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Re: [T3] FI timing change for '72+?


On Sun, 2006-03-19 at 12:28, Toby Erkson wrote:
> Volkswagen Fuel Injection Technical Manual by Henry Elfrink
> Page 16:
> "Modified injection timing for type 3 engines
> Starting with the 1972 model year, fuel injection timing has been changed for
> type 3 engines.  A modified trigger contact unit changes the injection timing is
> such a way that fuel is injected behind the closed intake valves for all four
> cylinders."
> Thus, fuel is NOT injected into an open valve, only a closed one.  Is this true?
> Is there a way to identify if a FI car has this?  I didn't find any such info in
> my Bentley.
> 
See previous post, but I would think this is a function of the
distributor cam, not the electronics. The trigger points, IIRC, were the
same all the way thru, AND, they were used on other vehicles. Maybe Jim
A. can check and confirm this with some of the FI distributors he has.
-- 
Russ Wolfe
'71 FB AT
'66 FB MT
'64 T34 (not running)
'65 T1 (not running)
'05 KIA Sorento SUV
russw@classicvw.org
http://www.classicvw.org

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