Weird engine noise
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Laughing Gas
Joined: Oct 2012
Posts: 1,219
Likes: 5
Weird engine noise
Searched and can't find anything like what I hear out of my V10. After I start the truck, say 10 seconds later, I get an inconsistent clunk type noise that I can't nail down. It like a clunk that flutters if that makes any sense. Truck has 125k on it. I've had it since 113k and noise has always been there. Im concerned as I'm soon going to be towing a travel trailer.
Also this passed week I started the truck and got a ticking noise almost like a lifter noise that would come and go. I tried changing the oil and substituting one quart of MMO. Ticking started after that. So I drained that out and put in 6.5 quarts of valvoline 10w30. Truck still runs fine down the road and I just completed a 300 mile round trip with no issues. But as soon as truck goes into park that clunky flutter noise is there.
Any ideas? I'm stumped. Please help.
Also this passed week I started the truck and got a ticking noise almost like a lifter noise that would come and go. I tried changing the oil and substituting one quart of MMO. Ticking started after that. So I drained that out and put in 6.5 quarts of valvoline 10w30. Truck still runs fine down the road and I just completed a 300 mile round trip with no issues. But as soon as truck goes into park that clunky flutter noise is there.
Any ideas? I'm stumped. Please help.
More Turbo
Joined: Dec 2012
Posts: 719
Likes: 4
From: WisCONsin
Mine does that too, as soon as there is a little throttle IE: some RPM it goes away type thing, you crawl under the thing and can hear it but with a little throttle it goes away.
Pretty sure that it's some piston slap
Drive yours I'll drive mine when something lets go at 300k we can figure it out!
Pretty sure that it's some piston slap
Drive yours I'll drive mine when something lets go at 300k we can figure it out!
Post Fiend
Joined: Mar 2009
Posts: 11,798
Likes: 14
From: Mt. Shasta California
Searched and can't find anything like what I hear out of my V10. After I start the truck, say 10 seconds later, I get an inconsistent clunk type noise that I can't nail down. It like a clunk that flutters if that makes any sense. Truck has 125k on it. I've had it since 113k and noise has always been there. Im concerned as I'm soon going to be towing a travel trailer.
Also this passed week I started the truck and got a ticking noise almost like a lifter noise that would come and go. I tried changing the oil and substituting one quart of MMO. Ticking started after that. So I drained that out and put in 6.5 quarts of valvoline 10w30. Truck still runs fine down the road and I just completed a 300 mile round trip with no issues. But as soon as truck goes into park that clunky flutter noise is there.
Any ideas? I'm stumped. Please help.
Also this passed week I started the truck and got a ticking noise almost like a lifter noise that would come and go. I tried changing the oil and substituting one quart of MMO. Ticking started after that. So I drained that out and put in 6.5 quarts of valvoline 10w30. Truck still runs fine down the road and I just completed a 300 mile round trip with no issues. But as soon as truck goes into park that clunky flutter noise is there.
Any ideas? I'm stumped. Please help.
Super Moderator
Joined: Aug 2003
Posts: 25,479
Likes: 742
From: Isanti, MN
These engines are designed and clearanced for much thinner 5w20 oil. I've read in the past that some 90% of engine wear occurs during cold starts. Thicker oil takes longer to build pressure at the heads, and therefore maximizes the time that the engine spends running without oil pressure. I don't think you'll cause damage that fast with thicker oil, but it's certainly not helping you any.
I'd drain and fill with the correct weight 5w20 oil. You'd build oil pressure sooner, and that may be the cause of your noise.
Thread Starter
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Laughing Gas
Joined: Oct 2012
Posts: 1,219
Likes: 5
Noise was happening long before 10w30. I went up to 10w30 because it was using too much oil with 5w20 syn and 5w20 blend. It didnt smoke and no oil in coolant so i assume it was slipping passed the rings. Also no leaks.
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Post Fiend
Joined: Mar 2009
Posts: 11,798
Likes: 14
From: Mt. Shasta California
Just one. You're using the wrong oil!
These engines are designed and clearanced for much thinner 5w20 oil. I've read in the past that some 90% of engine wear occurs during cold starts. Thicker oil takes longer to build pressure at the heads, and therefore maximizes the time that the engine spends running without oil pressure. I don't think you'll cause damage that fast with thicker oil, but it's certainly not helping you any.
