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1987 Chevy Blazer fuel injection does not prime when cold

Tiny
SCOT NELSON
  • MEMBER
  • 1987 CHEVROLET BLAZER
  • V8
  • 4WD
  • AUTOMATIC
  • 176,000 MILES
My truck wont prime it self when cold has no fuel have to crank it for long time befor it starts
Monday, October 25th, 2010 AT 11:05 AM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the fuel pressure if its within specs if okay -test the coolant temperature sensor, fuel pump relay and fuel pump and oil pressure sending unit-
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Monday, October 25th, 2010 AT 11:34 AM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Check the circuits at the fuel pump relay. Use a gage and check fuel pressure. If the pump only gets voltage through the o/p switch, it will be an extended crank. Any applicable mil codes?

Hi Raz, I didn't see you, have a good day.
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Monday, October 25th, 2010 AT 11:36 AM

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