Spark Plug Condition
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2010 C63 P31 AMG
Spark Plug Condition
Did regular maintenance today and saw this on cylinder 1 plug. Rest look better with deposits but not as bad. It’s been about 30k miles I believe since last change thru a tech. Waiting to verify how long it’s been in the car. Thoughts on condition? Oil leak? Or just had them in way too long? Injectors were change about 5-8k miles ago.
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2010 C63 P31 AMG
Car noticeably smoother at idle and in cruising, a bit more pull top end. I wasn’t running through any issues or misfires just decided to change them. I should’ve changed them when I did injectors awhile back but never got down to it. Forgot when they were last changed which is a problem. Yes all parts ordered through FCP as well.
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2010 C63 P31 AMG
I’ve got 108k miles and thinking maybe leaky valve seals or plugs were just too worn down and caked with deposits. Tech says it’s deposits so possibly way past time to change them. Working on valve cover and spark plugs seals next week.
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I just did my plugs at 36k and they mostly looks like new, those look like they are burning a bit of oil, how many miles on the car? I would probably suspect the PCV especially if 70k+ miles is where the oil might be coming from, it is the weakest link mostly likely way oil gets into the combustion chamber, more so that valve seals or getting past the rings. You could do a leak down test which will give you an idea of the ring and valves ability to seal but would guess PCV is letting oil into the intake and your intake is probably holding a bit of oil also.
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2010 C63 P31 AMG
I just did my plugs at 36k and they mostly looks like new, those look like they are burning a bit of oil, how many miles on the car? I would probably suspect the PCV especially if 70k+ miles is where the oil might be coming from, it is the weakest link mostly likely way oil gets into the combustion chamber, more so that valve seals or getting past the rings. You could do a leak down test which will give you an idea of the ring and valves ability to seal but would guess PCV is letting oil into the intake and your intake is probably holding a bit of oil also.
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2010 C63 P31 AMG
Tasos, YouTube, responded To my phot and said to use better fuel, fuel cleaner, change oil every 5k miles maximum and don’t keep plugs for more than 30k miles. I guess I’ll do leak down test too just to be safe if there are other issues. He didn’t mention anything else. Just thought to share.
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Yup, that’s bad gas.
You can’t really “read” plugs unless you take them out immediately after doing a WOT pull.
But stuff like this or physical damage.... that white ashy deposit is a tell-tale sign of bad fuel or additive.
Throw in a can of BG44K or Techron every month or so.
You can’t really “read” plugs unless you take them out immediately after doing a WOT pull.
But stuff like this or physical damage.... that white ashy deposit is a tell-tale sign of bad fuel or additive.
Throw in a can of BG44K or Techron every month or so.
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2010 C63 P31 AMG
Yup, that’s bad gas.
You can’t really “read” plugs unless you take them out immediately after doing a WOT pull.
But stuff like this or physical damage.... that white ashy deposit is a tell-tale sign of bad fuel or additive.
Throw in a can of BG44K or Techron every month or so.
You can’t really “read” plugs unless you take them out immediately after doing a WOT pull.
But stuff like this or physical damage.... that white ashy deposit is a tell-tale sign of bad fuel or additive.
Throw in a can of BG44K or Techron every month or so.
#15
Your car isn’t running right. Some plugs look leaner and others richer. They all have deposits. How old are your o2’s and fuel injectors?
I would do a full service tune up on the car and have fuel adaptations reset.
check your intake manifold as well
for leaks. Best way is smoke test.
I would do a full service tune up on the car and have fuel adaptations reset.
check your intake manifold as well
for leaks. Best way is smoke test.
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2010 C63 P31 AMG
Your car isn’t running right. Some plugs look leaner and others richer. They all have deposits. How old are your o2’s and fuel injectors?
I would do a full service tune up on the car and have fuel adaptations reset.
check your intake manifold as well
for leaks. Best way is smoke test.
I would do a full service tune up on the car and have fuel adaptations reset.
check your intake manifold as well
for leaks. Best way is smoke test.
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besides the oil build up...the plugs look fine. also your air filters aren't doing much filtering hence why i run factory filters. don't want that garbage flowing through my engine.
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one thing i did want to mention...it seems your camera is color correcting to the wrong color...there is a possibility you are seeing detonation, but unable to tell based off the color correction of your photos.
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ah ok...if the color is correct then that is dirt being cooked onto your spark plugs as well as oil build up. does the weistec catch can have baffling built in? you are getting some oil in your chambers.
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2010 C63 P31 AMG
yes it does...i empty it out every 10k basically...normally 1/2 filled....I can’t wait to open the intake manifold....see everything myself...will be providing updates there for sure.
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MB1 0w 40, recently motul xmax 5w 40...I agree on the catch can...possibly my valve seals are leaking but unknown. I know these plugs have been for a while....about 1/2 it’s life, I had many idle issues, bogging cold starts issues etc....finally replaced PCV which resolved a ton of items...didn’t check plugs...let it run until now. Thinking I have closer to 40k miles on the plugs.