Misfire
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Joined: Jan 2010
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From: Canada
2011 E350 4Matic Estate in Mystic Red
Misfire
Not being very mechanically inclined I have a question: My car was parked in my garage for a week while I was away. When I started the engine, it misfired (car shaking, choking, and then check engine light on). I turned it off and restarted it again (fine). Should I have it looked at, or no big deal with misfiring (does this happen in any car)?
It is a 2011 E350, just had 1st servicing done (20,000km)
It is a 2011 E350, just had 1st servicing done (20,000km)
Senior Member
Joined: Jul 2010
Posts: 269
Likes: 3
2014 W212 E350 4M
Not being very mechanically inclined I have a question: My car was parked in my garage for a week while I was away. When I started the engine, it misfired (car shaking, choking, and then check engine light on). I turned it off and restarted it again (fine). Should I have it looked at, or no big deal with misfiring (does this happen in any car)?
It is a 2011 E350, just had 1st servicing done (20,000km)
It is a 2011 E350, just had 1st servicing done (20,000km)
My theory is as it sat for a few days, the fuel pressure dropped I turned the key before the fuel rails were fully pressurized. Fuel starvation of some sort.
It has not happened since.
Vehicle is a 2010 E350 4Matic.
Thread Starter
Member
Joined: Jan 2010
Posts: 181
Likes: 0
From: Canada
2011 E350 4Matic Estate in Mystic Red
I had a similar event last November. The vehicle sat for a few days, started it, misfire, ran very rough, check engine light on. I turned it off, restarted it and it ran fine. No code in the ECU found.
My theory is as it sat for a few days, the fuel pressure dropped I turned the key before the fuel rails were fully pressurized. Fuel starvation of some sort.
It has not happened since.
Vehicle is a 2010 E350 4Matic.
My theory is as it sat for a few days, the fuel pressure dropped I turned the key before the fuel rails were fully pressurized. Fuel starvation of some sort.
It has not happened since.
Vehicle is a 2010 E350 4Matic.
Senior Member
Joined: Jul 2010
Posts: 269
Likes: 3
2014 W212 E350 4M
If the car has not been used for a long time, turn the key, pause a second or two and then start it. This was true many years ago when fuel injection was a new technology
That is if my theory is correct about the lack of fuel pressure from not being used for several days.
I would like to have a technician weigh in on this.
That is if my theory is correct about the lack of fuel pressure from not being used for several days.
I would like to have a technician weigh in on this.
