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i would imagine the plugs are run time based. however for the purpose of vehicle value, completing the entire suggested 6yr service will make it easier to sell your car when the time comes. Picking and choosing won't give the next potential buyer and warm and fuzzy.
What can wear out on plug based on time?
Common idea behind time limit on plugs replacement is avoiding corrosion freeze, but modern MB have very little rust and even on 10 yo car most of the bolts can be unscrew by fingers.
350 engine has different schedule than 320, but I had funny experience with 320.
Bought the car with 146k miles and getting copy of MI I read the plugs were replaced at 108k.
Took me couple of years to re-read the parts number to find I was mistaken and those were different parts, not plugs.
So at 170+ kmiles, 13 years of age I replaced the plugs.
The old ones had the platinum wire much shorter than new plugs, but I am observing mpg at each fill up it did not change at all.
On old plugs the engine would occasionally jerk from the idle, when 4M amplified the issue, but I am not totally sure the new plugs cure it.
I sold the wagon short time after.
2010 e550 with no spark plug changed that i know of from 32k mls to 120k mls , but planning on doing it this spring sometime.
mileage hasnt changed from what i observed throughout the years.
How much was it at the dealer? They're pretty simple to change on the M 272 engine. There's probably videos on it on YouTube and it's mentioned in the old threads. I had an indy do mine before and it was under $100 including the plugs. I think it took less than half an hour as he was doing a bunch of other things at the time.
The Bosch plugs have been uneventful ☺ which means its running fine. I really just changed them at just under 60k miles to make use of a RA gift certificate. My opinion is that you wouldn't really notice any difference in the 2 brands in a stock engine application.
Unless there's a good reason such as tuned or modified engine I tend to stay with what the mfg originally installed.
how are those so far?? (Bosch is cheaper , by 2-3 bucks)
I have those in my W211. I got those as when I searched the old threads, those seem to be the recommended ones. But there doesn't seem to be any bad ones so NGK or Bosch should be fine.
The Bosch plugs have been uneventful ☺ which means its running fine. I really just changed them at just under 60k miles to make use of a RA gift certificate. My opinion is that you wouldn't really notice any difference in the 2 brands in a stock engine application.
Unless there's a good reason such as tuned or modified engine I tend to stay with what the mfg originally installed.
reading multiple sources , i have found that some had NGK also , and some bosch.
you might be right about noticing it tho , unless the engine is tuned or chipped maybe.
bosch come up 20 bucks cheaper.
What im thinking is that since ive never changed them in 120k miles , new bosch will perform much better anyway.
even tho i still get decent mileage. Sooo yea.. anyways.
will report back after i get my project done.
reading multiple sources , i have found that some had NGK also , and some bosch.
you might be right about noticing it tho , unless the engine is tuned or chipped maybe.
bosch come up 20 bucks cheaper.
What im thinking is that since ive never changed them in 120k miles , new bosch will perform much better anyway.
even tho i still get decent mileage. Sooo yea.. anyways.
will report back after i get my project done.
lol i should have checked like an hour before.
found a good deal on ebay at 54 bucks for all 8 so just went with that , had them for long , without issues , pretty reliable.
bosch YR7MPP33 it is.
You'll be fine.
I've read a lot of "these [mfg] plugs are great!" when it really seems the improvement is just from installing a new set of plugs, especially when over 100k miles.
NGK is oem on many vehicles and nothing against them, I use them. But in this case I don't find any issue with the Bosch beyond personal preference. That's ok too, you can use either.
You'll be fine.
I've read a lot of "these [mfg] plugs are great!" when it really seems the improvement is just from installing a new set of plugs, especially when over 100k miles.
NGK is oem on many vehicles and nothing against them, I use them. But in this case I don't find any issue with the Bosch beyond personal preference. That's ok too, you can use either.
I got the plugs today , so since i am so impatient i had to get it done right away.
whem i pulled the first one out , i found that original ones are NGK lol i was like no way , but yes... NGK R1 and replaced them with Bosch double platinum R6..
the job is straight forward.
it was time for them to be changed , glad i did , for 55 bucks. Thanks everyone for the input.
Good pictures. I put a scale on 2nd comparison and the gaps are the same.
So no wear out that you can see. Can you measure?
no , gaps in old ones seem larger , u can see on 1st and 2nd pics that new one has like a little thing at the end which old ones dont have due to normal wear... when i put those together visually atleast it seems like older ones got a bigger gap. I dont have a spark plug measuring tool anyways.
i did torque it to 20 inch pounds.. when suggested was 17 or so.
Looked like time for a change! Lots of deposits. Was surprising to see what the previous plugs were - are you the original owner or perhaps they were changed out at some time.
I'm currently rebuilding a 99 civic 1.6 vtec engine and installing the same as oem NGK plugs ☺
Looked like time for a change! Lots of deposits. Was surprising to see what the previous plugs were - are you the original owner or perhaps they were changed out at some time.
I'm currently rebuilding a 99 civic 1.6 vtec engine and installing the same as oem NGK plugs ☺
I got the car with 32k , if they were changed out before then maybe they not original from factkey , but from 32k to 120k they never got replaced so my guess is that these are original from 0 miles.
NGK is a Japanese brand as far as i know so should be perfect for a civic.
ill give bosch a try , its my first spark plug job.. next time if it ever gets to that point ill go with NGk.
Is there such a thing as a spark plug break in period??
just curious
The car starts and idles good with no issues , but from first observations looks like the mileage has gone down , i only drove like 20 miles ever since to observe more to make sure , but wanted to hear some opinions?
swapping NGK with Bosch or vise versa make any difference?
03-02-2018, 12:41 PM
