AW: [DML] 3 Brass Screws Infront Of Engine
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AW: [DML] 3 Brass Screws Infront Of Engine



Hey Dani,

don't know what kind of car you have, but your side note 
doesn't fit on my Delorean or any other non modified one.

The fans don't increase idle speed and I don't know why 
playing with the brass screws would do anything to the
mixture at all.

Opening the brass screws a bit may reduce idle hunting.
But opening too wide will rise it above 775rpm so that
the electronical idle system can't reduce it anymore.

Elvis & 6548 (in winter sleep)





The idle speed motor takes the place of the 3 brass screws, this is
why they are not needed on the DeLorean. Certain versions of the PRV
(such as Carbureted) didn't have the idle speed motor and needed these
screws to adjust the amount of air each bank of cylinders needed.
Unless you have no idle speed motor-keep them all seated. 

As a side note:
The idle speed motor regulates the amount of air going into the
engine, thats why when your cooling fans kick on- your engine revs
higher to compensate for the increased power draw (Increasing
air=Increased RPMS=More power from alternator)-the idle motor adjusts
allowing additional air to increase the RPMS. Adjusting the screws
with the idle motor will possibly allow too much air, which will
eventually lead to mixture problems depending on how much extra air it
is getting.

-----Dani B.#5003






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