Misfires when accelerating, code p0300

1998 BUICK PARK AVENUE
99,103 MILES • 3.8L • V6 • 2WD • AUTOMATIC
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DUSTY03
  • MEMBER
  • 6 POSTS
idles good . it misfires when you start to drive !!! gets better the faster you go!!! but engine light comes on and blinks . and the bell rings???
Aug 26, 2021 at 9:30 AM
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JACOBANDNICKOLAS
  • Experienced Mechanic
  • 110,240 POSTS
Hi,

It sounds like an ignition-related issue. Has a tune-up been done on the vehicle recently? Also, since it is a P0300, it is random. However, the flashing light usually indicates a specific cylinder or cylinders are misfiring. Is that the only code that was found?

You may want to remove a couple of spark plugs to inspect their conditions. Here is a link that explains how to replace spark plugs. Use this to remove them.

https://www.2carpros.com/articles/how-to-change-spark-plugs

Also, there are several other things that can cause it, but spark plugs (if old) are the most common.

I attached the diagnostics below for the code. Take a look through it and let me know if you are comfortable doing it. If you need help, let me know.

Take care,

Joe

See pics below.
Aug 26, 2021 at 3:03 PM
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