Considering that some FI motorcycles will boil the gas in their tanks (Summer
gas boils around 400F), but not vapor lock, I believe it must be very rare to
see vapor lock in modern FI cars. More likely to have the pump succumb to the
heat via a loose solder joint or binding of the shaft. Pressurized,
waste-return fuel supply systems with the pump located in the tank (which sees
a slight vacuum during operation) work in a manner opposite of providing the
environment needed for vapor lock.
Speaking of fuel, I've got some 1/8" phenolic on the way for fuel rail
isolation. Has anyone had to put spacers on their injectors when doing this? It
does not seem that the injectors will move around with a slight gap in their
seats.
Thanks,
David
-----Original Message-----
>From: Ron Porter <ronporter@ameritech.net>
>Sent: Aug 2, 2006 2:02 PM
>To: 'Mike Manning' <mike_manning@yahoo.com>, shotimes@autox.team.net
>Subject: RE: [Shotimes] Stalling when very hot outside
>
>Fuel pump getting weak, and allowing vapor lock. This was the main problem a
>few SHOs had driving out to the CA Convention a couple of years ago.
>100-degree heat shows this right up!!
>
>Ron Porter
>
>
>-----Original Message-----
>From: shotimes-admin@autox.team.net [mailto:shotimes-admin@autox.team.net]
>On Behalf Of Mike Manning
>Sent: Wednesday, August 02, 2006 1:24 PM
>To: shotimes@autox.team.net
>Subject: [Shotimes] Stalling when very hot outside
>
>Hello, This is my first post to the group. My 93 SHO
>MTX generally runs very well. However the 4-5 times
>per year the temperature exceeds 95 degrees the SHO
>will stall and then it will have to cool 15-20 minutes
>before it will restart. Then when
>it gets hot again it will stall again.
>
>I ran the codes and they were: 172, 176, 556, 557,
>542.
>
>Has anyone experienced this type of problem that only
>happens in extreme heat? Any input you could pass on
>would be greatly appreciated.
>
>Thanks.
>
>Mike
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