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Car is hesitating and bucking Inspection Service

When you press the gas pedal, you expect the engine to rev and the car to accelerate. If your fuel delivery system, ignition components and exhaust system are all working properly, that’s what happens. However, even just one problem in any of the systems mentioned could lead to your car hesitating and bucking under acceleration, during deceleration, or at idle.

How this system works:

When you press the gas pedal, the fuel pump sends gasoline through the fuel filter, up the fuel line, and to the injectors. The injectors “atomize” the gas, and spray it into the injectors (atomization just means it turns it into a very fine mist). There, the spark plugs ignite the gasoline, which combusts, moving the pistons and turning the engine.

Gasoline combustion creates fumes (exhaust), which must be vented. This is done through a relatively complex network of components. Most of the exhaust is sent through the exhaust manifold, the catalytic converter, and then out the exhaust pipe. Along the way, some of it is recirculated and burned again (using the EGR valve), and oxygen sensors monitor the exhaust process for the right levels of contaminants.

Common reasons for this to happen:

  • Clogged Fuel Filter: Over time and through normal use, your fuel filter will become dirty and clogged. When this happens, the flow of gasoline to your engine diminishes, which can cause hesitation and bucking.

  • Failing Fuel Pump: If your fuel pump begins to fail, it will not send the right amount of gasoline to the engine. Note that pumps can exhibit intermittent problems for a long time before they fail completely.

  • Failed Oxygen Sensor: If one of the oxygen sensors in your exhaust system has failed, the computer cannot monitor the emissions, and pressure may drop, creating hesitation and bucking.

  • Clogged EGR Valve: The EGR valve is a crucial component in the exhaust system. If it becomes clogged with carbon, it won’t operate correctly, and your engine may spit, sputter or hesitate.

  • Worn Out Spark Plugs and Wires: In order to combust gasoline correctly, your engine needs a steady spark and stream of electricity. This is provided by the spark plugs and wires. If they’re worn out, your engine may spit and sputter.

What to expect:

A top-rated mobile mechanic will come to your home or office to inspect the engine and verify the hesitation and bucking, as well as when the condition occurs. The mechanic will then provide a detailed inspection report that includes the scope and cost of the necessary repairs.

How it's done:

The mechanic will connect a diagnostic computer to your car’s OBDII connection and read any trouble codes in the computer (even if the Check Engine light is not on, trouble codes may be stored). The mechanic may need to test drive the vehicle as well to verify the symptoms.

How important is this service?

You need reliable performance from your engine. Even if the hesitation and bucking doesn’t cause internal damage, it can be extremely disconcerting to drive while these symptoms are present. It can also compromise your safety on the road. Regular maintenance is the best way to protect against hesitation and bucking. Make sure you’re having the spark plugs, wires and fuel filter replaced regularly. You should also have any Check Engine light diagnosed immediately. One of our professional mechanics can troubleshoot, diagnose and repair your car, eliminating the hesitation and bucking during operation.

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Recent Car is hesitating and bucking Inspection reviews

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YourMechanic Car is hesitating and bucking Inspection Service

Average Rating

4.6/5

Number of Reviews

50

Rating Summary
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Honorio

16 years of experience
658 reviews
Honorio
16 years of experience
Honorio came 15 minutes early, and identified the two problems with my car well within the estimated time. He showed me and recommended the follow up and the specific parts to be replaced (a PCV valve and airco fan relay). He even manually (and temporarily) adjusted the PCV valve somehow so my engine would not lurch and die at stop signs. So far, all four of the mechanics who have come out from MyMechanics.com have been a great help, Honorio being no exception to my good luck so far. I actually have a great mechanic but his answering machine keeps answering: "Sorry for the inconvenience, but the shop is closed for several months"! Honorio and crew bring the shop right to my parking lot. Good deal. Sincerely, oldcodger1943.
1997 FORD TAURUS - CAR IS HESITATING AND BUCKING - CAMPBELL, CALIFORNIA

Glenn

40 years of experience
32 reviews
Glenn
40 years of experience
He arrived on time and was very knowledgeable, he gave a dionastic on my camaro and I need to get a couple of things for the car and will get in touch with your guys again, I’m also going to need brakes at a later date .
1995 CHEVROLET CAMARO - CAR IS HESITATING AND BUCKING - METAIRIE, LOUISIANA

Brian

20 years of experience
49 reviews
Brian
20 years of experience
He really took the time to listen to my concerns with my car and was dedicated to replicating the problem so he could figure out what it was. He also reassured me when I expressed nervousness in driving my car because of the mysterious issue. I can’t even begin to express how much that meant to me.
2013 DODGE DART - CAR IS HESITATING AND BUCKING - JACKSONVILLE, FLORIDA

Paul

30 years of experience
57 reviews
Paul
30 years of experience
Paul was great as far as being personable and friendly. He said my car had a blown head gasket. #Devistating. I had mobile shop to come out to pick it up and paid for another evaul fee. Turns out that it just needed a tune up with new spark plugs. There was no white smoke from tailpipe, water in oil or other indicators that Headgasket was blown. They fixed the issue and my car has been working fine ever since. I think that my fee paid to YourMechanic should be returned for the misdiagnosis. Thanks
2005 BUICK RENDEZVOUS - CAR IS HESITATING AND BUCKING INSPECTION - RALEIGH, NORTH CAROLINA

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