6.4 hemi tick?

[SnakeEyes]

I have finally been driving my truck since I bought it since I'm nowrecovered from my knee surgery. I noticed my truck has developed a tick. I dunno if it's from changing to amsoil vs Pennzoil but there both Chyrsler certified so I wouldn think that would do it. I was thinking of adding a qt of synthetic Lucas oil stabilizer next oil change thinking it might be a sticking lifter or something else. My neighbour thinks it could be a exhaust leak since it can be heard in both wheel wells but it doesn't seem to get quieter once the truck runs hot. I've thought about taking it into the dealer to get looked at along with a horrible squeak in the rear that's developed since it warmed up but Im sure they will say it's my othe exhaust that I changed and play stupid.
Anyone got any other ideas or cured there hemi tick?

[Jack187]

I have finally been driving my truck since I bought it since I'm nowrecovered from my knee surgery. I noticed my truck has developed a tick. I dunno if it's from changing to amsoil vs Pennzoil but there both Chyrsler certified so I wouldn think that would do it. I was thinking of adding a qt of synthetic Lucas oil stabilizer next oil change thinking it might be a sticking lifter or something else. My neighbour thinks it could be a exhaust leak since it can be heard in both wheel wells but it doesn't seem to get quieter once the truck runs hot. I've thought about taking it into the dealer to get looked at along with a horrible squeak in the rear that's developed since it warmed up but Im sure they will say it's my othe exhaust that I changed and play stupid.
Anyone got any other ideas or cured there hemi tick?

what year model? i know the hemi in my old jeep had a weird exhaust related tick. All it took was inserting a plate onto the block in the EGR flow and it went away.

[Ed1774]

Both the 5.7 and the 6.4 Hemi engine make a unique noise when put into a 2500 series truck. I just traded a 2010 5.7 Hemi equipped 2500 on my new 6.4 PW and both truck have a noise that in my opinion originates in the exhaust. For whatever reason a 1500 series truck with a 5.7 won't make the noise but a 2500 will. It's almost like a pinging, knocking, noise heard when under acceleration. Or, in you case, when you first start the truck up and it runs at the high idle for a minute you hear it. But as soon as the truck goes down to idle it goes away.

If its just a tick and not the above mentioned noise then it could be a broken exhaust manifold bolt or a bum lifter. Just make sure its not the factory equipped special ping/knock 2500 noise.

[SnakeEyes]

It's a 2015, just hit 10,000km. It sounds like a exhaust leak but it doesn't go away once the truck warms up like they usually do. And the sound can be heard from both sides, not just one. Which makes me think lifter or maybe something else. It's more notable when it's cold but it's a obvious sound whenever I drive down the alley at work an I can heard it off the side of the building

[Stickman]

My 5.7 almost sounds like a Cummins at idle, hot or cold, goes away when on the gas. It sounds concerning but haven't had any issues so far so I'm assuming it's normal.

[cruz]

My 5.7 almost sounds like a Cummins at idle, hot or cold, goes away when on the gas. It sounds concerning but haven't had any issues so far so I'm assuming it's normal.

X2 ,albeit a quiet Cummins.

[leo72987]

My 5.7 almost sounds like a Cummins at idle, hot or cold, goes away when on the gas. It sounds concerning but haven't had any issues so far so I'm assuming it's normal.

X2 ,albeit a quiet Cummins.

Haha i have the same tick on my 2005 as well lol. Confuses the hell out of my chevy buddies xD my truck has 171000 miles if there was a problem damn thing would have blown up by now haha. At least thats what i tell myself to be fair i have done both exhuast manifold gaskets and the noise does go away when warmed up.

[SnakeEyes]

I'm gonna do a exhaust system check ove when I do me next oil change. Re torque all the clamps and header bolts and such. I'm also thinking I'll go back to manual spec Pennzoil ultra IF I can find it somewhere other then $17/qt from the stealership and then add half a qt of Lucas sythetic oil stabilizer and see if that quiets it down a bit just so I know kinda think

[Ed1774]

SnakeEyes, I think your truck is making the typical Hemi in a heavy duty truck noise. I know it sounds like chit but it's normal. My brand new PW with 250 miles on the odometer is doing it and my 2010 with the 5.7 sounded even worse. Before I bought my PW I test drove a regular 2500 just to test out the new 6.4 and that truck did it also.

I wouldn't waste money on snake oil because the sound won't change. I think it has to do with the exhaust pipe design which creates the noise. Go drive a 1500 Ram with a Hemi and it won't make the noise. A 5.7 Hemi engines comes off the same assembly line yet sound very different in a 2500. The exhaust piping in a 1500 is different than a 2500 so I'm putting my money there.

[SnakeEyes]

Well after reading your post im gonna agree with that... I think it could be a header design flaw! I just looked at my cousins SRT8 with the 6.4 and it has a far better header design and no tick whatsoever. I even thought about doing a SRT header swap but there's no way they would fit.

