Spark plugs after 10k miles
10-10-2011, 05:53 PM
#1
BAMFr
Thread Starter
Join Date: Jul 2011
Location: NC
Posts: 1,787
Spark plugs after 10k miles
so I pulled my spark plugs to do a compression test today, I got good numbers:
180-185 on all cylinder (cylinder 3 was 175-180, nothing serious). but my plugs look ok/odd at the same time. I am not sure if there is anything wrong, so if anyone here looks a these things frequently please tell me if I am wrong on my conclusion here:
The coloring implies I am running ok, but perhaps a little lean or too hot on cylinder two as the white is too far back on the ground strap. I also have that peeling on the porcelain on cylinder two. I had oil/fluid on cylinder 1,3,4 threads. Cylinder 1 I was expecting as I spilled some oil around it earlier in the weekend, and didn't take the plug out to clean it.
What the ---- is up with my cylinder 2 plug? I am baffled why that one would be overheating and not cylinder 4.
have a looksy guys:
Cylinder 1:
Cylinder 2:
Cylinder 3:
Cylinder 4:
Group pic.:
180-185 on all cylinder (cylinder 3 was 175-180, nothing serious). but my plugs look ok/odd at the same time. I am not sure if there is anything wrong, so if anyone here looks a these things frequently please tell me if I am wrong on my conclusion here:
The coloring implies I am running ok, but perhaps a little lean or too hot on cylinder two as the white is too far back on the ground strap. I also have that peeling on the porcelain on cylinder two. I had oil/fluid on cylinder 1,3,4 threads. Cylinder 1 I was expecting as I spilled some oil around it earlier in the weekend, and didn't take the plug out to clean it.
What the ---- is up with my cylinder 2 plug? I am baffled why that one would be overheating and not cylinder 4.
have a looksy guys:
Cylinder 1:
Cylinder 2:
Cylinder 3:
Cylinder 4:
Group pic.:
10-11-2011, 10:18 PM
#2
BAMFr
Thread Starter
Join Date: Jul 2011
Location: NC
Posts: 1,787
I will update this with more info which I can concluded from discussion on other forums. The white isn't actually so white, this plugs are probably not doing so bad. spark plugs #2 has deposits and not cracking or damage to the porcelain. So I am not detonating like I had initially thought, but just to be safe I will be running 92 for the next couple thousand miles.
I am going to post a few more images of #2 which helped me in coming to a conclusion...
I am going to post a few more images of #2 which helped me in coming to a conclusion...
Last edited by Track; 10-12-2011 at 10:59 AM.
10-11-2011, 10:27 PM
#3
BAMFr
Thread Starter
Join Date: Jul 2011
Location: NC
Posts: 1,787
its deposits from my disappearing oil!! so some progress has been made then. The car has been eating oil at a relatively quick pace. I have posted a ton of links around, but this one is particularly good:
http://www.spark-plugs.co.uk/pages/t.../diagnosis.htm
and this one too:
http://dodgeram.info/Engine-Gas/Spar...plghnbook.html
These two confirm my suspicion that my leak has been from my valve seals/seats because the deposit on #2 is only on one side rather than all around.
With this said, the combination of leakdown test, compression test, and the deposit I should be able to determie if its a valve seat or valve seal (if its a seal, it won't show up on the compression or leakdown test since they are not part of the cylinder).
http://www.spark-plugs.co.uk/pages/t.../diagnosis.htm
and this one too:
http://dodgeram.info/Engine-Gas/Spar...plghnbook.html
These two confirm my suspicion that my leak has been from my valve seals/seats because the deposit on #2 is only on one side rather than all around.
With this said, the combination of leakdown test, compression test, and the deposit I should be able to determie if its a valve seat or valve seal (if its a seal, it won't show up on the compression or leakdown test since they are not part of the cylinder).
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