Re: Air/Fuel Mixture control unit

["deloreanfl" <ericp@xxxx>]

Hi Mike,

Don't forget to install the rubber O-Ring that goes between the fuel 
distributor and the mixture control unit. I was told by several 
people that this wouldn't make a difference, and wasn't needed - but 
I forgot to replace mine one time...and had EXACTLY the same result 
you are having. My guess is that it raises the plunger pin just high 
enough from a rest position to make a difference. But hey, this is 
my guess: All I know is that my car wouldn't work without it!

Good Luck
Eric
Dunedin, FL
deloreanfl@xxxx



--- In dmcnews@xxxx, Senatorpack@xxxx wrote:
> 
> 
> Hello DML,
> 
> I'm helping out a new owner tune up his car and replace the 
fuel 
> injection system. We have reset the car back to factory settings. 
However we 
> have encountered a small adjustment issue.
> 
> Installed new fuel distributor and control pressure regulator, 
etc., etc., 
> on new owners car. What is proper way to adjust air/fuel ratio?
> 
> Engine starts, however only runs when fuel distributor is free 
(loose) 
> from mixture control unit. (Fuel lines attached) 
> 
> i.e. Engine will stall when three screws to attach fuel distributor 
to 
> mixture control unit is secure. Engine will run when screws 
removed, however 
> idle is rough.
> 
> Seems as though the plunger on the bottom of the fuel 
distributor is out 
> of sequence with the air plenum arm beneath the air box.
> 
> This is the first time that I have seen the air plenum and fuel 
distr. 
> plunger is out of alignment.
> 
> Thanks
> Mike