[Graveltravels]

My buddy has a 6.4 SRT 8 in his '07 wrangler, and it makes this tick too


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[Ducky's Dad]

My '05 is close to 50M and has had the tick forever. I wasn't worried until a couple of days ago when a professional mechanic came by the house to pick up a car for service and I started the PW to move things around. He was standing on the passenger side and immediately told me I had an exhaust leak. Turns out he seems to be right. The tick on the right side goes away when the truck is warmed up, even though the hemi tick continues. I am just never on the right side when the truck is started from cold, so never noticed. He told me that these things are known to crack exhaust manifolds, so that's probably a worst case. I have read about the broken manifold bolts, but has anyone experienced a cracked manifold?

[coder]

My '05 is close to 50M and has had the tick forever. I wasn't worried until a couple of days ago when a professional mechanic came by the house to pick up a car for service and I started the PW to move things around. He was standing on the passenger side and immediately told me I had an exhaust leak. Turns out he seems to be right. The tick on the right side goes away when the truck is warmed up, even though the hemi tick continues. I am just never on the right side when the truck is started from cold, so never noticed. He told me that these things are known to crack exhaust manifolds, so that's probably a worst case. I have read about the broken manifold bolts, but has anyone experienced a cracked manifold?

What happens is the manifold bolts, specifically the passenger side back bolt near where the A/C condensation drips down, rusts through and snaps, other bolts may break overtime but this one is usually first. I have never heard of the actual manifold breaking.

[joshet89]

Why wouldn't you at least take it to the dealership and have them take a look at it? Even if they don't find anything, it will at least have been documented in chryslers system if a problem comes up in the future.

[Ducky's Dad]

Mine is way out of warranty, so going to the dealer is the last resort. I need to get out a big screwdriver and my stethoscope and try to isolate the exhaust noise, then figure out what the fix will be.

Speaking of documenting things in Chrysler's system, I took the truck to the local dealer under warranty once for a steering linkage recall and a couple of times for an unintended acceleration problem. They said my steering system was OK (there are two more recalls on that same steering system right now), and on another visit they put their scanner on the truck and confirmed that I had what appeared to be unintended acceleration and they saw my series of ignition key cycles to clear it. They documented it in the system. That dealership subsequently changed ownership and all the records are gone, even though I think they are required by law to retain recall and safety-related issues. Data is not on the dealer computer and not in the Chrysler system. Fortunately, I still have the paperwork (somewhere), but the service department knows nothing.

[joshet89]

I understand for a vehicle that is out of warranty, but one with less than 10k on the clock??

[PWDan]

I'm not sure about the 6.4s but the 5.7s are known for ticking and I was always told it was a lifter. My 04 started at around 10,000 miles and I took it to the dealer 3 times because of it. They told me they couldn't duplicate the noise but that was complete BS since it did it every time I started it and went away once it warmed up. I figured it would at least be documented with Chrysler but my 4th time back there they told me they had no record of my truck ever being there because of a problem with their computers. So much for having it documented. My friends 06 actually got to the point that the dealer had to change one bank of lifters and the cam. My 2010 does it on occasion to so I just hope it's the same as my 04 and just keeps on running perfect.

[adeluca73]

I think mine has recently developed tick disease too. It's faint, onky happens on this one road & 55-65mph, and is very rhythmic. At higher highway speeds, & once it's running hot, I don't hear it.

Sounds like it's on the passenger side as well

[Will]

Mine had a small tick every now and then, which I chalked up to fuel related depending on where I got fuel, haven't heard it at all since I got a tuner...

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[SnakeEyes]

I'm gonna get my oil for my oil change and take it to the dealership for the oil change an grease up and a 10k check over as well as get them to fix the hirrible squeak in the rear and bring up my "horrible" engine tick and see what they say

[Ducky's Dad]

Well, it turns out that my hemi tick has been augmented by two broken studs on the right side exhaust. One on the manifold and one on the downtube, both rusted as you guys predicted. So, a new question: Has anybody replaced these studs with stainless steel to combat the rust problem? Adequate tensile strength? I suspect galvanic reaction can be minimized with a liberal dose of anti-seize? Or am I just all wet?

[Txpowerwagon]

Has anyone with a 6.4 had a confirmed case of broken exhaust manifold studs?? My dealer said it was normal but there was no other 6.4 on the lot that sounded that way.. took to another dealer to get my TPMS low threshold changed and they listed to a couple videos and said something was defiantly NOT right and to bring it in... guess we'll see....

[SnakeEyes]

My dealer was less then useless.. They said its my exhaust sustem I installed not the motor.
After reading that other thread about broken studs I was wondering the same... And if taking them out now while the truck has 10k on it an replace them with some good grade 8 heavily anti seized bolts would be a good idea

[Snowsled]

Tick is pretty generic. All I hear on my 6.4 is the clicking of fuel injectors. You can hear it on both sides, easy to hear at idle and completely normal. My '06 Hemi had pretty good piston slap when cold, it was quiet warmed up at 140k miles. Exhaust leak would probably be one side or the other. Hard to say without a little more description or video.