Engine won't turn over, VANOS stuck?

[gotKRAUT]

sure its nothing to do with the cam install?

[Jason89i]

do you have aftermarket cams? the schrick cams (and of course sunbelts) should be dialed in after install. installing them "straight up" with the cam block per bentley can cause piston/valve contact. cheers, jason

[Bmjpv]

The cam installation looks and can be easy to setup ,but misalignment can be made. If you have done a fair amount of these setups it's easy. But the first time or two misalignments can be made.Back to basics, TDC and recheck! Jason can you expand on the diaing in of aftermarket cams and the plus that we all might get by doing so. thanks joe

[aeryk7]

The engine would start whether the VANOS was stuck timed wrong , not plugged in, whatever. If your engine only turns by hand 20 degrees then your flywheel is touching the bell housing , the engine is timed wrong and the valves are touching the pistons or something like this. Vanos is actuated by oil pressure up into the rpm range your car is obviously not starting so you wouldnt even know if your VANOS is stuck.

[Mr.SWISS]

If it is in gear I am going to lmao rofl.

[Bmjpv]

Just so everyone is clear how this VANOS works,It's electicly engadged by the solenoid, oil pressure is to the VANOS is constant .ECU programing signals power to the VANOS solenoid at preprogramed RPM ,adusting timing and away you go. joe

[matt]

Just so everyone is clear how this VANOS works,It's electiclly by the solenoid, oil pressure is to the VANOS is constant .ECU programing signals power to the VANOS solenoid at preprogramed RPM ,adusting timing and away you go. joe

Vanos activation depends on RPM, load (TPS, MAF), coolant temp... there are a lot of factors. The Vanos solenoid controls a two way valve so that if it's powered, the plunger is being held in the advanced position and if it isn't, the pressure is holding it in the retarded position.

I really cannot see any way a vanos could possibly lock up a motor.

[Jason89i]

The cam installation looks and can be easy to setup ,but misalignment can be made. ......Jason can you expand on the diaing in of aftermarket cams and the plus that we all might get by doing so. thanks joe

post from last year. http://forums.bimmerforums.com/forum...hlight=schrick

jason

[triggrhaapi]

I have taken everything timing related off, VANOS unit, tensioners, gears, you name it. It's 100% guaranteed not related to anything in the engine itself. I removed the spark plugs to see where the pistons were in relation to the valves, no chance of contact whatsoever.

I'm thinking that it's either that my starter is broken and jammed or something else is somehow jamming the flywheel preventing it from moving.

[Jason89i]

I have taken everything timing related off, VANOS unit, tensioners, gears, you name it. ........

just a side note.....i know you already know this but.....Do not try to spin the crank by hand without the timing chain hooked up with the cams. if cams dont move, then piston will contact open valve. cheers, jason

[Bmjpv]

Now I'm really interested in this, at this point I'd lift the cams out (valves will close ) and roll the engine over by hand. The chains won't matter at this point. Keep us informed. good luck joe

[matt]

Now I'm really interested in this, at this point I'd lift the cams out (valves will close ) and roll the engine over by hand. The chains won't matter at this point. Keep us informed. good luck joe

+1

If you can take the cams out and the crank spins, you timed the cams wrong.

[Lobstrosity]

Did you remove the a/c pulley from the engine? I did this, and but then the bolts were too long for just the crank pulley/harmonic balancer, and it would only rotate a little ways before getting jammed into the block.

[matt]

Did you remove the a/c pulley from the engine? I did this, and but then the bolts were too long for just the crank pulley/harmonic balancer, and it would only rotate a little ways before getting jammed into the block.

Ohhh... thats a good one too. Had the same thing happen but I caught it while it was still on a stand.

[triggrhaapi]

Did you remove the a/c pulley from the engine? I did this, and but then the bolts were too long for just the crank pulley/harmonic balancer, and it would only rotate a little ways before getting jammed into the block.

Hmm that very well may be it then. I did remove the A/C pulley... I bet that's it.