check the injectors
i had the same problem
i changed high presure fuel pump , still nothing, when i changed the injectors i was very happy:cheese:

 

Check the shut down valve on throttlebody so it isn't stuck. Had that problem also on my JTD. It was sometimes hard to start to finally not start at all.

Good to hear that you don't have the same fault that I had with my old engine.

 

where is that valve,how is it look like..?where is correct position off it..?the alfa was just turned off in driving,there's some suspicious sound like valve on head..but i think there's been problem on the ''timing t.e.''(that sound)....

 

Had the same symptom and detected two problems.

The first one was a fried relay (the one that controls the low pressure fuel pump in the tank). You have to check if there is pressure in the common rail first.

The second one turned out to be a defective fuse (not burnt out) of the immobiliser. One pin of the fuse was shifting inside the plastic body and therefore the contact with the socket was poor. Every sunny day, the high temperature of the cockpit led to deformations of the fuse block, therefore no more contact and the immobilizer did'nt his job.

It took me more than a month to figure it out. In the morning and in the evening everything was fine. At noon i had no more Alfa. I've changed both the sensors (crank and camshaft) also the high pressure valve. Several mechanics including the local Alfa dealer tested the car repeatedly but no errors showed up.

Must add that my Alfa revved but did not start.

 

Hi, can you tell me which the first relais is? Where is it placed? Thanx

 

Having a problem with my 166 3.0 . . . . problems starting from cold, bit once started was ok. Now wont start at all. RAC think it might be the crank sensor, but there is a pulse at the injectors . . . . any ideas what it could be ?
Cheers.

 

Is it still faulty Graham .the Bravo appears fine now..Time will tell.

Pomeo

 

Yes . . .afraid it is . . . . the RAC computer wont connect to the ******, so it's now being towed to a garage . . . .
Cheers.

 

Hi!

The fuel pump relay (J15) is located over the pollen filter:

http://www.img-share.eu/f/images/276/1JNCgOKB.jpg

The fuse (15 Amp) is F3 in the fusebox below the steering wheel.