Camshaft exhaust sensor swap

[audipwr1]

Im having a heck of a time finding the right 5mm hex setup to get it on the bolt and also then be able to turn it to get it off

anyone have a specific setup they used that worked?

already had one hex key head into the pan underneath which has been yet to be found

[Str8f4c3]

I usually use a 5mm hex screwdriver bit adapted to a 1/4" drive ratchet using a 1/4" socket (most screwdriver bits have a 1/4" hex so fits right in). Also worth trying to clean the bolt out first with brake cleaner or something similar to make sure there's no gunk in the cap. Hope this helps!

[Stilt]

Im having a heck of a time finding the right 5mm hex setup to get it on the bolt and also then be able to turn it to get it off

anyone have a specific setup they used that worked?

already had one hex key head into the pan underneath which has been yet to be found

Unless I am confusing the two cam sensors, use this little HF 1/4 with the 5mm (or if it's 4mm, I don't recall) and wear some gloves because the clips on the heat shield for the headers will scratch your hands pretty bad.

Use an extension as well; you need to feel where the bolt is with your hand, and then, using your other hand, you'll take the extension and guide it toward your other hand (that is touching the bolt), then put the extension in the bolt for the cam sensor. With your hand still holding the extension, stand up and straighten your back out since you've been bending over for five minutes 😂. Then, attach the ratchet to the extension. Boom, done !

[kaiv]

1/4" drive flexhead ratchet with a short 5mm allen socket.

[y2k_o__o]

Yea the sensor is really situated in very tight space, you need to use a hex bit ratchet

I had to buy that tool to get that thing out, and I nearly rounded the 5mm hex while doing it and I ended up using T30 to get it out, otherwise it turns to a nightmare

The trick is to make sure your 5mm hex is perfectly deep inside and perpendicular ( I know this is hard at the back of the engine, but you have to be 100% sure they are, otherwise you'll end up like me)

Honestly, I have no idea why BMW decide not to use bolt

[maupineda]

I thought about changing he screw to a bolt, but I am a sucker for specialty fasteners and like torx a lot :P

[audipwr1]

1/4 drive with small 5mm hex is the answer

made it change into a 5 minute job

the hex keys were killing me