I did a search and read through some of the posts, but my "tick" is a bit different. No abnormal tick at idle. The only time I really hear the ticking is when I get on it pretty good. As soon as I let off it goes away.

No lack of power.

Any suggestions?

Ryan

 

That's frequently one noisy injector. The Injector Control Pressure is elevated when you check the temperature of the firewall with your foot, and the injector can protest aloud with a foot up its butt.

 

Is that #8 Injector clicking because it's not getting all the fuel it thinks it needs?

Is there a fix?

Ryan

 

Sometimes they just get noisy as they age. You can play with the Hutch mod to make sure there's no air in your fuel, you can check the injector hold-down bolt torque or maybe replace the O-rings, you can install a fuel return on the heads, try different oil (I use synthetic) - or just replace the injector. I have learned the injectors are pretty much the noisiest thing under the hood on these trucks, unless you get them under control.

How much do you want to spend to silence a stick?

 

Exhaust manifold leak at one exhaust port.

 

To Cody-Wan you listen, yes.

 

Cleatus12r: I've always wondered with an exhaust manifold leak (my wife's Dakota has one now, my previous 1993 Bronco had one) if it was the exhaust valve itself opening and closing which makes the ticking sound and we are just hearing it through the warp or other gap in the manifold?

Or is it the exhaust gasses being expelled out the manifold gap which makes that ticking sound?

Also, is it true if you don't fix the leak it will burn out that exhaust valve?

What do you think?

 

I second the possible exhaust leak. It could be coming from manifold to head, sneaking out around the awesome seal of the uppies. I don't believe it would hurt a valve unless really bad. Never quite understood the dynamics on how it would burn a valve, but have heard that from way back.

 

I'm with Cody. I had egt probe issues and lost one creating an exhaust leak. It wasn't your traditional gasser exhaust leak. It was a tick as you describe only auditable under load.

 

A small leak is a high-speed "pft", and the "tick" is how our ears interpret it.

 

I just checked this thread......guess I didn't get any notifications of replys.

So the click/tick/pft is pretty loud on acceleration. I'd like it if it were a exhaust leak.

I have a video I'll post up later.

Ryan

 

I believe we are all agree it's an exhaust leak. Now it's up to you to find it and let us know where it happens to be....

 

The nice thing about an exhaust leak is it always marks territory. Soot accompanies exhaust leaks, and there should never be any soot anywhere other than out the tail pipe.

 

Hey Ryan:

Your symptoms are different than my wife's Dodge where the ticking is most pronounced when the engine is cold and at idle and quiets down when warmer and while driving at higher rpm. (I have read that higher rpm actually reduces exhaust back pressure so quieter ticking results. I have also read that when the engine is under a load, the ticking get louder. So, go figure...) Here is a quotes from a thread I found which seemed helpful to me:

"The easiest way that I've found to isolate an exhaust leak it to have about a 2-foot long piece of 3/8" hose. Stick one end in your ear and trace the other end around
the exhaust ports and flanges. If there's a leak, you'll be able to hear it very clearly. This way you won't burn your fingers either."

 

I'll check for a leak tonight.

So I'm going to add a curve ball to the symptoms......probably should have mentioned it before. If I don't start it for a couple days then most times it has what feels like a miss and extreme loss of power. Sometimes it goes away after I give it a little throttle and get going down the road. The miss just goes away suddenly and it'll run smooth. If I let it sit for a few days in the cold it'll go away after a mile or two down the road.