Got a cheap dump valve ( eBay special ) 2nd hand so even cheaper, thought I'd have a go, fits fine but doesn't open when lift of the throttle, pulled it apart and nothing wrong with it, am I doing something wrong or is the spring in the valve too strong???

 

They usually turn left/right so you can adjust the spring strength, however they can fail, I had a Turbo Smart Supersonic that failed so no reason why a cheapo eBay one can't.

 

But theres nothing adjustable??

 

Here is my old one before I removed it:



The component in blue rotated clockwise and anti clockwise.

 

if its a cheap bov it will probably do more harm than good pal

sell it on or cut your loss and buy a decent adjustable one

 

I am mate going to stick it back on ebay, was only £20, thought id have a play and annoy the donkey next door with his 1lt fiesta and a drain can hanging out the back of it with the world ****test looking body kit ( bit of a moan there)

 

YEAH!!!!! FAT COLON DO AS HE SAY'S
Or he will throw his bov at you