yellow engine light with p0300,p0302,p0304 codes. mini co...

Q: yellow engine light with p0300,p0302,p0304 codes.

asked by on March 14, 2017

yellow engine light with p0300,p0302,p0304 codes. changed plugs ,which looked good. swapped coils, 1 to 3 and 2 to 4. got the same codes for 2 and 4 cylinders,after clearing the codes There are a number of things that I could start changing from what I have read but would rather get some sound advice. Thanks

My car has 74490 miles.
My car has a manual transmission.

The first thing these codes show is cylinders 2 and 4 are misfiring. You swapped coils around but notice you moved coils 2 and 4 with each other. If these were misfiring then swapping these coils will not move the codes. You need to replace these two coils with cylinders 1 and 3 to see if misfire moves. If it does then replace coils. If it does not then do a compression and vacuum check on these two cylinders.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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

Car in park. Rev the engine. Grinding noise with smoke and burnt smell

What you are describing sounds like a faulty starter solenoid. A faulty starter solenoid will generally produce a clicking sound when turning the key. The starter solenoid is located on the starter and has internal electrical contacts that transmit electricity...

Camshaft vs timing chain failure symptoms 2009 Acura TSX

Hi there - wear or damage from timing chain components can be indicated by irregular metallic noises - rattling or tapping from the front of the engine. Worn timing chain guides, a weak chain tensioner, stretched chain - these all...

The AC on my 2009 Altima is not working. The clutch does not engage and there is no power at the harness on the compressor.

Hi there. I would highly recommend having one of our professional mobile mechanics come to your location and complete an AC is not working inspection, before attempting further diagnosis. There are several possible reasons why you might be having these...

Related articles

A Buyer’s Guide to the 2012 Mini Cooper Roadster
The The Mini Cooper Roadster was made in conjunction with the Mini Coupe, but went on sale four months prior to the Coupe. It is the sixth Mini version since 2001 when BMW revived the brand. The Roadster is a...
A Buyer’s Guide to the 2012 Mini Cooper Coupe
The The 2012 Mini Cooper Coupe has a distinctive style that offers an agile and fast ride to its passengers. The goal with the Coupe is to provide buyers with an alternative to the Porsche Cayman, Audi TT Coupe, and...
A Buyer’s Guide to the 2012 Mini Cooper Convertible
The The 2012 Mini Cooper Convertible offers lots of head room while providing both a fun riding and driving experience. There are many personalization options, so you can make the convertible your own unique vehicle. For example, contrasting piping and...