Barr2255
Member
I’m new to the forum as far as posting goes…
Back story- I bought a certified pre owned ram 1500 5.7l hemi four years ago with 70k miles. Its a very clean truck. At 90k miles I started hearing a strange “light tapping” which brought me to these forums. I switched to redline 5w-30 and ran a KNN filter. The tapping subsided for about 10k miles then on a road trip home I noticed a weird vibration to the point I thought a wheel was ready to fall off. Pulled over, had it towed home and discovered a broken valve spring on driver side cylinder 3 intake.
Put back together and ran great. A year or so later it developed an exhaust leak from passenger side exhaust manifold at cold start at about 110k miles. After talking to a couple local shops and hearing quotes of up to $1k to replace the exhaust manifold gasket and drill out broken studs I took it upon myself. (I’m mechanically inclined and confident in my know how.) so I jacked up the truck pulled fender liner and pulled the manifold off, classic two broken bolts flush with the block at the back of the exhaust manifold. Welded on a couple nuts and the bolts came right out. Took probably 2 hours start to finish work wise. I did take the exhaust manifold to a machine shop to have them sand it on a table sander to make sure it was true. $50 for Dorman bolts and $50 to have the machine shop level the deck of the exhaust manifold, another $50 to get felpro exhaust manifold gaskets (both sides). Put back together and quite as a mouse and saved lots of money, the wife was happy. Now at 114k miles I started hearing a light tapping noise(most prominent on driver side wheel well), different than an exhaust leak. Tapping at hot idle not cold. Pulled valve cover on drivers side, all rocker clearances checked good no broken springs turned the motor over all springs compressed evenly. Put back together and told myself I’m not buying any parts until it throws a code.
I did put a few ounces of seafoam in to see if it would “loosen” up the “stuck” lifter. That did not work so changed the oil after running the seafoam for a bit and the noise persisted. After the fresh oil the noise was dang near identical but seemed to deminish at times.
Now fast forward a few weeks at 115k miles it started “chirping” yes chirping, like a slipping belt, and the same tapping continues. It seems to struggle when you rev the engine at idle but still no check engine. Its loud enough I’m not going to drive it any distance. But drivability as well as mileage seems fine.
So the weird things I noticed…. Hood open you can barely hear the tapping, but from drivers side wheelwell or underneath the truck it’s very present.
When under acceleration in the cab you can barely hear it but it’s there and the tapping becomes rapid (tied to RPM). The chirping noise is new as of tonight.
Idk if the lifter is failing or its a spun rod bearing. Its not knocking but rather a light tapping noise.
I checked with a hollow pipe all the areas on the drivers side. No noise from the valve cover itself, a solid tapping noise from the fron’t of the head and a loud tapping noise from the exhaust pipe cross over. Other than that everything is normal noise “whooshing oil and steady mechanical movement”.
I change the oil every 5k miles if not sooner most of the time 3500 miles, when I’ve had it apart the top of the head is spotless, I mean not even a bit of varnish.
What could this be? Does a collapsed lifter make a light tapping noise and chirp? Or is a chirping noise indicative of a “spun” bearing on the crank?
I’m leaving on a road trip (rental car) here soon so I will be tearing into the motor when I return. I will be sure to post pics and share what I learn when I pull the motor apart. If it’s bad lifters/ chewed up cam l’ll post pics of the disassembly and assembly if it’s a spun rod bearing I’ll still do the same but will most likely swap it for a crate engine.
Back story- I bought a certified pre owned ram 1500 5.7l hemi four years ago with 70k miles. Its a very clean truck. At 90k miles I started hearing a strange “light tapping” which brought me to these forums. I switched to redline 5w-30 and ran a KNN filter. The tapping subsided for about 10k miles then on a road trip home I noticed a weird vibration to the point I thought a wheel was ready to fall off. Pulled over, had it towed home and discovered a broken valve spring on driver side cylinder 3 intake.
Put back together and ran great. A year or so later it developed an exhaust leak from passenger side exhaust manifold at cold start at about 110k miles. After talking to a couple local shops and hearing quotes of up to $1k to replace the exhaust manifold gasket and drill out broken studs I took it upon myself. (I’m mechanically inclined and confident in my know how.) so I jacked up the truck pulled fender liner and pulled the manifold off, classic two broken bolts flush with the block at the back of the exhaust manifold. Welded on a couple nuts and the bolts came right out. Took probably 2 hours start to finish work wise. I did take the exhaust manifold to a machine shop to have them sand it on a table sander to make sure it was true. $50 for Dorman bolts and $50 to have the machine shop level the deck of the exhaust manifold, another $50 to get felpro exhaust manifold gaskets (both sides). Put back together and quite as a mouse and saved lots of money, the wife was happy. Now at 114k miles I started hearing a light tapping noise(most prominent on driver side wheel well), different than an exhaust leak. Tapping at hot idle not cold. Pulled valve cover on drivers side, all rocker clearances checked good no broken springs turned the motor over all springs compressed evenly. Put back together and told myself I’m not buying any parts until it throws a code.
I did put a few ounces of seafoam in to see if it would “loosen” up the “stuck” lifter. That did not work so changed the oil after running the seafoam for a bit and the noise persisted. After the fresh oil the noise was dang near identical but seemed to deminish at times.
Now fast forward a few weeks at 115k miles it started “chirping” yes chirping, like a slipping belt, and the same tapping continues. It seems to struggle when you rev the engine at idle but still no check engine. Its loud enough I’m not going to drive it any distance. But drivability as well as mileage seems fine.
So the weird things I noticed…. Hood open you can barely hear the tapping, but from drivers side wheelwell or underneath the truck it’s very present.
When under acceleration in the cab you can barely hear it but it’s there and the tapping becomes rapid (tied to RPM). The chirping noise is new as of tonight.
Idk if the lifter is failing or its a spun rod bearing. Its not knocking but rather a light tapping noise.
I checked with a hollow pipe all the areas on the drivers side. No noise from the valve cover itself, a solid tapping noise from the fron’t of the head and a loud tapping noise from the exhaust pipe cross over. Other than that everything is normal noise “whooshing oil and steady mechanical movement”.
I change the oil every 5k miles if not sooner most of the time 3500 miles, when I’ve had it apart the top of the head is spotless, I mean not even a bit of varnish.
What could this be? Does a collapsed lifter make a light tapping noise and chirp? Or is a chirping noise indicative of a “spun” bearing on the crank?
I’m leaving on a road trip (rental car) here soon so I will be tearing into the motor when I return. I will be sure to post pics and share what I learn when I pull the motor apart. If it’s bad lifters/ chewed up cam l’ll post pics of the disassembly and assembly if it’s a spun rod bearing I’ll still do the same but will most likely swap it for a crate engine.