Car was ok with HKS 272 but started to tick on acceleration. Switched to FP4 cams. Sounds like putting a baseball card in a bike wheel. It slowly subsides after being warm but still a subtle fluter noise. Had the car redyno and everything seems fine. I do have an exhaust leak from the bottom of the turbo to the downpipe but the tick is very distinct. It's not a flutter but a slight light tapping. Replaced stock lifter with jackson lifters, new retainers, springs. Still ticking on acceleration. At idle it sounds fine. Please help.

Matthew

 

were the jam lifters bled (they should be soft and you should be able to compress them between your fingertips) on installation? mine were extremely loud on initial start up until they pumped back up with oil

 

possibly injectors?

 

I've got a similar ticking and believe its my exhaust manifold gasket.

 

A bearing out on a balance shaft will make a noise like that.

 

^no balance shaft FTW

 

Sounds like exhaust to me.

 

Leaky exhaust gasket. I've heard the same problem on my buddies boosted K-series honda. We checked everything in the valvetrain since we assumed that's were it came from, and lo and behold, it was a leaky exhaust gasket between the testpipe and the headers

 

Oil lifters IMO. You change the weight of your oil?

 

i think every evo i have been in or seen tics in idle...

 

I have a similar ticking.. I just figured it's the gasket or cams.. *shrug* No harm no foul?

 

I noticed EXACTLY this sound just after picking up my brand new 2010 EVO X, with 50.1 on the odometer. I have it booked into the dealer week after next to check it out. There is no noise at a standstill when I rev it, only when on the road. Off the throttle, no noise. On the throttle, even lightly, I get the card in the spokes noise.

 

MINE WAS THE EXHAUST MANIFOLD GASKET. opps didnt know the caps were on

 

I have the same "tic" and it really doesn't bother me as it isn't that loud. I've replaced/upgraded everything so just chalking it up to a "minor" leak like everyone else is getting

 

Thats called he 4G63 tick ........ the 4B11 has a slight tick at idle too .