Skip the auto shop - Our mechanics make house calls

Q: Backfiring during acceleration, low idling

asked by on

I have a few issues with my car. One of the major issues is that the car has occasional backfiring while I accelerate. Also, it has pretty low idling. I tried to solve these issues by replacing the EGR valve, changing the oil and spark plugs but it didn't halp. I also put the cleaner in the gas tank but to no avail. Do you have any suggestions how I might solve the problem?

A: Hello. This can be caused by a number of th...

Hello. This can be caused by a number of things. I usually start by scanning the computer for codes to see if the computer is seeing any faults. If there are no faults, in the computer then I would check the compression. It sounds like the timing belt may be worn out and failing causing the valve timing to be off occasionally. This is common as it gets older. It can also be the crank position sensor, or worse case, you may have a failing seat valve in the engine. A compression test and cylinder leak down test would verify this. If you need to have this tested, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose your acceleration problem and let you know what needs to be repaired.

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・Save up to 30%

Get a quote

What others are asking

Q: Code p0010 camshaft actuator comes up, and mis fires. Just replaced intake manifold and these weren't issues before that.

Hi there. There are a few possibilities here. It is possible that you had a valve timing issue prior to working on the manifold. These engines have a ton of issues with the balance shaft and the valve timing as...

Q: Transmission issue

Hello and thank you for contacting YourMechanic. With the engine only revving up and the transmission is not moving in any direction forward or reverse, then there is a problem with the pump in the transmission. The transmission oil pump...

Q: My car shakes while it idles but says there is an evap system leak?

An evap leak is the same thing as a vacuum leak. A vacuum leak will certainly cause the engine to run roughly. I would recommend having your vacuum levels checked with a vacuum gauge by a qualified professional to determine...

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...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...