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@moondogy...all the pics you showed matched up to the #7 pic of carbon fouled plugs..you keep saying they are tan yet everything you post is obviously black .. perhaps you need to have your eyes checked ?
You never posted up the better pic you said you were going to do....
FYI carbon fouled plugs are a result of far too rich mixtures...check for plugged air filter ( you did that ) , intake tract leaks, clogged fuel injectors, failing O2 sensors
at 130000 km are those the original O2 sensors? time to change them
All of which issues should trigger a check engine light . FYI....
Directly from NGK: they recommend checking gap but are cautious about gapping as thin wire plugs (iridium) are easly damaged during the gap process as another poster said above.....moving from .044 to .032 is a fairly large amount....I know I would not do it BUT those are Autolite plugs you installed and gapped down from .044 to .032 so.....YMMV
It could also be his old plugs were not the correct heat range , they were not Iridium, or the cheaper platinum, they were the cheap ones. I at first got the wrong plugs at Autozone, I got fed up and went to MB for a set.
Carboned up is, oil fowled, burning to cold, not enough air , retarded timing from using regular gas, and I’m sure more reasons .
2014 GLK350 base model (active) ; 2001 E320 base (retired); 2001 Wrangler soft-top
Originally Posted by Mmr1
It could also be his old plugs were not the correct heat range , they were not Iridium, or the cheaper platinum, they were the cheap ones. I at first got the wrong plugs at Autozone, I got fed up and went to MB for a set.
Carboned up is, oil fowled, burning to cold, not enough air , retarded timing from using regular gas, and I’m sure more reasons
Geeeeez. This reminds me of being in a motorcycle forum, viewing an "oil thread"
I looked back in this thread at the photos of the removed plugs, and searched for the Part # shown in one of the photos.
Here's the plug as a result of the search: https://www.boschsparkplugs.net/bosc...um-spark-plug/
While at that Bosch webpage, I inputted the OP's vehicle (BTW, you don't own a 2011 GLK305, it's a GLK350).
What did Bosch respond with? "This part is compatible with your vehicle"
That should end all the "is it the correct plug" responses
Out of curiosity, I then input our vehicle for compatibility (2014 GLK350 Base) ... "This part is not compatible with your vehicle"
Yea, so I'd never buy that plug for ours, but it works for the OP's GLK
.
.
(Sidenote ... yes, I DID IN FACT answer your question - your question can result in a "yes" or "no" response.
My response was "no" ) Plus, that plug IS ONLY A FIT for your year GLK, not GLK in general.
Originally Posted by m00nd0gy
Anyone try Autolite Iridium Ultra Laser spark plugs AI 5702 , is a fit for GLK350
Originally Posted by m00nd0gy
I guess you can't answer the question.
Last edited by calder-cay; 03-23-2024 at 11:38 AM.
From @calder-cay ”oil thread.”
There are plenty of those here if you want to entertain yourself.
I stand by my earlier reply that the OP is okay.
GLK350 came with 2 engines: M272 & M276. There were no similarities whatsoever beyond both having 6 cylinders. M272 was a fairly basic design for its time but it had some early growing pains. M276 came out of the box with almost no issues and was much more elegant, and more powerful.
All of us here want our vehicles to reflect our pride of ownership by attention to detail. But there comes a time when you just have to get the thing running well enough to perform its basic function and get us to work and back. The M272 just requires a spark at the right time to do that and the brand of spark plug doesn’t have a whole lot of impact. If it’s running well enough to meet our OP’s personal criteria, then I say “done.”
Here is a better pic of the plugs I removed. They still appear darker in the pic due to cell phone camera. They look like #1 and #2 pic from previous post. I am not adding lighting like there post.
Bottom-line my GLK350 runs great with new sparkplugs
Geeeeez. This reminds me of being in a motorcycle forum, viewing an "oil thread"
I looked back in this thread at the photos of the removed plugs, and searched for the Part # shown in one of the photos.
Here's the plug as a result of the search: https://www.boschsparkplugs.net/bosc...um-spark-plug/
While at that Bosch webpage, I inputted the OP's vehicle (BTW, you don't own a 2011 GLK305, it's a GLK350).
What did Bosch respond with? "This part is compatible with your vehicle" That should end all the "is it the correct plug" responses
Out of curiosity, I then input our vehicle for compatibility (2014 GLK350 Base) ... "This part is not compatible with your vehicle"
Yea, so I'd never buy that plug for ours, but it works for the OP's GLK
(Sidenote ... yes, I DID IN FACT answer your question - your question can result in a "yes" or "no" response.
My response was "no" ) Plus, that plug IS ONLY A FIT for your year GLK, not GLK in general.
I guess the typo confused you. I can see that, Sorry
Do a photo and adjust it it light it so it’s real like you see it . Why post anything else than actual color. I’d say you’re dark and not burning correctly .
Ok I checked Bosch also , it is a platinum, but it’s so worn the top tip is missing, so I thought it was a cheap plug.
it looks like it’s burning 20-50f to cold, rich, air starved or something. If others are the same check it in 500 miles .
2014 GLK350 base model (active) ; 2001 E320 base (retired); 2001 Wrangler soft-top
Originally Posted by Mmr1
Ok I checked Bosch also , it is a platinum,
but it’s so worn the top tip is missing
That statement is waaay more important than comments such as "it's too dark" (etc) ... seriously, I doubt I've ever seen a plug with the tip "worn" away (52+ years wrenching autos, motorcycles, riding mowers )
I'd say ANY new plug would result in a better running vehicle
Do a photo and adjust it it light it so it’s real like you see it . Why post anything else than actual color. I’d say you’re dark and not burning correctly .
You can down load the pic and adjust the lighting until you're satisfied. My GLK runs great, I'm satisfied with my results. That's all that counts.
That statement is waaay more important than comments such as "it's too dark" (etc) ... seriously, I doubt I've ever seen a plug with the tip "worn" away (52+ years wrenching autos, motorcycles, riding mowers )
I'd say ANY new plug would result in a better running vehicle
You can wrench your whole life and still have it wrong.
this is what my plugs looked like when changing them . This indicates the motor is running correctly. Anything else , and something is incorrect. Yea you can wrench your whole life and be wrong , and I could phony up your photo. But I do not care what you do, and do not smart off at people trying to help you .
03-22-2024, 07:14 AM
