[Vwdiesel] Injection pump for beginners ---( the LDA -thingy )

H.Hagar h_hagar at prcn.org
Sat Jul 31 11:56:14 EDT 2004


 It was an ECO, but I have purchased a TD pump with the LDA.  
> I'm assuming that the little screw on the top of the LDA adjusts the amount 
> of 
> additional fuel admitted.  Where is the Fuel Volume screw located?  
Andrew

Andrew :   You have to drop your gasser trousers and put on diesel pajamas.

Gassers leaned out self destruct  ----diesels leaned out ?  ----they love it.

A VW diesel EGT  (pyrometer) gauge is nice, but not absolutely necessary to avoid damage.
The only way to damage a VW is to over-fuel over-boost and set timing of pump too
soon ---in that line of thinking.   Warning signs ?  smoke and coolant temp rising.And
big marbles at idle. ------GO lean man go lean. (like me).

Fueling srew located ?   There are two,  one on the pump , and one on LDA.
Both affect the full load stop. The screw on top of LDA sets the trigger point (PSI)
where more fuel is injected. Inside LDA is a big adjusting nut for setting volume per
stroke. BOSCH calls it a CONE adjustment ( bad translation IMHO) it is a rod
with a taper on it and a follower pin mounted 90 degrees to the rod moves the full load stop
inside pump.  So yes we have one more seal to deal with.

If given a choice always buy the pump with the LDA on it --even if you do not need
it at this time.

Hagar.


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