cleaning spark plugs procedure

[renaultsport83]

can someone help me please. my car is mis-firing so im gonna give the plugs a clean.

 

[edde]

Take them out brush them with a hard wire brush recheck/ adjust there size and stick them back

Its under 3 yrs old Id take it back for them to fix it though

 

[JAY172]

what engine is it and how old. plug failures are rare on modern renaults.

 

[Mark]

ha ha only real way to clean them is sandblasting

 

[JAY172]

cheap enough though you might as well just fit new ones.

 

[Lunner]

...or just put new ones it...may be performnace spark pl;ugs, maight asdd an erxtra few bhp