Mercedes/rough idle on 87 560SEL
Advertisement
Question
--in answer it has 247k miles,charlotte,n.c. is the closest city,the power isn't good when you try to accelerate quickly,it acts as if it wants to stall n sputter,the manifold is rust red on the front portion and white on the backside with some red spots,it does not puff smoke out of the oil filler,it is also hard to crank,my 1990 420sel hits almost immediately and idles very smooth,of course it only has 131k on it -----------------------
Followup To
Question -
i have replaced all vacuum hoses fuel rails all injectors have been checked and it still idles rough it has a rebuilt fuel distributor on the carb
Answer -
Answer:
How many miles on your car?
Where are you, nearest major city?
How is the power, like a rocket or rather weak?
Is the exhaust manifold rust red or more white?
With the engine running, if you remove the oil fill cap, does it puff smoke like a train?
asemastermechanic@juno.com
Answer:
Unbolt the exhaust from the manifold, and try starting the engine.
If it starts easier, there are 90% odds the catalytic converter has failed.
All of your air breather hoses should be brittle (cracking with age), they should be replaced.
Vehicle: 1987 Mercedes Benz 560SEL
Part: Breather Hose
-------------------------------------
Breather Hose
Valve cover to air filter housing.
---------------------------------
Breather Hose
Shut-off valve to check valve.
-----------------------------------
Breather Hose
Idle Valve to Connector
----------------------------------
Breather Hose
Valve cover to idle air distributor.
-----------------------------------
Breather Hose
Air Duct to Idle Valve
http://catalog.eautopartscatalog.com/mercedesshop/sophio/wizard.jsp?partner=merc
Related Articles
whunter
Expertise
Mercedes Benz diesel 1960 - 1985. Rolls-Royce or Bentley 1959 - 1978. Jaguar 1960 - 1989. MG 1959 - 1985. British 1923 - 1969. Micro and mini cars, an area of interest and study, I will try to answer questions on these. Domestic car/light truck 1903 - 1975
Experience
30 years Automotive Field Experience.
ASE Double Master Mechanic.
Organizations
ACTIVE MEMBERSHIPS:
Cadillac-LaSalle Club http://www.cadillaclasalleclub.org/
Rolls-Royce Owners Club http://www.rroc.org/
Lake Michigan Region
Motor Region http://www.rroc-mr.org/index.htm
Ohio Region
Modern Car Society http://www.rroc.org/members/regions/mcs/
Silver Cloud Society http://www.cloudsociety.org/
Rolls-Royce Foundation http://www.rollsroycefoundation.com/
Rolls-Royce Owners' Club of Australia http://www.rroc.org.au/cgi-bin/newforum/discus.pl
Mercedes-Benz Club of America http://mbca.cartama.net
International Stars Section http://www.internationalstars.org/
mercedesshop.com Diesel Discussion http://www.mercedesshop.com/shopforum/
JAGUAR CLUBS OF NORTH AMERICA http://jcna.com/forums/index.php
Jag-lovers - Jaguar Enthusiasts http://www.jag-lovers.org/
BMW CCA http://bmwcca.org
Motor City Chapter BMW CCA http://www.mpowerclub.com/cca/index.pl?cat_id=6
http://www.bmw-forums.com/forum/index.php?
Publications
Rolls-Royce and Bentley, Modern Lady.
Education/Credentials
ASE CERTIFIED: Master Auto Technician.
Brakes, Engine Repair, Auto: Engine Performance, Auto: Suspension and Steering,
Heating & Air Conditioning, Auto: Electrical/Electronics systems, Manual Drive Train and Axles
Automatic Trans/Transaxle
ASE CERTIFIED: Master Med/Hvy Truck Technician.
Brakes, Diesel Engines, Gasoline Engines, Electrical systems, Suspension & Steering, Drive
ASE CERTIFIED: Alt. Fuels: Light Vehicle Compressed Natural Gas
ASE CERTIFIED: Body: Mechanical & Electrical components
GM, Steering service class.
GM, Vibration correction training class.
ISO 9000 Training.
Blueprint Reading and Engineering Drawing Interpretation:
Study of Steam Power, Certificate of Achievement:
DALE CARNEGIE TRAINING COURSE:
Refrigeration applied electricity and heating Certification:
Refrigerant Transition and Recovery, residential and commercial service.
Refrigerant Transition and Recovery, (IMACA).
BASIC Skills:
Welding: ARC/Mig/tig and gas. Blue print reading/layout, steel erection and rigging, wiring AC/DC, hydraulics, pneumatics, some lathe, mill, fabrication and instrumentation experience.
©2012 About.com, a part of The New York Times Company. All rights reserved.