Rb25det Neo Engine Tapping?

[Artic Choc]

recently my cars been making a strange tapping sort of sound coming from what i believe to be the injectors or near abouts. it only happens on idle (clutch in or out) seems to only make the noise when warm, and goes away when rev'd or sitting over 1krpm.. it can get rather loud and anoying... sometimes the car sounds like its missing or coughing...

any info would greatly help

CHEERS

[jay-rod]

Idle air conrol valve spazzing out?

[Kinks]

If you've still got the stock ECU then check to make sure the IAC valve isn't physically loose, that could also be doing it.

mine did something similar when I installed an aftermarket ECU and the IAC valve PWM was set too low.. but unless you've got a programmable ECU it won't be that.

[Artic Choc]

Cheers jarod and geoff i appreciate the help, i havnt had the chance to check that but i will as soon as.

Geoff, im running a nistune board would that make any difference?

[Kinks]

no idea whether the nistune does anything different to factory w.r.t the IAC valve. You'd have to ask them.

[Artic Choc]

No worries mate thanks for your help. I have a week coming up soon to pull the iac apart to check it out and see how it goes

[Artic Choc]

Ok so, i found out it also makes the same sound when the car is off/on when i use the hazard lights

[jay-rod]

Dodgy relay?

If you can make the sound when the cars off im sure you can pinpoint where its comming from

[Sinista32]

sounded more mechanical from the vid.

But if it makes that sound when car is off then as above should be able to pin point.

Your first post said at idle. If it was me I'd have checked the PCV

Then I'd check for a solid lifter issue

Edited February 22, 2015 by Sinista32