help reading out spark plug condition

mcliong1

Known Member
Senior Member
Jun 30, 2010
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Kuala Lumpur
I want to borrow thread. If I drive my car hard like uphill Genting. After that I notice that my exhaust smell like burning smell. Any related to this?
 

61tom

Junior Member
Aug 17, 2012
5
1
503
miramar, florid
Too many variables to make a judgement on plug.
From the color it looks like you have a lean condition but if engine was at extreme load you should have heard some pinging.
Fuel additives nowdays will give a grayish color to the plugs also, should have same co;or at least three threads up, try to get a better angle on picture.
But if you have cracks on porcelain it is too lean.
 

vr2turbo

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May 11, 2010
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Petaling Jaya
I want to borrow thread. If I drive my car hard like uphill Genting. After that I notice that my exhaust smell like burning smell. Any related to this?
Could be your brakes, if manual maybe your clutch too....

---------- Post added at 03:01 PM ---------- 6 hour anti-bump limit - Previous post was at 03:00 PM ----------

hi,

i recently serviced my car and asked the mech to take out the spark plug to see the condition of it,

below is the pic:


it looks like its in healthy condition judging by the light gray deposit but the cracks look like i have been experiencing detonation

any help?
Looks like running lean. If overheat will turn yellow.....
 
Oct 8, 2012
4
0
501
USA, Chicago il
well for me it seems to be a little bit fine but if you are not feeling it right than you should probably change it what so ever i mean i would have been changed them if the plugs were lean i mean you could see exactly in the picture right and if there are cracks in the porcelain then why take risk simply just just them if you would like to........
 
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