[Gmecm] 93 CHEVY g20 VAN

[Ford, Pat]

 Strange, the tracker and cavalier both have vacuum lines, come to think of it so does the tbi Subaru's.
 From what I learned at trade school, Phil is %100, and that jives with what I saw as a mechanic.
Pat

<-----Original Message-----
<From: gmecm-bounces at diy-efi.org [mailto:gmecm-bounces at diy-efi.org]On
<Behalf Of WopOnTour
<Sent: Saturday, December 31, 2005 3:50 PM
<To: gmecm at diy-efi.org
<Subject: Re: [Gmecm] 93 CHEVY g20 VAN
<
<
<Phil
<There is no vacuum signal required on a TBI as the point of 
<injection is 
<always at atmospheric pressure.The vacuum line used on a PFI 
<engine IS NOT 
<to alter fuel pressure to compensate for load in any way shape 
<or form. It's 
<to maintain a consistent pressure drop across the point of 
<injection when 
<lower pressures (vacuum) exist. If there is 18" of vacuum at 
<idle, the fuel 
<pressure will be reduced an equivalent amount (approx 9 psi)
<HTH
<WopOnTour
<----- Original Message ----- 
<From: "Phillip Kuhn" <pmkls1 at yahoo.com>
<To: <gmecm at diy-efi.org>
<Sent: Saturday, December 31, 2005 10:13 AM
<Subject: Re: [Gmecm] 93 CHEVY g20 VAN
<
<
<> It is throttle body, they are pretty much ALL simple
<> spring and diaphragm, and I'm still thinking they have
<> a vaccum source wether it comes from inside the
<> throttle body or has a separate vaccum line.
<>
<>
<>
<>
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