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Old 03-04-2007, 08:24 PM   #1
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Exclamation triton V8 troubles

Hey, I have a 98 F-150 with a 5.4. L V8, and it makes this ticking noise when my rpms rise. It quites down when it changes gears and the rpms drop, but as I put my foot into it it gets louder and faster up to when it shifts, then it goes soft again untill the rpms rise towards the next gear. When I idle the sound is soft and fairly quiet. I have put around 1000 miles on since I got the truck and it has made this sound since I have owned it. Under the hood with a stethiscope the noise seemed to be coming from the drivers side of the engine back towards the firewall. I have pulled all the plug wires one at a time trying to narrow down a cylinder but the noise stays even throught that process. I am real confused because the truck still runs great aside from this obnoxious noise, something is not ok. I am wondering if anyone has any similar symptoms or some clue as to what this could be. Thank you
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Old 03-04-2007, 08:26 PM   #2
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exhaust leak or something with the timing chain? (I belive it uses a chain, not a belt right?)
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Old 03-04-2007, 08:26 PM   #3
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Im would check the tranny and the clutch... both very expensive.

hope this helps.
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Old 03-04-2007, 08:43 PM   #4
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This problem is definetly in the engine, I have a hunch that its a broken valve spring. My exhaust is ok, I just had a flow master exhaust put on. The truck has 120,000 miles on it and I bought it knowing it had this noise, (who can pass it up for $3000 dollars. It was a repo vehicle) I have put a lot of work into fixing it up, and now my last part is this noise. I am just curious to know if this is a freak problem or if my symptoms are notorious for this model. Its not an easy engine to work on, so I seek knowledge. Thanks
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Old 03-04-2007, 08:48 PM   #5
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no, a exhaust leak at the back of the exhaust manifold, your new exhaust system only goeg from the cat back.
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Old 03-04-2007, 09:01 PM   #6
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When you pulled the plug wires did you check the torque on the plugs. Just a thought, you have the engine that likes to spit out the plugs. Everyone that has had it happen has said it made a ticking sound before dislodging the plug. Like Pro-x-144 said you should also check the exhaust manifolds and make sure you don't have a leak. btw, welcome to the site
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Old 03-04-2007, 09:09 PM   #7
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Originally Posted by whitecrystal1 View Post
When you pulled the plug wires did you check the torque on the plugs. Just a thought, you have the engine that likes to spit out the plugs. Everyone that has had it happen has said it made a ticking sound before dislodging the plug. Like Pro-x-144 said you should also check the exhaust manifolds and make sure you don't have a leak. btw, welcome to the site
I thought that was the 4.6?
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Old 03-04-2007, 09:10 PM   #8
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Both do but the 5.4 is worse about it. http://www.topix.net/forum/autos/for...HFU0VD0N2U9KPD
http://www.consumeraffairs.com/news0...ark_plugs.html
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Old 03-05-2007, 03:22 AM   #9
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I knew of that plug blowing problem I just never heard that symptom of the ticking before. I read about 200 of those threads and that seems to be the same noise I hear. Thanks so much, very helpful. Now I have to look forward to that tomorrow.
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Old 03-05-2007, 04:59 PM   #10
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Don't rule out a leaky exhaust either. You could have a loose manifold.
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