E34 unable to start up

[crusher]

usually I can start the car on the first turn. About a month ago , there were 3-4 occassions where the engine only started on the 2nd or 3rd attempt. I thought nothing of it as engine seems to run normal. Yesterday I could not start the car at all. Battery is ok. I had the car towed to a workshop nearby my house. Mech said the engine compression gone. He said he will do "manual" compress the engine. Now, i'm a layman in these matters, I had no idea what he was talking about. I observed he removed and replaced some parts. Then tried to start the engine,nothing happened. Then he placed his hand on something and start again. This time there was a bang (explosion?) and some coming out of the engine. He gave me some explanation which being a layman, I could not understand. Car is now still at the workshop. I'm hoping someone can give me some advise. Should I trust him or tow the car to my regular workshop?

 

[affan66]

check the crankshaft position sensor, aka the pulse generator. if it's old, replace it.

pop sound?? hmmm... sounds like a mis-firing engine too.

 

[BLaCkHoWLiNG]

i couldnt start the other day... coz the gear lever is not at P.. kekeke

 

[crusher]

This happened to me once too Took me a while to realize it.
Affan66 , mech confirmed it's the sensor that is faulty

 

[crusher]

Just got a call from the workshop, they found the crankshaft broken. Is it possible it was broken before I sent to the workshop. Because at the workshop there was some kind of bang, and it could be broken then? If so I want the workshop to pay for that part

 

[crusher]

Even after changing the crankshaft sensor, top gasket and cam shaft, car still not starting. Any ideas what could be wrong?

 

[elwine30]

ECU ? starter motor, battery ?

 

[Randy]

I had same problem 2 years ago. Car would not start for no reason. Battery all ok.
Took it to AB and several places could not see any problem as when I am in the workshop, the car will behave and start.

Anyway finally one workshop identified it to be my starter and put an additional relay on it and since hen no problems.

But my problems could not be the same to yours but worth investigating

 

[crusher]

car is running well now, spent some dough but it's worth it