Don't just throw parts at a problem. In order to truly diagnose the problem with your fuel system you need to understand how it works. If your car has a slow.
FAST is the leading developer of electronic fuel injection systems, EFI components, intake manifolds, tuning tools for high performance and street applications Intake Manifolds JavaScript seems to be disabled in your browser.
F-54 is a military fuel used in compression ignition engines in NATO Europe areas outside Denmark, Greece, Italy, Portugal, Spain and the United Kingdom. Also known as Diesel Fuel: MILITARY or DF-2. It has a Pour Point specification of 18 o C maximum. F-65 low temperature diesel/kerosene fuel blend. EZ-EFI 2.0 Self Tuning Fuel Injection. Carb-replacement system supports stock-to-1200 HP engines; Advanced color touchscreen hand-held doubles as sensor dash. Best parametric design software. You work hard to create the most value at the lowest cost and to stay flexible enough to adapt to changing markets. Our biofuel and biogas solutions are designed to help you reach your plant’s peak performance.
Combustion engines run most efficiently when they maintain an air-fuel mixture ratio of 14.7 parts air to 1 part fuel. When there are more than 14.7 parts air to 1 part fuel in the air-fuel mixture, a lean condition exists and code P0171 is triggered. The lean condition can be caused by a vacuum leak, which introduces more air into the air-fuel mixture, or by a weak fuel system, which does not input enough fuel into the air-fuel mixture. To keep your Ford engine running properly, the powertrain control module (PCM) tries to compensate for the lean condition by injecting more fuel to the mixture in an effort to maintain the proper 14.7:1 ratio. When these adjustments become too large, code P0171 is triggered.
Check Engine Light is onLack of power from the engineRough idleEngine coughingEngine misfiring
Ford P0171 Causes
Dirty or faulty mass air flow sensorVacuum leaks – PCV hose, vacuum hoses, intake manifold gasket.Weak fuel pump Clogged or dirty fuel injectorsExhaust leak
Faulty oxygen sensor
Ford Code P0171 Severity – Moderate
It is okay to drive your Fordwith P0171 for a short period of time, but driving with this code for an extended period of time can overheat the engine and cause internal engine damage.
It is important to complete the entire diagnostic process when diagnosing P0171. Many people will replace the air fuel sensor or O2 sensor as soon as they get a bad reading, but the root cause is often a dirty or faulty mass air flow sensor or vacuum leak, thus causing the O2 or A/F sensor to read differently to compensate. Reading and analyzing fuel trims and the freeze frame data is the key to properly diagnosing P0171.
Ford P0171 Diagnosis
Tools Needed to Diagnose:
Vehicle repair manualSoapy waterFIXDScrewdriverPliersFuel pressure gaugeMass air flow sensor cleaner
Fuel For Pages 2 0 Full Movie
Use FIXD to scan your Ford to verify P0171 is the only code present. If other codes are present, they must be addressed first.Inspect all vacuum lines and hoses for leaks, and make sure they are properly connected. If a leak is present, you will hear a hissing sound, though it may be difficult to hear with the engine running. If you suspect a vacuum leak but are having trouble finding it, check out this detailed guide to finding vacuum leaks.
Reconnect any disconnected vacuum lines and replace any damaged vacuum lines that are leaking, then use FIXD to clear check engine light code P0171. If check engine light code P0171 is triggered again, check the rest of the vacuum lines for leaks and continue to the rest of the diagnostic process.Remove the mass air flow sensor and clean the sensor using mass air flow cleaner or contact cleaner.
Reinstall the mass air flow sensor and clear the check engine light using FIXD. If the check engine light comes back on with code P0171 continue the diagnostic process.If check engine light code P0171 persists after you have reconnected and replaced all damaged vacuum lines and cleaned the mass air flow sensor, perform a fuel pressure test. If any components in the fuel system are failing, replace them as necessary.If you confirm there are no vacuum leaks, have a clean mass air flow sensor, and your fuel system is functioning properly, it is time to replace the oxygen sensors.
Fuel For Pages 2 0 Fraction
Fuel For Pages 2 0 F C
Was this post helpful?
Let us know if you liked the post. That’s the only way we can improve.