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Under full acceleration the car will not rev past 4k rpm
Under full acceleration the car will not rev past 4k rpm without massive hesitation … read more
Matt
Matt
Engineer
Bachelor's Degree
643 satisfied customers
1983 Mercedes 380SL. I replaced the following items: Fuel
1983 Mercedes 380SL. I replaced the following items: Fuel distributor, fuel pump, fuel filter, spark plugs & wires, warm up regulator, injectors. Car runs great, fuel pressure is between 40 & 50, but … read more
Marty
Marty
Mercedes Technician
55,650 satisfied customers
Just completed a valve job on my 1990 300 SE Mercedes
Just completed a valve job on my 1990 300 SE Mercedes it's idling extremely high and it's possible that I've got some of my vacuum lines crossed up can you help me?… read more
Marty
Marty
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55,650 satisfied customers
Marty We still didn't figure out the problem with this
Hello Marty We still didn't figure out the problem with this car? can you help I had already paid thanks my cell(###) ###-####… read more
Marty
Marty
Mercedes Technician
55,650 satisfied customers
hello, on a 1989 560 sl the sparks continuusly get fouled with carbon. 76000 miles spark
hello, on a 1989 560 sl the sparks continuusly get fouled with carbon. 76000 miles sparks, cables, distributor cap, rotor arm, ignition coil, ezl renewed. fuel injectors and seals renewed, idle system… read more
Marty
Marty
Mercedes Technician
55,650 satisfied customers
mercedes 500SL: 1992 mercedes 500SL will not start
1992 mercedes 500SL will not start I have changed the following: Rotor & Distributor, air filter, & the fuses in the engine bay, and spark plugs and it started. Then changed the oil, oil filter, spark… read more
Marty
Marty
Mercedes Technician
55,650 satisfied customers
I have a 1989 Mercedes Benz 300SE with 200,000 miles on it.
I have a 1989 Mercedes Benz 300SE with 200,000 miles on it. The car sat for 6 years without running. I drained and flushed the gas tank, changed the fuel pump and filter. It started right up but ran a… read more
Marty
Marty
Mercedes Technician
55,650 satisfied customers
Mercedes-Benz SL 300: Hi I got a problem with my Mercedes 300
Hi I got a problem with my Mercedes 300 SL model 1991, the signal amplifier for the sparks / interjection is randomly failing. It's like the lock of the car is activated everything is working but the … read more
Marty
Marty
Mercedes Technician
55,650 satisfied customers
Mercedes-Benz 500SEC: Hello,I question a question about a 1985
Hello,I question a question about a 1985 mercedes 500 sec,on the CIS fuel distributor,having an issue with long crank time and when started run rough for about 30 to 40 seconds then smoothes out start… read more
Marty
Marty
Mercedes Technician
55,650 satisfied customers
HOW TO ADJUST IDLE FUEL MIXTURE FOR THE 1987 560..FUEL SMELL
i AM STILL WAITING FOR AN ANSWER ON HOW TO ADJUST IDLE FUEL MIXTURE FOR THE 1987 560 SL. I SUBMITTED THIS QUESTION LAST WEEK. ISSUE IS HEAVY FUEL SMELL AT IDLE. ACCELERATION TIP-OFF LEAVES BLUE FUEL C… read more
Marty
Marty
Mercedes Technician
55,650 satisfied customers
Injectors, plugs, wires, rotor & cap..Runs great..catalytic
same 1987 560. changed injectors, plugs, wires, rotor & cap. Runs great, good power, but has an excessive fuel smell (catalytic working hard). how is the idle mixture controlled?… read more
Marty
Marty
Mercedes Technician
55,650 satisfied customers
1986 560sl: car warms..fat or rich i have changed many parts
Ihave a 1986 560sl when car warms up it starts to run fat or rich i have changed many parts with no changes please help.Glenn… read more
Marty
Marty
Mercedes Technician
55,650 satisfied customers
1991 560SEC: the idle is very rough..quits..sitting..block
I have a 1991 560SEC. Sometimes, but not always, the idle is very rough. Also, about once a month the engine quits after I start it when it's been sitting for half an hour and drive about a block. I w… read more
Marty
Marty
Mercedes Technician
55,650 satisfied customers
1991 Mercedes 560SEC: idles rough..stalls..It backfires..plug wire
My 1991 Mercedes 560SEC starts, idles rough and stalls when put into drive... It backfires as I drive. I put an inductive timing light on each plug wire and they are all getting spark. The car also la… read more
Marty
Marty
Mercedes Technician
55,650 satisfied customers
I have a 1981 mercedes benz 380sl, we have replaced, fuel distributer,
I have a 1981 mercedes benz 380sl, we have replaced, fuel distributer, fuel warm up regulator. It idles great when cold, when the engine warms up, it runs rich. I have tested the O2 sensor, frequencey… read more
Marty
Marty
Mercedes Technician
55,650 satisfied customers
1985 Mercedes 190E: replacing..fuel pump, fuel pump relay, fuel filter
Hi, you answered a question for me in the past and were right on! I have a 1985 Mercedes 190E with a 2.3 engine. It had been sitting for several years and it took replacing the fuel pump, fuel pump re… read more
mbfixer
mbfixer
Shop manager
High School or GED
453 satisfied customers
1989 Mercedes: rough..extremely smooth and good when warmed..gauge
1989 Mercedes 560 SL runs extremely rough primarily when first cold started.. Will often run extremely smooth and good when warmed up.. Economy gauge is pinned to the right very often.. Higher speed i… read more
Marty
Marty
Mercedes Technician
55,650 satisfied customers
1991 300sl: jumped..the battery cables..backwards..mechanic thinks
I have a 1991 300sl My neighbor jumped me off and hooked the battery cables backwards Now it doesn''t start. My mechanic thinks it is a total loss--he can''t find the problem and has thrown up his han… read more
MBGuru
MBGuru
Bachelor's Degree
282 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

55,650 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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