Non starting 3b s2

[bluequattro]

Been sitting for a long time
Aftermarket immo now removed so will turn over
Have spark
Have fuel pump working
Have fuel to injector rail
Have power at injector harness
Turns freely but won't catch
What's next on the list please?

[Error404]

Check dizzy alignment

[bluequattro]

As in timing or as in plastic drive gear that breaks?
Do they have a crank timing pin
like aan

[newsh]

Yeah, 3B has a timing pin on flywheel, dizzy timing must be perfect on marks when zero mark is aligned in bellhousing window

[andy10v]

Any fault codes?

I would try unplugging the MAF, if the MAF is dead it wont start with it plugged in, but will run (roughly) with in unplugged)

[220bhp]

Fuel gone bad is a possibility, if its bean siting for a while
Was it running before.

[bluequattro]

Already done without MAF.
No difference. Fuel did smell bad. By time we got that far battery was going flat-maybe not enough power to switch injectors.
I've bought some fuel system cleaner and will add to tank. Hopefully if any fuel varnished will clear it up
Could injectors be blocked with bad fuel?

[quattro turbo 550bhp]

non start

when u say u got spark due u mean at the plugs or power at the coil

[bluequattro]

Spark from spark plug
Will be taking noid testers when I go back to the garage to check injector pulse and have a spare ecu to try
Could factory immo be at fault now?

[mackenzie50]

They don't like long periods of inactivity, do they!
- speaking from personal experience last winter my immobiliser decided to shut my car 'off' after 3 mths of not being used....

[bluequattro]

Runs on easy start!
Garage have had injectors out
Two dribble rest weak spray.
Can aan/aby ones be substituted?
S2 Central (thanks Paul) states same part number but different fuel pressure and nozzle numbers.
Only want them in to shunt the car around while I do other jobs
Will send 3b ones for refurb.
Also got my other 3b running today.
That one is over fueling!
Sooting the plugs and won't idle
Bloody cars.
I love them.

[UrS4boy]

Some Fuel Injector info

Can aan/aby ones be substituted?
Only want them in to shunt the car around while I do other jobs.

20VT injector info:

The NM (2L version of the NA 7A), 7A, 3B(200 20vt, early S2), AAN (UrS4/6) and ABY(later S2),and ADU (RS2) engines all use different injectors. It is common for 3B and AAN and ABY owners to upgrade to RS2 injectors when going above 280 hp. Here is some injector info, including rated flows

Fuel Injector Info:

http://forums.quattroworld.com/s4s6/msgs/20441.phtml

NM (2L version of the 7A): Audi PN 034133551E (Euro only)
7A: Audi PN 054133551A

3B: Audi PN 034 906 031, Bosch PN: 0 280 150 737 (3B uses a 3.0 Bar Fuel pressure regulator, FPR*)

AAN and ABY: Audi PN 034 906 031 B, Bosch PN: 0 280 150 951, flow:
280 cc/ min @ 3.0 bar (= about 26.7 lb/hr at SG = 0.72)
315 cc/ min @ 3.8 bar
323 cc/ min @ 4.0 bar (AAN and ABY use a 4.0 Bar FPR*)
361 cc/ min @ 5.0 bar

ADU: Audi PN 034 906 031 F, Bosch PN: 0 280 150 984, flow:
360 cc/ min @ 3.0 bar (= about 34.3 lb/hr at SG = 0.72)
405 cc/ min @ 3.8 bar (ADU uses a 3.8 Bar FPR*)
416 cc/ min @ 4.0 bar
465 cc/ min @ 5.0 bar

* FPR = fuel pressure regulator = http://forums.quattroworld.com/s4s6/msgs/21108.phtml

[bluequattro]

Thanks Dave!