Alfa Pages

[jimshady]

I was just looking in the 33info section under the injection sub menu, I was looking for info on the weber IAW setup and found the link does not work, is this info located elswhere on the site by any chance?

[Joelomint]

Lots of manuals, including the IAW one you're after here:

http://alfaromeo33.extra.hu/

[jimshady]

Many thanks, I shall have a gander

[Guest]

ZP's site on the 33 Imola has some info on that injection system. It's in french mind.

http://alfaimola.free.fr/technique/injection/index.html

A similar system was used in the Alfa 145/6 1.3 boxer.

[eagle3]

[jimshady]

Noworries man, the first link is in Hungarian! I have a mate who's French so he may have a bash at translating for me...

[eagle3]

Lots of useful info to be had there anyway. http://alfaimola.free.fr/

Sounds like the original engine's OK - just needs fettling.

You may need some cash for a new catalytic converter unless it's registered before the new EEC pollution regs came in(jan 1994 I believe) - in which case you might get away without it.
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Alfa33 QO 1984
Alfa33 1.3i.e. 1994

[jimshady]

Ooh, mine is a '94 reg! CAT it is then. Yeah the engine is fine, the poor running is down to the petrol tank outlet I think as mentioned in another thread I have a noisy pump, new one fitted with no change. So tank off when I get back from me hols!

[Guest]

[Admin]

[jimshady]

Right so, its not worth me modifying my engine in anyway as it must have a cat and with the Irish system a declared modified car is going to be too much for me to run so I'm going to keep her original.

Engine wise I changed the fuel filter on the bulhead and the differenc was massive. There is still a little hesitancy at low revs but overall, throught the rev range I still feel like she's down on power, even though delivery through the range is now alot smoother.

I wanted to check the pressure on the fuel rail, what should it be?

My lambda is tested and working, I have no vacuum leaks.

I can smell the engine is running way too rich from the exhaust so next on the list is to check the timing and the regulator fffor the return feed back to the tank.

after that I'm thinking gunked injectors, any tips on removal if this is the case?

sorry for the barage of questions but I'm time starved both with time on the computer and time in the garage!
EDIT
OOH sorry this is in the wrong section, could the mods move it maybe?

[eagle3]

If running too rich and Lambda sensor is ok check coolant temperature sensor which goes to calculator. It could be showing cold instead of hot.

Injectors fairly easy to remove. Ultrasonic cleaning does help I think.

Fuel pressure should be 2.5 bar +/- 0.2 bar after regulator.
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Alfa33 QO 1984
Alfa33 1.3i.e. 1994

[jimshady]

Coolant temperature is fine, gauge reads as it should, fan cuts in and out etc. I'll rig up a gauge to test the fuel pressure this weekend hopefully.
Re the injectors, do they screw out? I don't see anything I can get a spanner on to.
Thanks a million for the advice mate

[Admin]

Hi

There is more than one temp sensor! The one for the temp gauge isn't connected to the fuel injection, and the fan just operates off a switch sensor on the radiator.

There is also an intake air temp sensor built into the air flow meter (well, on those with an AFM).

All the best

Keith
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I owe, I owe, its off to work we go.
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[eagle3]

Injectors are push-fit with O rings http://alfaimola.free.fr/technique/carburant/injecteurs/index.html

As Keith says there are two coolant sensors on the bloc; one for the gauge(on all models) and one for the calculator.

Air temperature sensor after the air filter but no air flow meter though. There's an air pressure sensor at the intake manifold http://alfaimola.free.fr/technique/injection/depression/index.html
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Alfa33 QO 1984
Alfa33 1.3i.e. 1994