Mazda Rotary Club

General => General Technical => Anything Engine/Performance/Tuning related => Topic started by: MikeLMR on April 06, 2004, 09:54:37 PM

Title: Odd plugs ?
Post by: MikeLMR on April 06, 2004, 09:54:37 PM
Just finished putting my car together after a winter rebuild of the front suspension (new uprated ARB and adjustable shocks) and when the car was back down on the ground I took the opportunity to whip the plugs out and take a look (not been out in 3000 miles) ... I know the car has been sat for 6 months or more and it failed to start due to a flat battery about 2 months ago (possibly sllightly wetted the plugs) but is this normal ?

Rotor 1
Leading - Dark brown - with brick red electrode
Trailing - Dark brown - with brick red electrode

Rotor 2
Leading - Dark brown - with brick red electrode
Trailing  - very light brown - with darker electrode :confused:

if this were a boinger i\'d be thinking it was running lean on one cylinder ... but how can that be when its on the same rotor as a "normal" plug ? All the plugs are identical and are the standard ones as far as heat rating is concerned.

I will check these again after a long hard drive and see if it varies ?

Mike