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P ONLY. I have a 2004 ML350 and the gas tank door says
This question is for Lou P ONLY. I have a 2004 ML350 and the gas tank door says premium fuel only. I would like to save money and put regular gas in it. What bad effects would that have on the vehicle… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
4,460 satisfied customers
Ive been having the problem that after I fill my gas tank my
Ive been having the problem that after I fill my gas tank my gl550 car won't start. I have to let it sit and pump the gas a couple times before it starts. It use to happen only once in a while now it'… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
Could you offer any advice on what to check with this
Could you offer any advice on what to check with this situation? Video is at the link provided. https://www.youtube.com/watch?v=DFYJscazmxg&feature=youtu.be… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
I have a 1998 slk 230 i bought used and when i got it i had
Hey i have a 1998 slk 230 i bought used and when i got it i had to get a k40 relay that fixed it 8 months ago. I have had to use cheap gas afew times and it dont like it its supposed used 90 octane or… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
Why does my car knock when I t the acceleration, and then
Why does my car knock when I hit the acceleration, and then stall, and the crank back up and resume driving! Is it the wrong octane gas for a high performance engine?… read more
Ryan-CTech
Ryan-CTech
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Marty, (Stuart 1976 Mercedes 450slc Valve and timing change
Hi Marty, (Stuart 1976 Mercedes 450slc Valve and timing change replacement continued). The car starts fine when cold, idles a little fast but revs down when warm. Restarts when warm but requires givin… read more
Marty
Marty
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Associate Degree
29,460 satisfied customers
E 430: If I believe I either have a vapor lock issue or a fuel
If I believe I either have a vapor lock issue or a fuel pump issue, what is the probable remedy for vapor lock? My fuel pressure, was very low on my first check and after starting it was 47lbs and hel… read more
Lou P. master tech
Lou P. master tech
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ml350: mercedes 2012 ML350..if my car sits for several days
mercedes 2012 ML350..if my car sits for several days the battery dies. the local mercedes dealer cannot find out what is draining the battery..any ideas.… read more
sprinkles08
sprinkles08
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High School or GED
18,149 satisfied customers
E420: mb..About the use of premium gasoline..lowest octane rating
My son just bought a fairly low milage 1997 MB E420. As he and his wife are just starting out, they were pleased to find such luxury for the price paid, $7000. About the use of "premium gasoline", wha… read more
Michael Warfield
Michael Warfield
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Vocational, Technical or Trade Scho
3,132 satisfied customers
1988 mercedes 300: se..cylinder..My fuel distributor..stalls
I have a 1988 mercedes 300 se 6 cylinder. My fuel distributor appears to be acting up. Will start and run for a while then stalls when hot with gas smell. Let it sit until cools down then it will star… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
560 sl gray marketwhat octane gas..it starts right up..starts hard
I have a 1986 500/560 sl gray market what octane gas is best for my car? When it is cold it starts right up. When it is cold it starts hard like it is out of gas, I am afraid to flood it. Any thoughts… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
1985 380sl: it starts fine..it dies, but it warms up it runs fine
i have a 1985 380sl. it starts fine,byt when you push gas pedel it dies, but it warms up it runs fine. if you run it for awhile and turn it off for20 min. it is hard to start like it floods out after … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
2003 ml350: engine runs rough..stalls..engine light comes..code reader
2003 ml350 after driving short time engine runs rough then stalls. engine light comes on? i had a code reader check it out and said several cyclinders missed fired. if i let it sit for a minute or two… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
2002 Mercedes c320: hesitate..stall..fueled..93 octane premium fuel
Hello - I just bought a 2002 Mercedes c320. We had it less then 3 days when it began to hesitate and almost stall when my girlfriend was driving it. We had just fueled it that morning with 93 octane p… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
2005 ML350: 55,000 miles..wrench light..light came..check engine light
I just got a 2005 ML350 with 55,000 miles and one little wrench light came on with the number 6 beside it yesterday. Now the check engine light just came on. How worried should I be?!… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
rev..hoses..stalls after warming upcold idles lousy to, at high speeds
lousy idle not moving, in park, rev, neu and drive. replaced idle control value, checked vaccume hoses, no misses, stalls after warming up cold idles lousy to, at high speeds no backfire or misses. Al… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
91 300e: hot weather..cold weather..when ambient temp reaches about 90
91 300e 3ltr does not want to start in hot weather. cold weather starts are fine. when ambient temp reaches about 90, it takes numerous attempts to start. when it does start it misses badly then clean… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
slk230 2000 sport, does unleaded regular gas damage the catalytic
slk230 2000 sport, does unleaded regular gas damage the catalytic converter? Doesn't the computer compensate for the difference in octane rating between reg. and prem.? What average miles/per gal. can… read more
Jerry
Jerry
Service consultant
Vocational, Technical or Trade Scho
13,107 satisfied customers
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Meet the Experts:

MB Paul

MB Paul

Mercedes Technician

3,567 satisfied customers

Qualified Mercedes Benz Diagnostic Technician - 20+ years experience - Workshop Foreman for Mercedes

Marty

Marty

Mercedes Technician

29,460 satisfied customers

Bosch Certified Master Tech. Over 35 years experience.

Lou P. master tech

Lou P. master tech

Mercedes Technician

4,460 satisfied customers

20 years Master Certified excellent fix rate and have access to factory wiring, and instructions.

Michael Warfield

Michael Warfield

Factory Mercedes-Benz Technician

3,132 satisfied customers

Mercedes-Benz Master Certified technician

Matt

Matt

Engineer

643 satisfied customers

Mechanical Engineer with 23 years experience in the auto industry, 8 yrs in formula 1 engine testing

promerc

promerc

mercedes diagnostic technician

553 satisfied customers

Qualified mercedes diagnostic technician & service team manager , ATA registered Master tech

Hipo64

Hipo64

Mercedes Technician

444 satisfied customers

Work and diagnose electronics on daily basis.

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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