5 to 10 second exhaust tick....ONLY SOMETIMES?

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RodRamCar

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Have any of you guys ever experienced what sounds like the exhaust manifold tick but it only lasts maybe 10 seconds at most and does not happen that often? Does piston slapping sound anything like the manifold tick and would make more sense that if it's only every once and awhile that it happens? It seems that possibly the times I like to go out of MDS mode for even a short trip, thats when I hear it too. I will try and get it recorded some time.

I'm running Redline 5w30 and XG2 Fram filter. it hasn't been under 40 degrees lately and 55 in my garage (which is where I heard it) all night.
 

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Piston slap is a rattle - 4 cylinders slapping downward per revolution. It's a noisy clatter.

Mechanical ticking is valve lifter oil starvation of either or both the hydraulic lift or the cam and roller.

Remedies are faster flowing oil = lower viscosity, less restrictive oil filter, oil additives such as moly, and pre lubing if engine hasn't run for a while.
 
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Piston slap is a rattle - 4 cylinders slapping downward per revolution. It's a moisy clatter.

Mechanical ticking is valve lifter oil starvation of either or both they hydraulic lift or the cam and roller.

Remedies are faster flowing oil = lower viscosity, less restrictive oil filter, oil additives such as moly, and pre lubing if engine hasn't run for a while.
I drive the truck every day and usually distance of 10 or more miles always running with MDS on. that description all makes sense and when warm, she runs just fine. I won't worry i guess.
 

Burla

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Can you post a youtube?

I would get a uoa so you can see aluminum level versus iron. Did you already do that? Sadly the best known oil for hemi tick leaves trucks on cold places susceptible to piston slap. So do you have warm idle hemi tick ever? On other oils then 5w30 redline and/or with 5w30 redline? If you have warm idle tick, perhaps you need to run that oil to prevent the greater harm as piston slap is more annoyance then dangerous, but if you don't have warm idle tick, you might look at other oils, even 0w20 redline which has all of the goodies to protect a cam but will likely offer a good option for piston slap.

I would attempt a rp 20-820 as well, I use both on our other car fram u and rp, rp is less stiff.
 

Wild one

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Have any of you guys ever experienced what sounds like the exhaust manifold tick but it only lasts maybe 10 seconds at most and does not happen that often? Does piston slapping sound anything like the manifold tick and would make more sense that if it's only every once and awhile that it happens? It seems that possibly the times I like to go out of MDS mode for even a short trip, thats when I hear it too. I will try and get it recorded some time.

I'm running Redline 5w30 and XG2 Fram filter. it hasn't been under 40 degrees lately and 55 in my garage (which is where I heard it) all night.
Grab the back of the heat shields on the manifolds and give them a tug,just to rule out broken manifold bolts.If you can wiggle the heat shields,the back bolts are broke
 

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Try to isolate when it happens.

I noticed I would get lifter noise for a few seconds occasionally. Narrowed it down to cold start up, moving out of garage or some other very short distance then shut down would result in lifter clatter on next start up. I avoid this whenever possible, but if I just raise the rpm for 10-15 seconds and force oil pressure up around 60 I won't get the clatter.
 

weewillie007

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Have any of you guys ever experienced what sounds like the exhaust manifold tick but it only lasts maybe 10 seconds at most and does not happen that often? Does piston slapping sound anything like the manifold tick and would make more sense that if it's only every once and awhile that it happens? It seems that possibly the times I like to go out of MDS mode for even a short trip, thats when I hear it too. I will try and get it recorded some time.

I'm running Redline 5w30 and XG2 Fram filter. it hasn't been under 40 degrees lately and 55 in my garage (which is where I heard it) all night.
check the passenger side exhaust manifold. Mine and numerous other have had a broken stud(s) on the manifold. And yes the mfg. does know about this.
 

pacofortacos

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Your description sounds like classic oil filter lifter noise - try going to a different filter.
Maybe your anti drain back seal in the filter is just defective.

I run napa platinum long filter and it's quiet, running the oem filter I will get it after about 500 miles.
RP filter was quiet also.
Napa platinum short filter is also quiet for me.
 

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Try to isolate when it happens.

I noticed I would get lifter noise for a few seconds occasionally. Narrowed it down to cold start up, moving out of garage or some other very short distance then shut down would result in lifter clatter on next start up. I avoid this whenever possible, but if I just raise the rpm for 10-15 seconds and force oil pressure up around 60 I won't get the clatter.
My '15 will do this on startup every time after I short-trip it. My in-laws live 1-1/2 blocks away and if we go there, it will tick for a few seconds on startup.

Sounds like sh*t, and I cringe whenever I hear it.

Has done this for as long as I've had her (over 130k miles). I read somewher if you get the rpm up to around 2k and shut it off (as @caulk04 said) that it helps, and it does seem to, but I don't always remember to do it.....lol.

Some members here have also said to hold the pedal to the floor before you crank it, the truck wont start, but will circulate oil. I have not tried this though.
 
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RodRamCar

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No broken exhaust manifold bolts. The heat shields don't have any play whatsoever. The nuts are on there solid as well.
 
