re: rough running under load, was E28 problems

[jkerouac <jkerouac@xxxxxxxxxxxxx>]

re: rough running under load, was E28 problems:

     Common fuel injection problem which I experienced on a several E30 
and big 6's over time is a weak ground developing.
Check the connections for the Brown (ground) wires from the harness to 
the fuel rail or intake manifold.  Remove the wires, then using a file 
clean both the bolt eyelets and the surfaces they contact on the engine.
     While you're at it, also check the ground from the battery to the 
engine.
These are 'back to basics' items, but are commonly overlooked in favor 
of the 'grand diagnostic' approach that its easy for many of us [me too 
for sure] to get trapped into.

     Verifying that you have a good ground may not fix anything, but 
will eliminate the chance that a weak ground is causing a weak spark.  A 
weak spark will fire ok with less fuel and swirl in the chamber such as 
at idle.
Good Luck,

'jk

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