Rob Sandlin
Junior Member
I know this has been attributed to the hydraulic lifter not being pumped up with oil. However, I had a similar issue back in the day and it was actually due to the exhaust gas heat riser. The tell-tale sign would be if this clicking is always on the passenger side (speculating here). The exhaust gas heat riser is a flap that is closed when then engine is cold which redirects exhaust gas to warm up the intake air while the choke is on. Once the engine warms up a metallic spring expands and the flap opens. When it's closed it causes pressure in the exhaust manifold and sometimes a slight leak.
So, my question to the forum does this clicking always happen on the passenger side (where the heat riser is) or does anyone ever get the noise on the driver side. I would think just at random it wouldn't always be on the passenger side, although if the issue stems from the oil filter draining down into the pan as some have suggested then maybe that could explain it always being on the passenger side. I have 90K miles on my 2018 with the 5.7 Hemi and this noise has been there for a long time.
So, my question to the forum does this clicking always happen on the passenger side (where the heat riser is) or does anyone ever get the noise on the driver side. I would think just at random it wouldn't always be on the passenger side, although if the issue stems from the oil filter draining down into the pan as some have suggested then maybe that could explain it always being on the passenger side. I have 90K miles on my 2018 with the 5.7 Hemi and this noise has been there for a long time.