[W126 Coupe] Shaky Start!!

[Camran Nassiri]

Thanks Dick- You have always been very informative and helpful.  I 
appreciate your advice and start with a can of GB-44K.
Thanks,
Camran



>From: Dick Spellman <spell.yy at verizon.net>

>Reply-To: Mercedes Coupes Mailing Lists <mbcoupes at mbcoupes.com>

>To: Mercedes Coupes Mailing Lists <mbcoupes at mbcoupes.com>

>Subject: Re: [W126 Coupe] Shaky Start!!

>Date: Thu, 08 Mar 2007 11:34:16 -0500

>

>Hi Camran:

>

>On the coupe with such low miles, why not try a can of BG-44K to see if

>you can clear any build-up on the injector nozzles.  The injectors and

>or throttle plate may just be gunked up.  One tank on BG-44K will either

>clear things up or not.  Could also be one or more injector seals has

>got a leak but, that would give you a miss at idle once warmed up. On

>the 420, I'd say it's due for injectors.  I'd also check the fuel

>distributor control piston seal.  It's simple and you can check it 

>visually.

>

>

>Start the engine for a minute or so to get system pressure up.  Turn

>engine off.  Then just grab a flashlight, remove the air cleaner and

>fully depress and hold the air flow meter plate downward.  While it's

>being held down, shine the flashlight in there towards the hinge (pivot)

>side and see if after a few seconds the area looks wet (shinny).  If dry

>you are all set.  If wet, you need the $1 seal to be replaced.

>

>Regards,

>

>Dick

>

>Camran Nassiri wrote:

> > Thanks Rich for your info.  I have decided to get the injectors changed 

>and

> > solve for this problem.  I do appreciate your response.

> >

> > Camran

> > 90 560SEC, 91 420SEL

> >

> >

> >

> >> From: "richard jaffe" <rsjaffe1 at msn.com>

> >> Reply-To: Mercedes Coupes Mailing Lists <mbcoupes at mbcoupes.com>

> >> To: "Mercedes Coupes Mailing Lists" <mbcoupes at mbcoupes.com>

> >> Subject: Re: [W126 Coupe] Shaky Start!!

> >> Date: Tue, 6 Mar 2007 16:08:05 -0500

> >>

> >> I had the same problem and did all the same things you mention also to 

>no

> >> avail. I just recently replaced all 8 fuel injectors, seals, holders 

>and

> >> air tubes. The car now fires up immediately and is smooth as a baby's 

>rear

> >> end. The old fuel injectors were clogged and leaking badly.

> >>

> >> Rich Jaffe

> >> 85 500 SEC Euro  259K

> >> 83 300 SD   192K

> >>   ----- Original Message -----

> >>   From: Camran Nassiri<mailto:mbzman560 at hotmail.com>

> >>   To: mbcoupes at mbcoupes.com<mailto:mbcoupes at mbcoupes.com>

> >>   Sent: Monday, March 05, 2007 11:16 PM

> >>   Subject: [W126 Coupe] Shaky Start!!

> >>

> >>

> >>   I have a 1990 560SEC (52K miles) and a 1991 420SEL (110K miles), when 

>I

> >>   start both cars the the engine shakes for a few seconds (maybe 15

> >> seconds)

> >>   before it settles down and rides fine.  I have replaced the ignition

> >> wires,

> >>   plugs, rotor and cap to no avail.  I am not sure if this is caused by

> >> fuel

> >>   injector drain or what.

> >>   Any advice as to how to solve this problem; or, any advice as to

> >> alternative

> >>   way of starting the car to avoid the shakes (like turning on the key 

>for

> >> a

> >>   few seconds before crancking the engine)?  Any help is appreciated.

> >>

> >>   Camran

> >>

> >>   _________________________________________________________________

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> >>

> >

> >

> >

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> >>

> >

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>

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