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My '15 will do this on startup every time after I short-trip it. My in-laws live 1-1/2 blocks away and if we go there, it will tick for a few seconds on startup.

Sounds like ****, and I cringe whenever I hear it.

Has done this for as long as I've had her (over 130k miles). I read somewher if you get the rpm up to around 2k and shut it off (as @caulk04 said) that it helps, and it does seem to, but I don't always remember to do it.....lol.

Some members here have also said to hold the pedal to the floor before you crank it, the truck wont start, but will circulate oil. I have not tried this though.
*edit* I figured it out lol

When you say hold pedal to the floor, is that just pressing the run button while holding accelerator to the floor? Or accelerator to the floor and brake then start?
 
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RodRamCar

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0w20 at 13 per quart, again as a piston slap option with heavy ep additives for cam wear.
Definitely have ruled out piston slap because I did the oil prime trick, accelerator to floor when starting then let off after a few cranks. No tick noise.
 

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*edit* I figured it out lol

When you say hold pedal to the floor, is that just pressing the run button while holding accelerator to the floor? Or accelerator to the floor and brake then start?

Depress and hold accelerator to the floor, depress and hold brake. Push start button.

Push start button again to stop cranking. For whatever software reason it won't stop cranking when you release the start button. Don't crank for more than 20 seconds at a time or you'll melt the starter motor.
 
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Your description sounds like classic oil filter lifter noise - try going to a different filter.
Maybe your anti drain back seal in the filter is just defective.

I run napa platinum long filter and it's quiet, running the oem filter I will get it after about 500 miles.
RP filter was quiet also.
Napa platinum short filter is also quiet for me.
XG2 is supposed to be cream of the crop. For these trucks and shows better filtering than the RP filters but to be honest I think I would get this little cold start chatter on every filter I've used. Had mopar, rp20-820, 20-500 and the Fram XG2. Can't imagine Napa makes a better filter than the XG2. Them again, I suppose any filter can just be defective but not several in a row. Whatever my situation is sounds like I just need to remember to get RPMs up and oil pressure before shutting off
Depress and hold accelerator to the floor, depress and hold brake. Push start button.

Push start button again to stop cranking. For whatever software reason it won't stop cranking when you release the start button. Don't crank for more than 20 seconds at a time or you'll melt the starter motor.
Yeah the first attempt I think It went on for nearly 10 seconds . It works just fine but yeah I think for my own piece of mind, I'll hit the accelerator up to 2k rpms or so and hold it and then just turn the truck off.
 

HEMIMANN

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XG2 is supposed to be cream of the crop. For these trucks and shows better filtering than the RP filters but to be honest I think I would get this little cold start chatter on every filter I've used. Had mopar, rp20-820, 20-500 and the Fram XG2. Can't imagine Napa makes a better filter than the XG2. Them again, I suppose any filter can just be defective but not several in a row. Whatever my situation is sounds like I just need to remember to get RPMs up and oil pressure before shutting off

Yeah the first attempt I think It went on for nearly 10 seconds . It works just fine but yeah I think for my own piece of mind, I'll hit the accelerator up to 2k rpms or so and hold it and then just turn the truck off.

Pretty weird when it won't stop when you release the start button, isn't it? Seems like a programming error to me.
 

pacofortacos

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XG2 is supposed to be cream of the crop. For these trucks and shows better filtering than the RP filters but to be honest I think I would get this little cold start chatter on every filter I've used. Had mopar, rp20-820, 20-500 and the Fram XG2. Can't imagine Napa makes a better filter than the XG2. Them again, I suppose any filter can just be defective but not several in a row. Whatever my situation is sounds like I just need to remember to get RPMs up and oil pressure before shutting off

Yeah the first attempt I think It went on for nearly 10 seconds . It works just fine but yeah I think for my own piece of mind, I'll hit the accelerator up to 2k rpms or so and hold it and then just turn the truck off.
If you do the really short drive and don't really rev it much past idle on those trips, yeah I think most have it under those circumstances.
That's about the only time that I hear it.
Mine can sit for months and not get it on start up- maybe 1 out of every 10 starts.

Napa = Wix filters

Oem filter is the worst for my truck.

Maybe try 0w-30 oil instead of the 5w-30.
 

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My '15 will do this on startup every time after I short-trip it. My in-laws live 1-1/2 blocks away and if we go there, it will tick for a few seconds on startup.

Sounds like ****, and I cringe whenever I hear it.

Has done this for as long as I've had her (over 130k miles). I read somewher if you get the rpm up to around 2k and shut it off (as @caulk04 said) that it helps, and it does seem to, but I don't always remember to do it.....lol.

Some members here have also said to hold the pedal to the floor before you crank it, the truck wont start, but will circulate oil. I have not tried this though.
Mine has done this too on short drives when cold. I used to move my truck from a lower lot closer to the door at work if I was working late and it would tap for a couple seconds when I started it ti go home. I found that raising rpms to 2k for 10 - 15 seconds prevented it. Only has done it 5 times in 5 1/2 years & 40000 miles. I use the XG2 fram & Quaker State full synthetic and never tapped on starts with the exception of those 5 short trip times.
 
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