Ferrari Mailing List: Re: 328 fast idle question--hit a bump?-reply

[LtWacko (ltwacko]

I haven't done it in years, but someone remind me.  Can't you spray WD-40 or 
something around the hoses and intake looking for the leak.  The idea is that 
the engine will ingest this and affect the idle.  Again, I haven't had a car in 
years that needed this test.  I usually did something stupid that required its 
replacement first.

Rodney


In a message dated 09/28/08 05:16:30 Central Daylight Time, ferrari-request 
[at] ferrarilist.com writes:
Date: Sat, 27 Sep 2008 15:20:36 -0700 
From: "Doug and Terri Anderson" <dnt [at] dock.net> 
Subject: Re: [Ferrari] 328 fast idle question--hit a bump?-reply 
To: "Robert Rehkopf" <CaptRehkopf [at] Comcast.net> 
Cc: 'The FerrariList' <ferrari [at] ferrarilist.com> 
Message-ID: <001901c920ef$473889d0$b025f0d8 [at] YOUR6EA8154886> 
Content-Type: text/plain; format=flowed; charset="iso-8859-1"; 
   reply-type=original 

Sounds nice Robert - um, the plenum is the big ribbed aluminum air box atop 
the intake trumpets.  Center of the engine bay with the big 3 inch air hose 
going to it from the CIS fuel metering device. 

There are two hoses, I believe, coming off the left side and one big one 
from the front.  This front one goes to the additional air valve - [left 
side and used at warm up time - at the front - front is towards front of 
car - of the plenum is also a fuel hose from the injector distributor.  This 
spritzer should have a wire going to it.  When first starting up the fuel 
gizmo receives a signal to richen up the fuel mixture and it spritzes fuel 
into the plenum - a very rich mixture - and the air valve allows additional 
air in to make up the correct mixture.  As the engine warms up the 
additional air valve closes off.  Sayyy - the air valve should have a wire 
going to it too - make sure it is firmly attached] 

Sometimes, on a CIS engine, a loose oil filler cap will cause the engine to 
hunt - so will a loose dip stick.  Tho it doesn't sound as if this is your 
problem. 

This year CIS should have all sorts of rubber hoses - and as one fellow 
lister, Ed, said they are 20 years old, probably pretty stiff lot. 
Therefore prone to crackage (highly technical term).  Just follow each hose 
with your hands and lightly tug and wiggle.  I have pictures of hoses nested 
way down in the engine that had the bottom crack off in big elliptical moon. 
Ayep - two pieces. 

This outcome happened as a result of a shock event - what ever it is - the 
culprit was probably just waiting to surprise you. 

Onward and keep us informed. 
DOUG