Mercedes

Have Mercedes questions? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

I have a 1992 300E Mercedes that wont start at the moment…

Customer Question
I have a 1992 300E...
I have a 1992 300E Mercedes that wont start at the moment but even when it did start last time as soon as I put my foot on the gas pedal is stopped. Prior to that happening it ran out of gas and then it was hard to start so we installed a new distributor cap, spark plugs and wires, fuel pumps, rear shift position sensor. Any ideas.
Submitted: 4 months ago.Category: Mercedes
Show More
Show Less
Ask Your Own Mercedes Question
Answered in 2 hours by:
1/6/2018
Mercedes Mechanic: Marty, Mercedes Technician replied 4 months ago
Marty
Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 55,104
Experience: Bosch Certified Master Tech. Over 35 years experience.
Verified

Hi, my name is***** you remove the air cleaner and spray starting spray into the intake will the car fire and run as long as you spray the starting spray?

Ask Your Own Mercedes Question
Customer reply replied 4 months ago
She said if she sprays it in she can start the car but as soon as she hits the gas it cuts off. She thinks she is getting too much air in her intake and my friend said she had vacume leaks?
Customer reply replied 4 months ago
She said if she sprays it in she can start the car but as soon as she hits the gas it cuts off. She thinks she is getting too much air in her intake and my friend said she had vacuum leaks?
Mercedes Mechanic: Marty, Mercedes Technician replied 4 months ago

Ok, so at least you know that the ignition system works. If there are vacuum leaks that are keeping the car from running they would have to be big vacuum leaks. Can she get the car to start and idle on its own?

Ask Your Own Mercedes Question
Customer reply replied 4 months ago
A friend our hers was able to get the car to start and idle. But as soon as he left she was unable to get it to do the same she is not able to get it to run at all.. Somehow running out of gas has triggered this problem. Once she put the gas into it would not start. She then had fuel pumps installed. Still nothing so she had distributer cap and rotor and still nothing. Then wires and spark plugs into it and then it turned over but as soon as she hit the gas it died. She then installed the crank shaft position sensor in the rear and she hasn't even tried to start it since this time.
Customer reply replied 4 months ago
Once she put the spray on the air filter intake she was able to get the car to start but then it died as soon as she hit the gas..
Mercedes Mechanic: Marty, Mercedes Technician replied 4 months ago

Since the car will run on ether it tells you that you have a fuel delivery issue. The spark plugs, cap, rotor, wires and crank sensor are not the problem. Since the car idles or idled for awhile it tells you that there are no large vacuum leaks that are causing the car not to run. Has she replaced the fuel filter?

Ask Your Own Mercedes Question
Customer reply replied 4 months ago
The fuel filter was changed with the fuel pump. She wants me to say she held her hand on top to the intake manifold where you spray the spay and it started as long as she held her had on top of it cut off.
Customer reply replied 4 months ago
But as soon as she took her hand off the car died.
Customer reply replied 4 months ago
Once the person in the car hit the gas that is.
Mercedes Mechanic: Marty, Mercedes Technician replied 4 months ago

Ok, then she should inspect the hoses that go to the idle control valve. The hoses can split and cause the engine to run lean. She needs to inspect both ends of the hoses. The opposite end from the idle valve is hard to get to but she needs to check to see if it is split. She should also check the fuse in the overvoltage protection relay located behind the battery. If the fuse is blown or if the relay is bad it will not want to start when cold. If she can keep it running until it warms up a little by holding her hand over the air intake and it still dies when it warms up I doubt that the relay will be the problem.

Ask Your Own Mercedes Question
Customer reply replied 4 months ago
Thanks, ***** ***** trying to rate you but it is not letting me.
Mercedes Mechanic: Marty, Mercedes Technician replied 4 months ago

You're quite welcome. You should be able to rate now.

I'll be here if you need anything.

Ask Your Own Mercedes Question
Was this answer helpful?
Ask Marty Your Own Question
Marty
Marty
Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 55,104
55,104 Satisfied Customers
Experience: Bosch Certified Master Tech. Over 35 years experience.

Marty is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible.

CharlesWalnut Creek, CA

As a single woman, I really appreciate an excellent and affordable opinion.
Thank you Geordie, I will not hesitate to contact justanswer in the future!

SueCharleston, WV

Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff.

JimCastleberry, FL

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

< Previous | Next >

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

55,104 satisfied customers

Bosch Certified Master Tech. Over 35 years experience.

Lou P. master tech

Lou P. master tech

Mercedes Technician

3,771 satisfied customers

15 years master certified 100% fix rate and have access to factory radio codes, wiring, and instructions.

