Ferrari Mailing List: Re: 328 run on

[Jeff Greenfield (coyote]

You may have one or more leaking injectors, or the plate in the air  
flow meter is not fully returning when the engine is shut off. Either  
of these, could cause a small amount of residual fuel in the cylinders  
to ignite when the engine is shut off.

Any difficulty starting the engine when hot (as in 5-10 minutes after  
it is shutt off when hot)?

This usually indicates a small loss of residual fuel pressure due to  
an internal leak (injectors, fuel pump check valve, etc).

Jeff

Sent from my iPhone

On Jul 1, 2010, at 8:16 PM, James Cunningham <vikelj [at] comcast.net> wrote:

> Sometimes (not always), I get a slight run on after I turn the engine
> off.  Sometimes it is just a small pop.  What could be the cause of
> this?  Thanks.
> Jim
>
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