AT 6:37 PM

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