Ferrari Mailing List: Re: Elementary engine question -- NFC

[Stephen Sherman (stephensherman44]

I have complete ignition failure (Toyota, the ignitor, that is what Toyota calls it) failed, and yes it feel like brakes, of course it depend what gear your in as to how fast you slow down, the lower the gear the faster you slow down. I remember as kids we would shut of the ignition (that was in the era that the ignition key did not lock the steering) then turn the ignition back on to blow the guts out of the mufflers.

 

The main difference brtween lifting the throttle is that the engine is still firing even it is not receving enough fuel to maintain the rpm it is still firing, with the ignition off it slow down faster even if you have the gas pedal to the floor.

 

Stephen 

On Tue, Sep 4, 2012 at 10:14 PM, Grahame Reinthal <grahame [at] reinthal.com.au> wrote:

Have you ever had a complete, instant ignition failure? The car stops pretty quickly (feels like you hit the brakes) because with no spark there is thus no burnt fuel to keep things moving along and so it is just the vehicle inertia that keeps you rolling, but not for very far, unless you are pointing down-hill.

 

On the other hand, drive along a flat road at cruise speed, then take your foot off gas. The car slows gradually, suggesting that the motor is still receiving enough fuel to match the engine speed as the flywheel slows down, until it eventually slows to a stop and idle.

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From: Larry Bard [mailto:larrybard [at] hotmail.com]

Sent: Wednesday, 5 September 2012 12:24 PM

To: Grahame

Cc: The FerrariList
Subject: [Ferrari] Elementary engine question -- NFC

 

(Heck, things seem quite slow anyway.)

Is it generally true, at least with modern manual cars, that with the car in gear, but one's foot off the accelerator pedal, little or no gas will be fed to the engine, even if the RPMs are well above idle?

Thanks.

Larry

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