Michael Warfield

Michael Warfield

Factory Mercedes-Benz Technician

3,131 satisfied customers

Mercedes-Benz Master Certified technician

Matt

Matt

Engineer

602 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.

< Previous | Next >

Related Mercedes Questions
Mercedes-Benz 230E: Hi, I have a 1991 Mercedes W124 230E which
Hi, I have a 1991 Mercedes W124 230E which is having stalling/rough idle problems… read more
Marty
Marty
Mercedes Technician
55,104 satisfied customers
i get the codes for a check engine light on my 1991 mercedes 300e?
how do i get the codes for a check engine light on my 1991 mercedes 300e?… read more
Marty
Marty
Mercedes Technician
55,104 satisfied customers
450SL: My 450SL was using a lot of gas--8 MPG was maybe average.
My 450SL was using a lot of gas--8 MPG was maybe average. I did a "spray "test and discovered there were vacuum leaks at the Fuel Distributor (FD) and most of the injectors--which had cracked housings… read more
Marty
Marty
Mercedes Technician
55,104 satisfied customers
What kind of battery is the auxiliary battery in an E350
What kind of battery is the auxiliary battery in an E350 wagon? And can I replace it myself? … read more
Kevin
Kevin
workshop foreman /master tech/mot tester
1 satisfied customers
Battery, ABS, etc are coming on after changing the battery
Battery, ABS, etc are coming on after changing the battery and aux battery … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,771 satisfied customers
Mercedez ml500, 2005 I need to replace brake pads and rotors
Mercedez ml500, 2005I need to replace brake pads and rotors Front and back I never done this to this car, is there something different/ special that i need to account for?… read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
Changed out the Spark Plugs on my 1999 SL 500 AMG first the
Changed out the Spark Plugs on my 1999 SL 500 AMG first the left side. Car ran great. Next day the Right side, now the car Idles rough, Stalls and when you give it gas it bogs down no power … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,771 satisfied customers
Random misfire from 1 2 3 and 4 changed all spark plugs and
random misfire from 1 2 3 and 4 changed all spark plugs and coils still same codes no injector pulse from those cylinders … read more
Wolfgang
Wolfgang
7 satisfied customers
Misfiring 0n sparks 5 and 6. Replaced spark plugs, wires,
Misfiring 0n sparks 5 and 6. Replaced spark plugs, wires, coils, and position sensor and still getting misfire … read more
Gary
Gary
Senior Technician
Vocational, Technical or Trade School
91 satisfied customers
Cannot get the rotor to release on the distributor. seems to
cannot get the rotor to release on the distributor. seems to be baked on as it is very fragile and flaking apart as I try to get it to loosen up so I can change it. … read more
Marty
Marty
Mercedes Technician
55,104 satisfied customers
I just replaced my spark plug wires and after I replaced
I just replaced my spark plug wires and after I replaced them my car started with a rough idle and when I gave it gas it just dies it ran fine before I touched it … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,771 satisfied customers
I was changing the spark plugs on a1999 c230,,and the wire
I was changing the spark plugs on a1999 c230,,and the wire connector that connects to the coil pack broke,,could I splice the wire and use another connector … read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
Costs to replace 8 spark plugs, clean all fuel injectors,
Costs to replace 8 spark plugs, clean all fuel injectors, replace left and right valve cover gaskets, replace tensioner on timing chain. … read more
Marty
Marty
Mercedes Technician
55,104 satisfied customers
1988 300e no power to coil. None. Pulling spark plugs.12
1988 300e no power to coil JA: Is the power loss consistent, or does it fluctuate? Customer: none JA: Are you fixing your 300E yourself? What have you tried so far? Customer: pulling spark plugs.12 te… read more
Marty
Marty
Mercedes Technician
55,104 satisfied customers
Spark plug gap? Smart Passion 2014. Am ready to install new
yes, am ready to install new plugs but need to verify plug gap … read more
Kevin
Kevin
workshop foreman /master tech/mot tester
1 satisfied customers
What is the spark plug gap for a 79 450SL, I put in all new
I put in all new injectors and sleeves plus rebuilt the fuel distribution block and now it won't fire.… read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
I changed the spark plugs on my 04 C240 and after doing so
Hello , I changed the spark plugs on my 04 C240 and after doing so the car had no power. I checked for spark at each plug, witch it had. then i replaced the plugs with a new set. … read more
heavy_chevy_396
heavy_chevy_396
Vocational, Technical or Trade Scho
2,518 satisfied customers
Hard start. 1989 SE300. Change spark plugs ,distributer
Yes ,change spark plugs ,distributer cap,router ,plugs wire … read more
Curtis
Curtis
Vocational, Technical or Trade Scho
1,697 satisfied customers
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.

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.

Show MoreShow Less

Ask Your Question

x