Q: Q: Any ideas?

asked by on

High RPMS the battery drops, when gas it feels like it's flooding, just had oil changed and new spark plugs. It's shaky. Help?
My car has an automatic transmission.


The symptoms you are experiencing can be caused by many things. If the symptoms began after you changed the spark plugs then it may be possible that the issue is related to the plugs. If the incorrect spark plugs were used, or they were installed with the incorrect gap then they may not be providing the proper spark, and causing the issues. I would remove one of the spark plugs and examine the tip to see if it shows any signs of abnormal combustion, such as a fuel smell, or damage to the tip. If the plugs look okay, I would proceed to looking at the rest of the ignition system, as well as the fuel system. If it feels like the engine is flooding then it may be possible that one of the components has failed and is causing the performance issues. A few components to look at would be the ignition coil, module, cables, and the fuel pump and fuel pressure regulator. If the check engine light is on I would also recommend having the trouble codes pulled, as they will likely reveal some information on what the issue may be. I would start by looking at the spark plugs first, as they were recently changed, and then go from there.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. Q: Any ideas?

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: Short in Amps of mustang causes battery drain. With fuse removed mustang runs fine. Will replacing amps fix this?

If there is water leaking into the convertible top well and trunk area, this should be addressed first. Replacing electronic components while still having a water leak issue will only cause damage to the replacement components. If the leak has...

Q: Q: No start

Hi there. As you already know, repairing and replacing components without proper diagnoses can be expensive and time consuming without resolution. The engine turning over very fast, would lead me to performing a compression test. This will also give you...

Q: PO153 02 circut low response bank2 sensor 1 What does this mean?

Hi There. Thanks for contacting us tonight. The P0153 trouble code is an indication that the oxygen sensor is not properly regulating the fuel and oxygen levels. The oxygen sensor voltage switches between high voltage (fuel) and low voltage (air)...

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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.