Hi All,

my 2018 CX-5 GT has been recently making this ticking/knocking noise when starting the engine cold. It fades as the engine warms and eventually stops. Either way it seems a bit loud to be considered normal. The car is up to date on service and I have 33,434 miles on it. Any idea what’s causing this sound? Is it critical? Tried attaching a video of it. Not sure if it will go through...Please help.

Thanks!

 

What you're describing sounds like a hydraulic Cam follower/lifter/tappet that is bleeding down. It ticks until it pumps back up with oil taking up the space between the rocker and the cam lobe. I just don't know if our 2.5L engines have solid or hydraulic tappet's. If they're solid, there is a an adjustment for that gap. Either way, it "sounds" (pun intended) like a dealer service/warranty issue.

 

Thanks for the quick response. I’m going to call my dealer tomorrow morning. Do you think this is an immediate threat to the engine in any way?

 

Without phiscally hearing it there is no way anyone can give you a clean bill of health to continue driving it.

The type of oil pump and the * lifter (*by many names i.e HLA ) you have pumps them up almost by the rotation of the engine produced by the starter. The mileage does not normally associate these engine with a *lifter that has problems. However without clearly hearing it in the real world I would suggest having a Certified Auto Technician listen and give you there evaluation.