Ferrari Mailing List: Re: 328 reluctant dead cold start

[clyderomerof4 (clyderomerof4]

This is a good point here,with all these mods there is no telling what the real 
issue is.

Clyde
Sent via BlackBerry by AT&T

-----Original Message-----
From: Jim Conforti <lndshrk [at] xmission.com>
Date: Tue, 28 Sep 2010 19:39:27 
To: Clyde<Clyderomerof4 [at] bellsouth.net>
Cc: Ferrari List<ferrari [at] ferrarilist.com>
Subject: Re: [Ferrari] 328 reluctant dead cold start

Graham,

If you have a MOTEC, then NOTHING about the EFI is as it was.

Who tuned the thing?  Do they have the slightest clue?

Simple test.. When it finally starts, is there a plume of smoke from
the exhaust or not?

Plume = rich or wet start

None = lean or dry start.

Start there.

On 9/28/2010 6:45 PM, Grahame Reinthal wrote:
> Wow, thanks for the quick responses. Just to give you a bit more information
> and answer your questions, the motor has done about 40,000km. It's a little
> bit difficult to pinpoint the issue because, although it is a 1988 Mondial
> motor, it has been transplanted into my 1977 308gt4. I have also installed
> EFI (348 rails and injectors plus various sensors) with a high pressure fuel
> pump, different ignition modules and the computer is now a MoTec. Everything
> else about the motor is essentially standard and I still use the original
> plenum with its cold start sensor/injector (which I guess could also be the
> culprit). Once it is up and running, the motor runs perfectly. 
> 
> Also found an old post in FerrariLife which said the Thermal Time Switch
> sensor on the manifold senses the block temp, and injects fuel into the
> cylinders until the car warms up. If it isn't working probably, it's a real
> bitch starting when cold and will run rough for a while until the block
> heats up. I guess this is also referring to the cold start sensor/injector
> set-up.
> 
> Clyde, I'll go out now to check the connections to the sensor in the coolant
> recovery tank. Also, thanks for the "Start easy first then go hard" advice.
> ;-)
> 
> Rick, yes, I have checked all fuel lines and there is no external leakage.
> Internally, there is an in-line fule pressure regulator. After it has been
> sitting for a week or more, I make sure all the lines are fully pressurised
> before I start cranking, by turning on the ignition till the pump stops,
> then off, then on again till the pump stops, then off, then on again. I do
> this until there is no more priming. Only then do I start cranking. 
> 
> 
> Cheers,
> 
> Grahame
> 
> 
> -----Original Message-----
> From: Rick Meisch [mailto:Meisch [at] sbcglobal.net] 
> Sent: Wednesday, 29 September 2010 10:04 AM
> To: Grahame
> Cc: The FerrariList
> Subject: Re: [Ferrari] 328 reluctant dead cold start
> 
> Sorry hit send before finishing....
> Continuing thought from other message...
> What I am thinking may be the fuel regulator or even injector leakage.  
> 
> On Sep 28, 2010, at 6:48 PM, clyderomerof4 [at] bellsouth.net wrote:
> 
>> Chk the connections to the senor in the coolant recovery tank this tells
> the computer the car is cold. Start there 
>>
>> Clyde
>> Sent via BlackBerry by AT&T
>>
>> -----Original Message-----
>> From: "Grahame Reinthal" <grahame [at] reinthal.com.au>
>> Date: Wed, 29 Sep 2010 09:34:36 
>> To: Clyde<Clyderomerof4 [at] bellsouth.net>
>> Cc: The FerrariList<ferrari [at] ferrarilist.com>
>> Subject: [Ferrari] 328 reluctant dead cold start
>>
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