Join Date: Feb 2007
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Drain pipe location
There must be a reason for the manufacturer fitting the cap in the first place - believe me they will not fit unnecessary components (anything to reduce cost). The end cover on the pipe serves two purposes. Firstly it acts as a one way valve - it allows water out but stops water and crud getting into that end of the pipe Secondly an open pipe subjected to the wind will make a distinct whistling sound - would give a boost to those who fit wheel bearngs.
I just happened to notice lumps of crud lying at the bottom front of the sill (in the photo) - did they fall out of the pipe or are they migrating up towards the now unprotected pipe. It it was mine I would clean out the cap and replace - it would less hassle next time round. Very well done for tracking down the prob - no doubt it will be a great help to other forum members.
Currently in madnoel10's garage:
Honda Civic 1.4l