Fresh m42 top end rebuild

[Bmr]

Is it normal for the car to run a rough for a few days after changing the top end and timing components? The damn thing idles low when starting then smooths out after a few minutes. It drives great except low speeds, then it kinda jerks and sometimes dies. I'm going to jump in tonight and tear apart and check everything under the manifold and take upper manifold off. Also i put in 10-40 since i don't leak everywhere and the oil light randomly comes on for a few then off, I'm wondering if i got coolant on the oil pressure connector? It's throwing the 1215 code right now, afm and intake leak. Well I'm 99% positive there isn't one. So i probably got something on the afm connector or plug. any input would be great.

Thanks!

[bmwm42]

Did you prime the pump

[Bmr]

Dang it. Haha

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[E30ruben]

Check your coolant and oil connectors

[Dj Buttchug]

prime what pump? you shouldnt have to prime the oil pump unless you tore the engine completely down.

[Bmr]

Oh I thought he said something else

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[Bmr]

So going of the electrical manual I'm having a hard time figuring out color code for those 3 sensors. Oil is black, plug on the front top side of block is blue and rear is orange.

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[Bmr]

These don't line up. Off by like 3° both sides.

Chain is 7 links between arrows. But cams are not center on bolts. I think I can adjust them a little.

TDC is locked in. Ignore oil, I had taken the filter cover off to check if i had a xtra O ring. Any input would be great.

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[irish44j]

The top lobes of the cam blocks there should be perfectly level across (use a straight edge). If they're not, use an adjustable wrench to rotate one of them to make them level (with the cam sprocket bolts loosened). Once you lock them in position perfectly level, re-tighten the cam sprocket bolts.

[Bmr]

Best way to lock in with out BMW tool?

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[irish44j]

my method: 2 adjustable wrenches, one on each. align them to where they should be, then use a vise-grip to hold the handles, which should be criss-crossed. Mine has been sitting on the bench like this for 2 months and hasn't moved :)

I can't really find a pic right now, but will post you one up tomorrow if you don't see what I'm saying.

[Bmr]

my method: 2 adjustable wrenches, one on each. align them to where they should be, then use a vise-grip to hold the handles, which should be criss-crossed. Mine has been sitting on the bench like this for 2 months and hasn't moved :)

I can't really find a pic right now, but will post you one up tomorrow if you don't see what I'm saying.

I just used 2 28mm wrenches and ziptied together. Lined up great.

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[bmwm42]

is it me or is your timing of by a tooth? reference this guidehttp://www.esatclear.ie/~bpurcell/318istimingchain.html

[Bmr]

is it me or is your timing of by a tooth? reference this guidehttp://www.esatclear.ie/~bpurcell/318istimingchain.html

Those pictures look like 7 teeth in between. His gears have a arrow on the outside I see.

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[Bmr]

So i moved the exhaust gear back one tooth and now it sits flush with intake and lined up in the middle. Also i see a lot of write ups where the timing tensioner is compressed. Why is that when you can push in with oil uncompressed and not risk jumping a tooth.