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Check for any disconnected hoses under hood and make sure fuel pressure is at proper spec.
Shoulder Lean was created on 2006-07-04.
The Hitchhiker's Guide to Lean was created in 2006.
Running Lean Limited is the business or management consultancy business based in BasingstokeIn automotive terms it means that the engine is not getting as much gas as it should.In running, it refers to body mass.
engine is possibly running on too lean a fuel-air mix, should be a little screw on carburettor to adjust fuel-air mix.
needs an O-2 sensor?
it is gay
running lean can cause your 400ex to backfire ..if it backfires on deceleration its lean ...if it pops on acceleration its running rich.====carb issues
P0171 System too Lean (Bank 1)
Bank 2 running too lean.
engine is running lean while eccelerating
Look for a vacuum leak.