Jump to content
Vwmk3vr6

Spark plugs what's wrong or right?

Recommended Posts

According to Haynes:

 

If they are clean and white, with no deposits, this is indicative of a weak mixture or too hot a plug (a hot plug transfers heat away from the electrode slowly, a cold plug transfers heat away quickly). 

If the tip and insulator are covered with hard black deposits, then this is indicative that the mixture is too rich. If the plug is black and oily, then it is likely that the engine is fairly worn, as well as the mixture being too rich. 

But if the insulator nose is covered with light tan to greyish brown deposits, then the mixture is correct and it is likely that the engine is in good condition.

 

Ref: https://haynes.com/en-gb/tips-tutorials/how-check-and-change-your-car-s-spark-plugs

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


×