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  #1  
Old 03-22-2007, 07:43 AM
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560 SEL Idle "Again"

I have a big exhaust leak prior the muffler yet to be repaired and still am fighting the "start up rough idle" issue.

Once it runs for say 5 miles it clears up, sits more than 15 min , same thing.

Question: Could the "exhaust leak" have anything to do with the rough idle??
Still think it may be the accumulator or the injectors leaking down!

Help

John1
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  #2  
Old 03-22-2007, 03:16 PM
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John1, CHECK for vacuum leak, I'm sure u have a leak. Do u know how to check for that leak? If not I'll tell u:
First remove the air filter. While the engine is running pour some water on the injectors themselves (ALWAY pour AWAY from any electrical part). if u hared a wheezing sound then u must change the injector seals. Be aware that there are two seals, one up and one down. Change both on the injector that u hared a wheezing.

Also make sure that all of the spark plugs are fixed properly. Check all 8 sparks.

Finally, after u change all of the defective seals and checked the spark plugs, realign the fuel distributor if needed.

Good luck...
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380SE 1984 <------- Totaled by flipping accident
300SE 1988 <------- Sold
Volvo S70 2000 <---- 4 family
Opel Omega 2002 <-- 4 family
560SEC 1989 <------ Sold
560SEL 1990 <------ Sold
560SEL 1991 <------ 4 my mother
560SEL 1989 <------ Sold
600SEL 1992 <------ Current


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  #3  
Old 03-22-2007, 05:28 PM
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Not too sure what re-aligning the fuel distributor means..are you talking about the air metering plate??

How many miles on your 560? When was cap/rotor/wires done last? O2 sensor? Motor mounts? What kind of fuel mileage are you seeing? What spark plugs are you running?

Jonathan
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Old 03-22-2007, 05:30 PM
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I mean aligning the air/fuel mixture.
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Master Computer Engineer, A+, Network+, MCP/MCSA/MCSE 4/2k/2k3 - Messaging, MCTS, MCITP, MCT, Brainbench, ICDL and starting Ph.D

380SE 1984 <------- Totaled by flipping accident
300SE 1988 <------- Sold
Volvo S70 2000 <---- 4 family
Opel Omega 2002 <-- 4 family
560SEC 1989 <------ Sold
560SEL 1990 <------ Sold
560SEL 1991 <------ 4 my mother
560SEL 1989 <------ Sold
600SEL 1992 <------ Current


http://search.ebay.com/_W0QQsassZkhazenzcc
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  #5  
Old 03-22-2007, 05:31 PM
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Ahhh...adjusting I think is the word/context you were after;-)

Jonathan
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Jonathan Hodgman
http://www.blueridgemb.com/
Enthusiast Service, Restoration & Tuning.
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Located in the Atlanta area
Specializing in all pre and post merger AMG's including Hammers and DOHC M117 engines.
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  #6  
Old 03-24-2007, 09:00 PM
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i need to change my seals are they 2 for each injector?
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  #7  
Old 03-25-2007, 03:58 AM
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Arrow

Quote:
Originally Posted by johnlo View Post
i need to change my seals are they 2 for each injector?
Yes they are. One called Fuel Injector Seal and the other called Fuel Injector Holder. Here are the pics.

And don't forget the Air Distibution Hoses, you need two of the, one for each side.
Attached Thumbnails
560 SEL Idle "Again"-fuel-injector-holder.jpg   560 SEL Idle "Again"-fuel-injector-seal.jpg   560 SEL Idle "Again"-air-distibution-hose.jpg  
__________________
Master Computer Engineer, A+, Network+, MCP/MCSA/MCSE 4/2k/2k3 - Messaging, MCTS, MCITP, MCT, Brainbench, ICDL and starting Ph.D

380SE 1984 <------- Totaled by flipping accident
300SE 1988 <------- Sold
Volvo S70 2000 <---- 4 family
Opel Omega 2002 <-- 4 family
560SEC 1989 <------ Sold
560SEL 1990 <------ Sold
560SEL 1991 <------ 4 my mother
560SEL 1989 <------ Sold
600SEL 1992 <------ Current


http://search.ebay.com/_W0QQsassZkhazenzcc

Last edited by zcc; 03-25-2007 at 04:04 AM.
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  #8  
Old 03-25-2007, 10:00 AM
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If you current injectors have over 100K on them I would strongly consider replacing them as well.. For one, pricing on injectors continues to go up, so considering it's something that will need doing you can do it for less now then 6 months from now..

Plus, I'm really not a fan of double work...

Jonathan
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Jonathan Hodgman
http://www.blueridgemb.com/
Enthusiast Service, Restoration & Tuning.
Follow Us on Facebook!
Located in the Atlanta area
Specializing in all pre and post merger AMG's including Hammers and DOHC M117 engines.
Mercedes Repair Atlanta
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  #9  
Old 03-25-2007, 10:25 AM
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Cool fuel leakdown

Quote:
Originally Posted by John1 View Post
I have a big exhaust leak prior the muffler yet to be repaired and still am fighting the "start up rough idle" issue.

Once it runs for say 5 miles it clears up, sits more than 15 min , same thing.

Question: Could the "exhaust leak" have anything to do with the rough idle??
Still think it may be the accumulator or the injectors leaking down!

Help

John1
Use a pair of small vise grips and pop sickle sticks to squees the small hose from the accumulator, thenpull the hose off see if it leaks, run the car shut it down several times if at any time the fuel runs out replace it.JNT
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