XRSIK

ive noticed a lot of people posting about a mystery rattle in their cars - well heres my experience...

came out of work and noticed a loud tapping noise coming from engine. Pulled over popped the hood and listened - very loud tapping noise from left side of engine - sounded like tappett noise (thought either no oil or a thrown valve). Not wanting to take any chances i drove straight to Ford in Penrith and got a mechanic to check it out.

Verdict - the noise is a rattling PURGE CONTROL VALVE - and he has ordered a new purge control solenoid - he also said three other BAs have been in this week to fix this problem.

Hope this helps anyone with this noise!

ps wtf does a purge control valve do?

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2003 BA XR6, T5, Blueprint. Herrods exhaust, unifilter ,painted calipers.
0-100 in 6.55 secs.
Forever to live in the shadow of its big brother!
Also - Kawasaki ZZR, soon to be Kawasaki ZX6R.

plee

Well the rattle we had in our XR6 was a faulty engine mount, which has now been replaced, and is fine. Was never a loud tapping noise, rather a creaking noise.

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April 03 Narooma Blue BA N/A XR6 - 5 Speed, Tint, Alarm, XR Mats and Scuff Plates, Slimline Windowshields.

russellw

The Purge Control Valve is a part of the evaporative emissions system of most modern vehicles.
In simple terms there is a thing called a carbon canister that collects excess fuel vapours (and in some instances crank-case vapours as well)
and feeds them via the purge control valve back into the engine inlet manifold.

The aim is to have a fully sealed fuel system where excess vapours are fed to the carbon canister and then reused when there is a high vacuum in the inlet manifold.

Simple explanation but I hope it helps.

Russ

JR

SO would this cause a sound like a tappet rattle? My car has sounded like it's got a slight tappet rattle since the last oil change at 15000kms, and I was watch when the oil was poured in, saw the rating and the amount used, so i know their both correct.

It's not a major noise in any way, just that slight tappet like sound when the car is under light load.

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