Hard starting

1986 CADILLAC DEVILLE
90,000 MILES • V8 • 2WD • AUTOMATIC
Avatar
CRAIGJ1946
  • MEMBER
  • 1 POST
Occasionally to get her to run for a few seconds you must feather the gas pedal while cranking.. Repeating this operation 5-10 times and she will start and run but it takes about 20 seconds of running to settle down and idle smoothly. Seems like the accelerator jets are the only thing with gas to make it run just a little to prime the float chamber? 1996 side winder.
Feb 25, 2020 at 11:44 AM
Advertisement
Avatar
ASEMASTER6371
  • CERTIFIED EXPERT
  • 52,796 POSTS
Good afternoon,

I would start by checking the fuel pressure when it is cold. Low fuel pressure will cause this issue.

https://www.2carpros.com/articles/engine-cranks-excessively-before-starting

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Did you check for any codes on the dash display?

Roy
Feb 25, 2020 at 3:38 PM