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|I have a 1990 Ward 54 passenger school bus with a 366 Chevy engine. It is equipped with a throttle body carburetor. My question - what is the fuel pressure going to the carburetor suppose to be?|
|Re: 366 Chevy||Phil Feinstein||3-8-05|
|Fuel pressure should be low for a carb; Something around 4 to 6 psi. Too much pressure and you'll push the needle off the seat and cause the carb to flood.|
TBI or Throttle body Injection is fuel injection and fuel pressure runs anywhere from 35 to 45 psi.
With a 1990 model, I think you have either TBI or a feedback (electronic) carburator. If you don't see 2 fuel injectors on the top of it, it's a feedback carb and needs low pressure.
Hope that helps!
|Re: 366 Chevy||Tom Dangelo||3-20-05|
|GM TBI preasure is 17 lbs. I have several of these systems set up on different vehicles. One is on an International 392 in my School BUs. I adapted everything from a 1989 Chevy 350 P/U with a TBI. You can get all of the iformation that you need for your system from affordablefuelinjection.com|
HTH. Yepabus sends