I'd drain and fill with the correct weight 5w20 oil. You'd build oil pressure sooner, and that may be the cause of your noise.
These engines are designed and clearanced for much thinner 5w20 oil. I've read in the past that some 90% of engine wear occurs during cold starts. Thicker oil takes longer to build pressure at the heads, and therefore maximizes the time that the engine spends running without oil pressure. I don't think you'll cause damage that fast with thicker oil, but it's certainly not helping you any.
I'd drain and fill with the correct weight 5w20 oil. You'd build oil pressure sooner, and that may be the cause of your noise.
Owners manual 2000 Ex, page 201, 5w30 oil.
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Post Fiend
Joined: Mar 2009
Posts: 11,798
Likes: 14
From: Mt. Shasta California
It's just the synth oil that disappears faster, nothing to do with the rings. Mine has 170k miles and burns almost no oil. I never use synth.
Logistics Pro
Joined: Jan 2011
Posts: 4,888
Likes: 3,435
From: Ohio
I'll throw out some guesses from a vague description and thousands of miles away. 
Does it only tick on a cold startup and then go away fairly quickly? Check for broken exhaust studs.
The clunking I get the impression happens all the time, but only in park? Might be loose bolts on the flywheel or even loose bolts on the cover over the converter. Could also be a loose heat shield on the exhaust.
In 2000, the spec was 5w30 and it was sometime later that ford came out with 5w20 as the "right" oil. Tells me that either should be fine. Since I can't bring myself to use the 5w20 water, I justify using 5w30 just by looking at the oil fill cap that says 5w30 on mine.
That said, the 10w30 oil could cause some cold start noises, but if it just started doing it my money is on broken studs.
Does it only tick on a cold startup and then go away fairly quickly? Check for broken exhaust studs.
The clunking I get the impression happens all the time, but only in park? Might be loose bolts on the flywheel or even loose bolts on the cover over the converter. Could also be a loose heat shield on the exhaust.
In 2000, the spec was 5w30 and it was sometime later that ford came out with 5w20 as the "right" oil. Tells me that either should be fine. Since I can't bring myself to use the 5w20 water, I justify using 5w30 just by looking at the oil fill cap that says 5w30 on mine.
That said, the 10w30 oil could cause some cold start noises, but if it just started doing it my money is on broken studs.
Thread Starter
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Laughing Gas
Joined: Oct 2012
Posts: 1,219
Likes: 5
I live in FL so wasnt too worried about 10w30. Also i use purelator premium oil filters. Pcv is new. Ive put a clamp around one part of heat shield to silence an exhaust noise. How would u isolate stud noise?
Post Fiend
Joined: Mar 2009
Posts: 11,798
Likes: 14
From: Mt. Shasta California
For the ticking; not all have an anti-drain valve and some won't work right so put a Mtrcrft one in to eliminate that. Exhaust stud; just a lot of hard work will fix that. Check with a piece of tubing held to your ear,
More Turbo
Joined: Dec 2012
Posts: 719
Likes: 4
From: WisCONsin
Auto parts store has a stethoscope you can find at most parts stores, and also the exhaust is a rather noisy spot. I have a broken stud, rear driver side and can hear it at start up, it does go away in a little run time. I did always assume that plugs were checked and maintenance was up to par. I use Motorcraft filters Always! they aren't that much. You can also get a piece of brake line and put it into a fuel/rubber hose that goes into your ear to pin point. Check that out, post up results. does it go away with run time or RPM?
Postmaster
Joined: Jan 2012
Posts: 2,693
Likes: 3
From: West of Chicago
Does it sound like this? click the grey box and the Vid will play. If it sounds like that then you have big problems at hand.
I had pretty much the same thing with my old V10 It was burned #9 and #10 pistons. My truck saw a hard live with not so good service history. The truck was using about 2qts of oil every 1k miles so I figured it was a big issue.
Do you have any oil or coolant loss?
I had pretty much the same thing with my old V10 It was burned #9 and #10 pistons. My truck saw a hard live with not so good service history. The truck was using about 2qts of oil every 1k miles so I figured it was a big issue.
Do you have any oil or coolant loss?