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Losing fuel pressure to carb

Tiny
EMSGUY
  • MEMBER
  • 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 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 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
  • MECHANIC
  • 9,990 POSTS
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
  • 3 POSTS
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
  • MECHANIC
  • 9,990 POSTS
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
  • 3 POSTS
No, 2 barrel carb.
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Wednesday, December 28th, 2011 AT 1:42 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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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-1
Wednesday, December 28th, 2011 AT 2:18 PM

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