Death of a hose

A friendly place to discuss whatever!
Post Reply
User avatar
jeyjey
Posts: 54
Joined: Sat Apr 25, 2026 7:28 pm
Has thanked: 18 times
Been thanked: 22 times
Right when my 944 was half-apart on the lift for some new front suspension rubber, my E36 M3 decides to develop an unstable idle and stalling when warm.

I finally got the Porsche buttoned back together and the M3 onto the lift. Re-gapped the plugs (they were 0.25" when they should have been 0.30"), to no avail.

Got out the smoke machine. Found this gaping hole in the elbow that goes from the cylinder head to the AOS:
AOS vent hose.jpg
AOS vent hose.jpg (99.29 KiB) Viewed 207 times

Blimey. That's not your normal crack.

Picture taken with a borescope, because, you know, it has to be in a place that's nearly impossible to get to.... :?

#1

Top
User avatar
jeyjey
Posts: 54
Joined: Sat Apr 25, 2026 7:28 pm
Has thanked: 18 times
Been thanked: 22 times
About 3 hours to get the intake stripped off for access. (OK, 45 minutes of that was hunting for a screw that I dropped.)
intake_off.jpg
intake_off.jpg (366.56 KiB) Viewed 195 times

#2

Top
User avatar
Tom
Site Admin
Posts: 8923
Joined: Fri Jun 25, 2021 2:04 pm
Location: Silicon Valley, CA
Has thanked: 932 times
Been thanked: 3991 times
Contact:
Contact Tom
Something about BMW motors from that era that just look great! Sorry about the hose but think of all the ‘while you’re in there’ parts you can refresh :)

#3

Top
User avatar
jeyjey
Posts: 54
Joined: Sat Apr 25, 2026 7:28 pm
Has thanked: 18 times
Been thanked: 22 times
Yeah, it's a pity they jumped on the plastic covers bandwagon shortly after that....

#4

Top
Post Reply