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1990 fuel pressure 4.3 chevy Pu throttle body 2whl dr 2 wheel dr Cheyenne 1500

I invented a Fuel-Expander i call the Grice Device spd ometternot work but aman with samePu as mine said he got 19 mpg hwy i installed a Grice Device my Pu got 24.1 mpg look scnow.comgricedevice when page come up read Grice Device can help streatch miles per gallon? I had a 81 Datson straight 6cyl FE it was 19 mpg hwy i put my Device on it got 29 MPG then i add regulator it was 19lbs preasure i cut it down to 4.5 and cut fuel-flow got 60 MPG

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6ya6ya
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Posted on Jan 02, 2017

  • 85 Answers

SOURCE: Gas Consumption

i have never seen this before but if it was not operating properly you would a check engine light on

Posted on Jul 02, 2008

  • 7 Answers

SOURCE: Accelerator flat spot between 2-3K rpm

The shop quote could be correct about insufficient fuel (lean) condition. If this exists it causes the driver to push harder on the accelerator (more fuel) to "make up" for the lean condition thereby causing your truck to use more fuel and lose gas mileage.
I recommend looking for a vacuum leak at the carb base, intake manifold, vacuum lines or the power brake booster. Try to use (borrow) an external vacuum gauge during testing. It should read between 17-20 inches of mercury during normal idle.
Has the Toy had the flat spot as long as you have owned\driven it? If so the carb might need to be re-jetted especially if it is being used at a different altitude then what it was set-up for.
Hope this helps.

Posted on Apr 26, 2009

rad64us
  • 45 Answers

SOURCE: Where is the Fuel Pressure Regulator on a 1996

on the fuel injector line

Posted on Jun 30, 2009

66 chrgr
  • 1011 Answers

SOURCE: My 2006 PT 2.4 Turbo PT Cruiser gets 15 mpg on the highway when it's supposed to get 22 to 24 mpg.

My pt gets only 16 to 18 miles per gallon.check your air filter.

Posted on Jul 31, 2009

  • 94 Answers

SOURCE: poor fuel milage on a 1993 chevy 1500 with a 4.3

check your timming, it sounds like its out of adj.

Posted on Jan 15, 2010

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