stevenh 0 Posted July 23, 2005 Report Share Posted July 23, 2005 I have removed my airbox tonight and fitted a cone air filter I had on my Honda Accord.When sitting with the engine ticking over I heard a rythmic ticking coming from a little black cylinder about the size of a matchbox that has an electrical connection, as well as rubber tubes - one goes to a reservoir type thing behind the offside headlight (set into the inner wing) the other side goes up to the PCV valve.It ran for a minute or two then stopped.Can anyone advise what this is please? And should I be worried about this ticking/throbbing noise?Also, how have you guys fitted cold air feeds as I have ducting but it's as tight as a gnat's chuff around there and I can't see a good route to install one down to behind a grille. Link to post Share on other sites
mightyvr6 0 Posted July 23, 2005 Report Share Posted July 23, 2005 Sounds like the noise is from the check valve between the pcv and carbon canister. I'm pretty sure it's supposed to pulse to allow excess fuel vapour to flow into the inlet manifold. Basically it's (carbon canister/valve) to do with emissions. You can remove the carbon canister to make a cold air feed or possibly install the ducting next to the radiator. Link to post Share on other sites
SHARKY 0 Posted July 23, 2005 Report Share Posted July 23, 2005 Hi....I think what you're describing is the EVAP purge regulator valve (quoted from the Bentley Manual). Its nothing to worry about - it's working.....It vents vapour from the fuel tank to the charcoal cannister, which is then vented into the intake manifold - I think!!! %-6 Mine makes ticking noise when operating, which I'd never heard until about a week ago, I thought something had gone wrong, but I tracked it down to that and asked my local mechanic, he explained it to me. It's wierd when you first hear it.Hope that explains what it is and its use.As for the cold air feed, I've got a Pipercross cone at the moment, and when I took my airbox out I had an air feed which curves from the inner wing. I have Bonrath lower bumper air vents and have a cold air feed pipe from that through the inner wing instead of the plastic curved pipe. You could just push it through the inner wing and leave it hanging down inside the inner wing, or fasten it to the cannister. You're right it is tight in there but just take a little time and figure out the best path for you.... Perhaps some of the guys which have a BMC CDA filter will better describe the best route..... I'll leave it to them.... Hope this has helped mate.... Link to post Share on other sites
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