OK, so why do I have too much black smoke?  Is my timing off?  Is my EGR 
messed up?  I unhooked the EGR and plugged the vac line but still the same

---
Kaleb C. Striplin
Cox Auto Trader
730 PP Supervisor

----- Original Message ----- 
From: "Marshall Booth" <[EMAIL PROTECTED]>
To: "Mercedes Discussion List" <mercedes@okiebenz.com>
Sent: Thursday, August 23, 2007 4:17 PM
Subject: Re: [MBZ] 603 ALDA tweaking and fuel economy


> Curt Raymond wrote:
>> I was under he impression new ones were not matched by default...
>> Could mismatched injectors lead to lowered economy or would better 
>> matched injectors give better economy?
>
> Bosch rebuilds and new injectors are matched to within 10 bar. To match
> them closer requires that YOU or your shop test them! All of the
> injectors in an engine should be matched within 5 bar (if matched within
> 2-3 bar engine idle will be smoother - if the rest of the engine is in
> good shape). A 10 bar range will not have much effect on fuel economy,
> but the engine idle will be rough. If the injectors dribble or the spray
> pattern is well out of specifications economy will drop. An injector in
> a well maintained engine should last 150-250kmi!
>
> If the injection timing is more than a few degrees out of spec, economy
> and power will start to diminish. If the timer mechanism is damaged,
> economy drops.
>
> Marshall
> -- 
> Marshall Booth Ph.D.
> Ass't Prof. (ret.)
> Univ of Pittsburgh School of Medicine
> [EMAIL PROTECTED]
>
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