E30 Zone

Hi all. I'm after some help. I'm trying to get a 1985 523i started which has been in a garage for 16yrs. I have replaced the spark plugs, and there is a good spark, had all the injectors out and they all seem to operate as they should with fuel spurting out nicely. However, when you put it all back together the thing won't start. It seems to fire on one cylinder (blackened spark plug contacts) but that is all.

I have put oil into the cylinders to try and lubricate the cylinders to increase the compression.

I have looked at all the hoses and they are in good condition with no noticeable cracks.

I have read about the crank position sensor and the ECU but if there is a good spark I assumed the ECU is ok.

Can anyone make any suggestions as what to look at next?

Thanks

The cam belt is on my list of things to do. I know there is a risk which will hopefully not become a reality!! The car is immaculate. It has just been sat there since the owner died 16yrs ago and has only done 12,500miles . So I imagine the timing is ok.

I have had the spark plugs all out and connected and they all spark so I assumed that the cap/rotor/leads were ok.

I had all the injectors out and connected and they were pushing out fuel. I refitted them and when i took the spark plugs out again they were damp with fuel.

I replaced the fuel pump as well which had seized up

I was doing a bit more reading tonight and read about the idle control valve. Something else for me to check!

You might have gathered that I am relatively mechanically savy but I know nothing about BMWs