Ferrari Mailing List: Re: Bosch K Jetronic Ignition

[Jeff Greenfield (coyote]

Could be a couple of things ... Usually this sort of problem is due to an
internal leak in the fuel system causing a loss of 'rest' pressure.

Most common fault, is leaking injectors. Quite honestly, I've never seen any
CIS injector other than new, have a proper spray pattern. The replacement
injectors are an improved design.

Could also be a leaking check valve at the fuel pump, leaking cold start
injector, or the cold start injector firing when it is not supposed to.

FWIW, my QV will exhibit this behavior from time to time, usually when it
hasn't been driven in awhile. With regular use it seems to go away :-)

HTH,

Jeff

-----Original Message-----
From: Rui Gigante [mailto:rui.gigante [at] gmail.com] 
Sent: Monday, December 04, 2006 12:49 PM
To:  Jeff Greenfield
Cc: The FerrariList
Subject: Re: [Ferrari] Bosch K Jetronic Ignition

The car is difficult to start when warm, unless I step on the gas.
Apart from that it runs well but I believe it is a bit rich, judging by the
exaust ...

Rui


On 12/4/06, clyde <clyderomero [at] mycingular.blackberry.net> wrote:
>
> What's the car doing?
>
>
> Clyde
> Sent via BlackBerry from Cingular Wireless
>
> -----Original Message-----
> From: "Dave Craig" <dave.craig [at] sbcglobal.net>
> Date: Mon, 4 Dec 2006 11:19:58
> To:clyde <clyderomero [at] worldnet.att.net>
> Cc:"'The FerrariList'" <ferrari [at] ferrarilist.com>
> Subject: Re: [Ferrari] Bosch K Jetronic Ignition
>
> Rui,
>
> My advice would be to get a book called
>
> Bosch Fuel Injection & Engine Management
> How to Understand, Service, and Modify
> By Charles O. Probst, SAE
> By Bentley Publishers in Cambridge, Massachusetts
> Copyright 1989 and 1991
>
> Looks like it is $19.77 from Amazon.
> http://www.amazon.com/Bosch-Fuel-Injection-Engine-Management/dp/0837603005
>
>
> The back cover says that it covers Ferrari models: 308, 328, Mondial, and
> Testarossa (and lots of other non Ferrari cars).
>
> This book covers:  Theory of operation.  Troubleshooting, and service
> using
> common tools and equipment.  High performance tuning.  How to identify
> your
> Bosch system.
>
> For the following systems:
> LH-Motronic
> Motronic
> LH-Jetronic
> L-Jetronic
> D-Jetronic
> KE-Motronic
> KE-Jetronic
> K-Jetronic
>
> To be honest, I haven't really used it much, but it did answer the few
> questions I have had.
>
> Dave Craig
>
>
> -----Original Message-----
> From: Rui Gigante [mailto:rui.gigante [at] gmail.com]
> Sent: Monday, December 04, 2006 10:45 AM
> To: Dave Craig
> Cc: The FerrariList
> Subject: [Ferrari] Bosch K Jetronic Ignition
>
> Hi all,
>
> would anyone on the list have digitized information about the K Jetronic
> ignition found on the 328 ?
>
> I'm specifically looking for tuning and troubleshooting and someone
> mentioned that there is such a manual from Ferrari itself.
>
> Thanks !
>
>
> Rui
> 88' 328 GTS
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