Joined
·
243 Posts
I don't know about the 2.4, but several people here and on other Kia forums have mentioned engine noise, such as valve clatter, diesel sound, and a knocking sound at warm idle that comes and goes. These are not sounds associated with injector ticking or gas(pinging).
Yeh, they use mechanical lfters, but it's the irregular valve clatter and/or knocking noise that is a concern, IMO.
Example 1: Cold start quiet, but as it starts to come off high idle there is what appears to be valve noise.
Example 2: At warm idle only(not while driving and not above 1000 rpm), there is an irregular engine knocking sound. It's a knock, knock-knock...or clack, clack-clack. It's intermittant, not there at all sometimes.
Maybe the variable valve timing has something to do with it, maybe oil flow. I changed the factory oil at 1000 miles, using 5w-30, using a Kia filter. I noticed with the 5w-30 that the engine was quieter while driving(under load), but no improvement on cold start or the occasional knocking sound.
Any thoughts?...
Yeh, they use mechanical lfters, but it's the irregular valve clatter and/or knocking noise that is a concern, IMO.
Example 1: Cold start quiet, but as it starts to come off high idle there is what appears to be valve noise.
Example 2: At warm idle only(not while driving and not above 1000 rpm), there is an irregular engine knocking sound. It's a knock, knock-knock...or clack, clack-clack. It's intermittant, not there at all sometimes.
Maybe the variable valve timing has something to do with it, maybe oil flow. I changed the factory oil at 1000 miles, using 5w-30, using a Kia filter. I noticed with the 5w-30 that the engine was quieter while driving(under load), but no improvement on cold start or the occasional knocking sound.
Any thoughts?...