Whenever I accelerate, I can hear a faint, rapid ticking... It only happens when I'm moving, not parked, and I can only hear it when I drive by something solid like a wall so it's magnified... It's been suggested it's bad gas, but no matter where/what type of gas I get, it ticks. I'm thinking maybe the lifters? How bad/damaging is that, and how easy is it to fix? Any other ideas? I know my IAC valve is going bad/ bad, could that be it?

 

so if you lift your hood while parked and rev the engine, it wont click?

 

what are the symptoms of a bad IAC?

 

Rough idle, shaking, doesn't want to start on cold mornings

 

Nope. I can hear the belts, but it's a different sound.

 

When I start my truck in the morning (cold) I hear a noticable ticking noise. I asked the dealer about it they said to use 5W20 oil from now on. I haven't tried it yet. Next time I change the oil I'll give it a shot.

 

^^ I'll try that soon and update yall

 

it could be pinging, try using a higher grade of fuel the next time you fill up and it will go away..

 

^^ I've used 89, 91, and even 97 and it still clicks.

 

If the tech is suggesting thinner oil, he is probably thinking it is the valves. You're probably not looking to add $$, but one benefit of roller rockers besides extra hp is it makes the engine quieter. The clacking from the stamped rockers vs the rollers is noticeable by everyone who has put them on.

I'm suggesting this since you are in TX and I'd do the install n/c. I need to make a good pictured how-to on this item.

Another thing could be a small exhaust leak at the manifolds.

 

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that's what i was about to say... my sister's '02 V6 stang is ticky sounding though.. but since you've had exaust work done, thats what i'd say

 

could also be the u-joints..

 

i get the same thing although i hear mine by my pedals...if you figure it out let us know, i may try some...

 

I think it's a leak in the exhaust also. I had the problem in my old truck.