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DISCUSSION => General Topics => Topic started by: oldtimer on March 05, 2008, 06:01:40 AM

Title: Vacuum lines
Post by: oldtimer on March 05, 2008, 06:01:40 AM

I know this was discuss some time ago.  has anyone modified the vacuum lines under the intake: one re-routing them for easy access, two replaced them so to eliminate all the couplings tha promote air leak.  Also, I re-call that someone installed some kind of re-covery system and filteration on the valve cover tube.  Who ever done this mod.  I would to do something with mine while I have the intake out.  My erratic idle has lead me to investigate the posibility of vacuum leak coming from that area.

Title: Vacuum lines
Post by: D. Clay on March 05, 2008, 07:32:06 AM

http://m42club.com/forums/showthread.php?t=3621
I have since used short sections of heavier hose for the water line cut offs. I cut most of the threads off two bolts a little longer than the hose clamp width. The caps from the "Help" rack at Autozone were a bit thin. After eliminating the water lines and throttle body heater, there are only two lines remaining. The crankcase vent from the valve cover and the ICV circuit. I still have the vacuum line to the fuel pressure valve on the injector rail and and the line to the charcoal cannister.

Title: Vacuum lines
Post by: oldtimer on March 06, 2008, 06:11:57 AM

Thanks for the input.  I plan on tackling this on this week end and hopefully it will help with the my erratic idle I am dealing with.