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Loss of power when you first acelerate
Not sure what itnighters are, sorry.
You seem to be describing a flat spot - a hesitation during initial acceleration that is commonly caused by either insufficient spark power or the fuel system being slow to adjust to the new requirements.
A backfire is an explosion in the exhaust system and I wonder if you really meant a spit-back (through the intake), which is common with a fuelling caused flat spot?
Replacing the spark plugs is merely half the job and testing the spark power is the other half...
I suggest you check the fuel pressures and pressure regulator function and the injector spray patterns. Only if all tests good it could be worth testing the oxygen sensor...
on Oct 04, 2017
Truck will not start. Have power from battery. radio comes on. indicator panel lights up ok. NO crank when turning key
Have to make sure battery has a full charge and battery connections good. How long since a tune-up? Are there any applicable trouble codes?
If the starter motor won't crank, have to check starter wiring circuits. Usually two voltage circuits at the starter motor. One is battery voltage, hot all the time. The other circuit usually goes hot with the key in the crank position and may be wired through a relay and clutch or neutral switch, depending on the tranny. The ground for the starter motor is usually through the engine block. Any testing, make sure tranny is in park or neutral and functional parking brake is set. Safety is your responsibility when working on a vehicle.
on May 12, 2016
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