[ricky_bobby00]

I bought the Airaid CAI kit for my 2013 se sedan focus. After about 5 months of having the CAI running in my car, the engine starts to make a "ticking" noise when idling and after the engine is warm. Anyone have any info on this what I can do to fix it?

 

[Jburks]

well these are direct injected engines so you are going to hear a lot of ticking.

 

[Frenchie_14]

I heard what sounded like lifter or HLA ticking from mine the other day. it started on a cold-ish engine and went away as it warmed up. I gotta look into how the valve train it set up on these motors, but maybe they're inherently noisy?

There's a fair amount of injector tick on these, but As stated before, it's normal on a DI engine.

 

[ricky_bobby00]

Well it never did it before I put in the CAI. It ticks loud for a couple minutes, stops, ticks loud again and keeps on that cycle.

 

[ricky_bobby00]

Could the engines computer be misreading the air flow from the cold air intake? Maybe the it needs a tune for the air intake?

 

[Frenchie_14]

Could the engines computer be misreading the air flow from the cold air intake? Maybe the it needs a tune for the air intake?

Not likely. Unless you've created a leak AFTER the MAF sensor, the cai isn't causing a false reading. You might also be hearing the evap purge solenoid doing its thing.

 

[Tigeo]

Could be the evap purge valve...search it here for info...several threads on it recently. Just under the HPFP.

 

[c5karl]

Could be the evap purge valve...search it here for info...several threads on it recently. Just under the HPFP.

That's what the noise was on my car. Here are a couple of threads about it.

http://www.focusfanatics.com/forum/mk3-focus/482577-very-annoying-ticking-sound-just-developed.html

http://www.focusfanatics.com/forum/mk3-focus/539274-2013-focus-emissions-purge-valve-location.html