Re: [T3] FI doesn't want to run

[BOB2TYPE3S@aol.com]

In a message dated 4/1/06 3:27:00 AM Eastern Standard Time, 
jadney@vwtype3.org writes:

> With the key ON, depress the throttle slowly from the engine 
> compartment. As the throttle opens you should hear a series of clicks 
> from the injectors.

OK, when I first tried this, I got no clicks. I hooked a spare one (thanks 
Russ), and now I get a series of clicks (I didn't count them, but there were 
many).Now I can actually see the spray pattern out of the injector while doing 
this (see below). I haven't refered to Bentley yet on setting these, as I've a 5 
terminal switch that has 4 wires running to it (it's made that way, remember 
it's a t-4 system).
 
 >AND
 
 >With the key ON and the coil disconnected, use a wrench to slowly 
 >turn the engine over. Listen for the point where the injectors click, 
 >which indicates that they are opening. You can also mimic this by 
 >taking out the dist and turning it by hand, thus triggering the FI 
 >trigger points.

At first I wasn't getting anything. Pulled the injectors out and watched 
them. Number 1 was just drizzling when off, and a steedy pee type stream when 
energized. Number 2, 3 and 4 didn't do anything. Pressure would drop off after 
shut down due to it leaking. Once replaced, the system would hold better pressure 
after it was shut off. Used a spare t-3 FI dizzy (after checking the points 
in the bottom) for a trigger device, and then slowy replaced the injectors 
(checking for good ones that would spray). This was an interesting learning 
experience, due to being able to hear the pump cycle whenever a pair of injectors 
was energized, and watch the spray pattern. : )  After I got to thinking about 
the 1st test for a while, I grabbed my spare t-4 IAD and plugged that unit in 
(at the TPS), inplace of the one I had already installed. This brought a nice 
spray pattern out of the injectors as well. I'll change that in the morning 
when I go back to working on it again.
 
 >If you don't hear the clicks, then there's some problem. It could be 
 >anything from a bad ground, bad wiring, bad brain, to rust frozen 
 >injectors.
 
Yup, frozen injectors is/was the culprit. When I first pulled the right bank 
(1&2), I realized what was causing the big poof/bang... it was from the one 
leaking injector. Now I can pressurize the system, and it'll hold 18 to 20 psi 
after a half hour (means the pump is good, and the fuel pressure regulator is 
good (thanks Jim). I've still got to scrounge up 1 more good injector, then it 
should fire up. :O WOO HOO Thanks everone for your help.


Bob 65 Notch S w/ Sunroof and IRS
       71 Square, now a 2 seat Roadster, pics can be seen at; 
http://volksrods.com/forums/index.php?showtopic=2977 and now has a 2.0L  t-4  with D-jet FI 
engine transplant, just finishing up the details. : )
       

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