[W126 Coupe] fuel injectors

[Dick Spellman]

Josh Allen wrote:

> clay wrote:

>> Will just changing the fuel injector seals have any benefit on how 

>> the car runs ?

>> Thanks,

>> Clay

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>

> If the injector seals were leaking, IE, a vacuum leak, sure.

>

> I think I'd try to find a way to check the operation of the injectors 

> while you were there, though.

>

> On my car, I have at least one injector that's dribbling, from how it 

> behaves when I shut it down.

> (Rough to start, revs high if restarted a few minutes after shutting 

> it off, 5-10 sec cranking if it's been allowed to cool much beyond 

> that point.)

> From what I've been able to figure out, it appears that at least one 

> is dribbling, leaving the engine slightly flooded at first after 

> shutting it off, and loosing the fuel prime in the injector lines 

> beyond that point.

Josh,
It could just as easily be the cold start injector or the control piston 
seal.  Fuel pressures test will at least affirm there is a leak  Control 
piston seal is a common fault after 100k easily checked visually.
-\Dick