It's kinda hard to diagnose, but maybe you guys can help me narrow it down. A few months ago this noise appeared out of no where. It sounds like a ticking noise. The best way I can explain it is the lobe on the camshaft hitting he rocker. My valves have been adjusted to spec and this noise is only there when I accelerate, gets faster and louder with speed. I have a automatic tranny so when I rev my car in park or reverse it doesn't do the noise. I've even heard it in reverse. I can hear louder when I pass cars that are parked on the street. I jacked up my car and moved the tires and it moves a bit and clunks on both sides, so Idk if it can come from the wheels, and get this, when I'm speeding up I can feel the noise in the gas pedal, like the gas pedal vibrates with the noise, I was thinking maybe I'm hearing the cable flapping? Lol weird huh?

 

could be leak at exhaust manifold gasket .. seafoam and look for white smoke coming out

 

wow, manifold gaskets a good guess but if you're feeling it, then I don't think it that. Having a bad valve tap would just constant noise no feeling. But is everything TORQUED to spec as well.

 

It started to happen even before the first valve adjustment, So I don't think It's the valves, adjusted them last week, still same noise. Interesting when I washed my car the noise takes a while till I hear it.

 

Problem fixed. It was pinging. My timing was way way far advanced. Got a timing light and jumped the service connector and got it where It's good as It's gonna get. Problem is it can be better, but the dizzy can't move anymore. Since it was messed on the other side involving the cams and timing belt I think that's where my problem is. But no more pinging now and she has gained some lost power but not all of it.

 

i have a 95 prelude h23a1 auto tranny and im having the exact same issue right now. every time i drive up a hill or accelerate i can hear a ticking noise that just gets louder and faster from the front left area of my car. i noticed this noise like 3 days ago and i JUST got a new header on last week. i have heard that exhuast manifold leaks can cause a ticking sound, but i seem to hear it most when im driving and almost not at all in neutral or park. any suggestions what i should check first? should i take it to a shop? there's a honda/acura shop right by my house that could probably have a look.

 

Could be the header wasn't torqued down enough. I would also check the ignition timing.

 

could also be the LMA's in the head. typical problem, nothing major to worry about.