spark plugs problem - Toyota Yaris Forums - Ultimate Yaris Enthusiast Site

01-18-2012, 01:55 PM

Geoff Peace

Drives: Yaris 1.33 litre 2011

Join Date: Dec 2009

Location: Wigan

Posts: 124

Quote:

Originally Posted by momo-yx

what causes this problem ???
this brown color in all 4 plugs
Is it big problem or not ???

This is caused by minute oil particles suspended in the atmophere sticking to the plug because of high voltage. No gas is escaping and it is no detriment to the performance of the plug. If it is very bad (much worse than yours) the spark can track up the face of the insulator, known as corona discharge. Can best be seen as blue flashes in the dark.
Regards Geoff Peace.

« Previous Thread | Next Thread »

Posting Rules
You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is Off Forum Rules

Forum Jump

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Spark Plug Problem	TickleTimeTim	DIY / Maintenance / Service	15	09-07-2013 10:18 AM
Laser plugs? - Awesome	Altitude	Off-topic / Other Cars / Everything else Discussions	1	04-24-2011 09:02 PM
article on spark plugs and the fit	kngrsll	Performance Modifications	4	08-02-2009 12:50 AM
did autolite spark plugs screw up coil or coils ??	la_scanner	DIY / Maintenance / Service	20	04-09-2009 03:07 PM
Upgraded Spark Plugs For Boost	whooppee777	Forced Induction Forum	9	02-14-2009 02:53 PM

All times are GMT -4. The time now is 04:15 AM.