[W126 Coupe] rough idle

[Jonathan]

Really??  I've been through some 15+ units professionally, sold @ least 
2X that w/ nary a problem.  
The Python units were horrendous, but the guy @ CIS Flowtech Really 
knows his FD's and does great work by all accounts I've heard.

I don't think MB is selling New anymore..  You can buy a Bosch reman for 
about 2K (or I have them on special via my site for 1100:)

Jonathan


Gerry Van Zandt wrote:

> Reman fuel heads (fuel distributors) in general are, I hate to say it, 

> problematic -- even the rebuilds that Bosch themselves do. Your best 

> solution -- and I know it is not cheap -- is to get a factory new unit 

> from MB. Last time I checked they were over $2K from MB, but at least 

> they have a warranty on them, and you know what you are getting.

>

> This definitely sounds to me like a fuel distributor or related issue. 

> My second guess is a vacuum leak -- similar deduction to you. Have you 

> thoroughly checked out the ENTIRE vacuum system for leaks?

>

> Cheers,

> Gerry

>

>

>

>

>

> On Aug 9, 2007, at 4:28 PM, mbcoupes-request at mbcoupes.com wrote:

>

>> Message: 8

>> Date: Thu, 9 Aug 2007 11:43:45 -0700

>> From: "Tim Graney" <graneyt at americancylinderhead.com>

>> Subject: Re: [W126 Coupe] rough idle

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

>> Message-ID: <000001c7dab5$37d06b10$7901a8c0 at timpc>

>> Content-Type: text/plain; charset="us-ascii"

>>

>> I bought the FD from German Star...? I did replace all the rubber

>> gaskets in the plenum. vacuum stays nice and steady but does hiccup

>> every once in a while. I have looked till the cows come home for any

>> vacuum leaks. where does one get the right spark plugs...these are Bosch

>> plugs. what gap should they be? Thanks again

>>

>

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