Skip the auto shop - Our mechanics make house calls

Q: Truck missing badly

asked by on

My truck is beginning to miss badly. When I press down on the gas pedal, the truck moves slowly and is even beginning to miss and jerk.The gas mileage is also getting worse and it sounds like it is a problem with the fuel system.

Hello, as with all fuel injected vehicles, the first thing to check is to connect a scanner and check for codes and data. Diagnosing a miss is more that just the fuel system. If there are no codes, the cylinder that is missing needs to identified so it can be determined if its in the ignition system and fuel system. In the ignition system it could be a bad spark plug, wire or cap. The spark plug and wire could have carbon tracking causing a miss. The fuel system could have a bad fuel injector or low fuel pressure, the fuel pressure is checked with a fuel pressure gauge. Since the ignition system has high voltage and fuel is flammable, you are going to need the aid of a mechanic to check the ignition and fuel system in order to diagnose the engine misfire.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: My 1983 rabbit gti 1.8 liter changed alternator and valve cover gasket now when I drive the car it turns off when I come to a stop

Hi there. At first glance I would assume that the repairs you made are not related to the starting then stalling problem. Usually when you experience this type of problem it can be due to a vacuum line that has...

Q: Replaced chewed wires fixed the problem, but only for a little while.

Hello, having damaged wiring can cause all kinds of issues, the only proper way to repair wiring is to cut off the damaged portion, strip the wiring, then solder the wiring together and use wiring shrink tubing to cover up...

Q: BMW e90 320d jerking at pull away, and in 2nd gear, reduced power, turbo sound has changed.

Hi there. Since this occurred right after driving in some dusty conditions, I would check the air filter first. If the air filter is dirty then this will occur. If the air filter is fine, then I would also clean...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...