Skip the auto shop - Our mechanics make house calls

Q: Vehicles Check Engine light blinks and then stays on, runs rough like on 6 cylinders/misfiring when wet.

asked by on

Vehicle Check Engine light blinks and then stays on in wet weather, runs rough like in 6 cylinders instead of 8. Used to straighten itself out after driving and drying out sitting after, pull -cable, light wet off, stayed off for months, passing inspections. NOT ANYMORE..been running this way for 10-15 miles and won't 'straighten' out.

My car has 88450 miles.
My car has an automatic transmission.

Hi there. Check the spark plugs and see if they are sparking. Get a code reader and check for any codes that could be stored in the computer as the check engine light is on. The code will give you a starting point for diagnostics. I recommend replacing the spark plugs and plug wires if they are more than 80,000 miles or 5 years old. If the spark plugs are working good, then check the fuel injectors and see if they are working by removing the harness to each injector one at a time. If the engine stumbles more than normal, then the injector is working. I recommend seeking out a professional, such as one from Your Mechanic, to help you diagnose a misfire if you need further assistance.

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
  • Home
  • Questions
  • Vehicles Check Engine light blinks and then stays on, runs rough like on 6 cylinders/misfiring when wet.

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: Idle air valve calibration/adjustment

Hi there. It is suggested to have a bidirectional scan tool but it is not required. Verify the idle speed is within 650-750 rpm. You want to be at 700 rpm ideally. Connect data link connector terminals TEN & GND...

Q: HELP! wont start all of the sudden

In order to find out the reason for the crank no start you should first look at theft light on dash and when turn the key to on but not crank and see if theft light comes on and then...

Q: Engine skip - 2008 Mazda Tribute

Hello there, I would need more details about the problem in order to help you with engine skipping on your 2008 Mazda Tribute. If the engine timing is off, it may skip and there is many possible causes for the...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.