Guys, I am trying to find out the correct spark plug gap to use on my C250 W205. I can't find any specific info on this, can anyone help me please?
The reason I am planning to change my plugs is that recently the car developed a sudden jerk/pull when accelerating, it is only random at this stage but yesterday it did scare the crap out me because the car lost power and it went into limp mode. I always drive my car like an old lady, never pushed the car more than 4K RPMS, in other words, I don't like playing with it as some people tend to do. A few weeks ago I took the car to the dealer and they charge me an arm and a leg just to do a transmission service (AU$ 800 - US $600), they found no issues, no codes and they say everything was ok, but obviously, it is wasn't because the car continued jerking every now and then. The car has 80K (50 miles) and originally I thought the problem was the transmission speed sensors as lots of people have had them in the past (as seen on the internet) hence I had a transmission service done without any luck whatsoever; now I am thinking more like the spark plugs could be the issue here, hence my initial question.
Thanks guys for your help, hope I can get some good advice.
take care.
The reason I am planning to change my plugs is that recently the car developed a sudden jerk/pull when accelerating, it is only random at this stage but yesterday it did scare the crap out me because the car lost power and it went into limp mode. I always drive my car like an old lady, never pushed the car more than 4K RPMS, in other words, I don't like playing with it as some people tend to do. A few weeks ago I took the car to the dealer and they charge me an arm and a leg just to do a transmission service (AU$ 800 - US $600), they found no issues, no codes and they say everything was ok, but obviously, it is wasn't because the car continued jerking every now and then. The car has 80K (50 miles) and originally I thought the problem was the transmission speed sensors as lots of people have had them in the past (as seen on the internet) hence I had a transmission service done without any luck whatsoever; now I am thinking more like the spark plugs could be the issue here, hence my initial question.
Thanks guys for your help, hope I can get some good advice.
take care.
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The reason I am planning to change my plugs is that recently the car developed a sudden jerk/pull when accelerating, it is only random at this stage but yesterday it did scare the crap out me because the car lost power and it went into limp mode. I always drive my car like an old lady, never pushed the car more than 4K RPMS, in other words, I don't like playing with it as some people tend to do. A few weeks ago I took the car to the dealer and they charge me an arm and a leg just to do a transmission service (AU$ 800 - US $600), they found no issues, no codes and they say everything was ok, but obviously, it is wasn't because the car continued jerking every now and then. The car has 80K (50 miles) and originally I thought the problem was the transmission speed sensors as lots of people have had them in the past (as seen on the internet) hence I had a transmission service done without any luck whatsoever; now I am thinking more like the spark plugs could be the issue here, hence my initial question.
Thanks guys for your help, hope I can get some good advice.
take care.
https://mbworld.org/forums/c-class-w...e-failure.htmlOriginally Posted by megb
Guys, I am trying to find out the correct spark plug gap to use on my C250 W205. I can't find any specific info on this, can anyone help me please?The reason I am planning to change my plugs is that recently the car developed a sudden jerk/pull when accelerating, it is only random at this stage but yesterday it did scare the crap out me because the car lost power and it went into limp mode. I always drive my car like an old lady, never pushed the car more than 4K RPMS, in other words, I don't like playing with it as some people tend to do. A few weeks ago I took the car to the dealer and they charge me an arm and a leg just to do a transmission service (AU$ 800 - US $600), they found no issues, no codes and they say everything was ok, but obviously, it is wasn't because the car continued jerking every now and then. The car has 80K (50 miles) and originally I thought the problem was the transmission speed sensors as lots of people have had them in the past (as seen on the internet) hence I had a transmission service done without any luck whatsoever; now I am thinking more like the spark plugs could be the issue here, hence my initial question.
Thanks guys for your help, hope I can get some good advice.
take care.
well I did change the plugs myself and the car had a big improvement, no more sudden jerks when accelerating, only one on occasion; I was going down a hill and I almost missed the street I was meant to turn into; as I was doing around 80km/h I braked heavily and turned sharply into the street, I guess I went from D6 or D7 down to D2, as I accelerated I felt that bang/jerk/ or hesitance, and since then I haven't suffered any more issues. I would say that definitely the issue was electrical and not due to the transmission itself. I am suspecting a coil could be still playing up.
Well in the end it wasn't the plugs as I am still getting the sudden jerk under acceleration, not as often as before tough. I have read on the forums that it could be an issue with a crankshaft positioning sensor, also it could be my 7 year old OEM battery not providing enough voltage when accelerating.
Here is the main culprit on the much hated sudden jerk/pull when accelerating on my Mercedes C class 2015.
