videoviking

I have spark, as evidenced by spraying ether into intake, car runs, and runs strong.

I have fuel coming to the front. But not sure if it is going to the injectors or not. Took fuel distributor and injectors off my rusted, but running, 4kQ, but still nothing. Any ideas?

Whitjr

ISV? Spark plugs/igition harness?

Katman

Undo the top of the fuel metering unit so you can lift the air flap. ( you may need pliers or visegrips to pull up on the nut, as the fuel pressure is trying to pull it down. Be careful here, as you don't want to bend the air flap, or get any dirt in there..)

Bypass the fuel pump relay so the pump comes on. (You don't need the motor running to do this test. Better yet, it should be stone cold, so fuel spraying around won't catch on fire!)

Then try cracking one of the 5 injector banjo bolts on top of the fuel distributor. (BE VERY CAREFUL! FUEL should spray out).

IF no fuel here, then you should investigate why not.

Next,If you can get all (or even some?) injectors out of the head, you can test if they spray properly. AIm them into a small bottle (beer?), and fire up the fuel pump again.

Lift the air plate in the fuel distributor, and fuel should spray out the injector in a nice cone spray pattern (except maybe at real low rates, where it sort of dribbles out)

If you have spark, and even almost any amount of fuel coming out the injectors, you'd think it would at least sort of fire up..?

ralleyquattro

Coolant temp sensor (on the coolant hose outlet, bottom one). HTH

mt6127

If it pulls strong after say 2500 rpm, I'd look for a vacuum leak, dump in some injector cleaner and give the car a full tune (plugs, wires, rotor, cap - I had a bad wire do the same and the wire was like one year old) before looking at stuff like the air flow sensor plate. Check the boot, ISV rubber etc with some wd40 to see if it sucks anything in. At any rate, Blau has the Bentley trouble shooting grid online<ul><li><a href="http://www.blauparts.com/technical_tips/fuel%20injection%20troubleshoot/fuel_injection_trouble_4k.htm">FI Trouble shooting Matrix</a></li></ul>

videoviking

without ether, the motor won't even start. I have thought it might be a vacuum leak, but I should still get something, right?

My next step will be to see if I have fuel at the injectors. I am guessing not.

Is the injection system completely mechanical or could the ECU cause it to act this way?

videoviking

Thanks, I will try that tomorrow morning, and see if that works. The car sat for almost two years, and I am wondering if the ECU is messed up, and if so, would it cause the symptoms I am describing?

mt6127

If you don't think you're getting fuel to the injectors, start by jumping the FI Relay (I think its slot 10, and jumper the two large spades). This should let you hear the pump kick on with the key in position 2 and may build pressure to the injectors before you crank it.
If you fire up for about 15 sec then it dies, you either have low fuel pressure (bad fuel pump relays will do this) or it had a big air leak (ie it'll run until the CSV turns off). Sure the ECU can do this but I'd work through the Bentley trouble guide before thinking ECU. You can do some simple checks for voltage etc by pulling the connector off the ECU and probing with a multimeter.

Fox-2-4kq

Drain the tank and put some good gas in there. BTDT.