LOSING FUEL PRESSURE TO CARB

  • Tiny
  • emsguy
  • 1990 Mazda b2200
  • 119,000 miles

Have to dump gas in the carb every now and then to get it to start. Cleaned the carb, new fuel pump, new gas tank, and new filters. Most of time will start and run, but 2-3 times a week, have to put gas into carb and then it will start and run

Tuesday, December 27th, 2011 AT 9:22 PM

6 Answers

  • Tiny
  • ASEMaster6371
  • Expert
  • 25,502 posts

Check and see if there is a leak between the pump and the tank. It may be drawing air instead of fuel.

Roy

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Tuesday, December 27th, 2011 AT 10:14 PM
  • Tiny
  • fixitmr
  • Member

Any specific conditions related with those few times a week?

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Tuesday, December 27th, 2011 AT 10:26 PM
  • Tiny
  • emsguy
  • Member

No specific conditions, and the pump is in the tank not inline
also parked the truck in the garage and had no leaks. Today, it shut off on my son, we put gas in carb and it started up, drove it to gas station and home. Went out later and it started right up and idled, then shut off and won't start again without gas in the carb

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Tuesday, December 27th, 2011 AT 11:34 PM
  • Tiny
  • fixitmr
  • Member

When you say carb do you mean throttle body with single injector?

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Wednesday, December 28th, 2011 AT 6:27 AM
  • Tiny
  • emsguy
  • Member

No, 2 barrel carb.

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Wednesday, December 28th, 2011 AT 1:42 PM
  • Tiny
  • rasmataz
  • Member

Feeding it with fuel-sounds like the accelerator pump is malfunctioning its job is to prime it and then the choke takes over from there-sounds like the carb needs overalling

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Wednesday, December 28th, 2011 AT 2:18 PM

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