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1990 420SEL no start. Sat for 10 years, replaced fuel pumps
1990 420SEL no start. Sat for 10 years, replaced fuel pumps and filter, ran but no power, nothing over 25MPH. Removed and cleaned tank and replaced screen, no difference. Replaced O2 Sensor, no differ… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
From cold start engine fires, refuses to take throttle from
From cold start engine fires, refuses to take throttle from idle unless its gently applied. On deceleration to idle engine will snuff out, with makes it very hard to drive in traffic. I would like a f… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
450 SL: I have a 1978 Mercedes Benz SL the fuel pump has been
I have a 1978 Mercedes Benz SL the fuel pump has been replaced and the fuel is getting to the carburetor as long as we poured gasoline into the air filter area it will run for a few seconds then it ju… read more
Marty
Marty
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Associate Degree
29,460 satisfied customers
420sel: I have a91 420sel mecedes benz I get gas to the
I have a91 420sel mecedes benz I get gas to the motor but not the throttle body any help be great thank you… read more
Marty
Marty
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Associate Degree
29,460 satisfied customers
560 sl: Marty, I have a 1986 Mercedes 560sl with 116,000
Marty, I have a 1986 Mercedes 560sl with 116,000 miles. Has been sitting years. Replaced all belts fulids, furl pumps, fuel filter, air filters plugs and wires.ENGINE NOW IDLES ROUGH AND WHEN YOU ACCE… read more
Marty
Marty
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Associate Degree
29,460 satisfied customers
Hello Marty. I changed the fuel distributor to the 81 Sl 380
Hello Marty. I changed the fuel distributor to the 81 Sl 380 and it seems to turn off right after the start (I don't even touch the pedal). Before it was turning on fine just took a long time to warm … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
380SL: Hey there, Ive a 1980 380SL with 187K miles. It
Hey there, I've a 1980 380SL with 187K miles. It has developed a rough idle recently and I'm wondering if the problem is the fuel distributor. I replaced the rotor cap, plug wires and plugs, and notic… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
1984 260E: sputters..clogged fuel line (or filter)or broken fuel pump
My 1984 260E Mercedes Benz will turn over when fuel is put directly in carburetor. However, it soon sputters to a stop. Are there any other possibilities besides a clogged fuel line (or filter) or bro… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
SL..gasoline..flooded sometimes when I slow down after highway driving
My 1986 560 SL does not start when its cold, unless I pour gasoline in the carburator manually and hold the trutle open a little, anyone knows what might be the problem? and where the part is located … read more
Matt
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1988 560sl: Replaced battery..Changed spark plugs..but not smooth
Hi, I just recently purchased an 1988 560sl that had been setting for a few years. Replaced battery, and it started up but ran very poorly. Changed spark plugs that helped but not smooth running yet. … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
SL..my garage from 2005 without being driven..full tank..parked
I have a 1980 450 SL that was restored some time around 2000. It has been sitting in my garage from 2005 without being driven. It had a full tank of gas when parked. I have drained the gas tank and re… read more
Marty
Marty
Mercedes Technician
Associate Degree
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86 mercedes: sel fuel pumps..new fuel filter..throttle body
have a 86 mercedes 560 sel fuel pumps coming on and a new fuel filter but no fuel to throttle body… read more
Marty
Marty
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Associate Degree
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1986 Mercedes: im workin..it fires with priming the throtlebody
I'm workin on a 1986 Mercedes 300E. It's a no start. It has spark, and it fires with priming the throtlebody. I have fuel at the fuel regulator and at the input of the injector pump, but no fuel comin… read more
Dr. Hamman
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1977 mercedes 450slc: high pressure..resistor..ighition coil..it cuts
the 1977 mercedes 450slc, pparked for 5 years and now prepared for a run, we drained the old gas and replaced the fuel pump and filter, it would not start then pulled all ejectors and half of them wer… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
mirage: idles..black smoke..highway..running good the exhaust smells
From My 1988 560 SEL idles ruff, black smoke, and poor milage(12 mpg). If you remove the air cleaner and hit the injector pump a light tap with a hammer it stops smoking and the milage returns to abou… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
1986 300E: Distributor..the tank/fuel pump..intake manifold
1986 300E Fuel Distributor (Bosch) - There is pressure from the tank/fuel pump up to the input port of the fuel distributor. However, there is no fuel coming through the distributor to the injector(s)… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
1986 420sel: fuel pump relay..you check the fuel pressure at
1986 420sel Where is the fuel pump relay? Are there 2 fuel pumps? Where do you check the fuel pressure at?… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
84 Mercedes 500SEL: idle..the engine is warmed..restarting..quits
I have an 84 Mercedes 500SEL with a lowspeed/idle problem. After the engine is warmed up, restarting it is hard. It starts as normal then quits, as if it is not getting any fuel. It will then start on… read more
KJ
KJ
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Master's Degree
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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

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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

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Mercedes-Benz Master Certified technician

Matt

Matt

Engineer

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

promerc

promerc

mercedes diagnostic technician

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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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