I have 2008 Kia Rondo with a 2.4 theta engine. At 93K miles the timing chain stretched and jumped 2 teeth. Kia fixed it under warranty. At 103K miles when I started it to warm upon a very cold winter…

Piston Slap

I have 2008 Kia Rondo with a 2.4 theta engine. At 93K miles the timing chain stretched and jumped 2 teeth. Kia fixed it under warranty. At 103K miles when I started it to warm upon a very cold winter day it broke the lower timing chain driving the oil pump and seized the engine. It was out of warranty so bought a rebuilt engine and put it in two months ago (Ocotber) and all seemed fine. Now in January after 2K miles the oil light started coming on at idle. I use 5w-20 oil and a Kia oil filter. I replaced the oil pressure switch, but that did not fix it. I put an oil pressure gauge on it (pic attached) and see the pressure drop as low as 8PSI at 800 RPM or 10PSI at 1000RPM. The Kia Spec. for this model is 166kPa (1.7kg/cm², 24psi) [at 1,000rpm, 110°C(230°F)]. Since the engine was rebuilt with new bearings, do you think it could be the oil pump or oil pump relief valve.

Comments (6)
No. 1-2
Scotty Kilmer
Scotty Kilmer

Editor

could be that, but could also just be a crap rebuild, see that all the time. A rebuild should always include oil pump and pressure valves

Jackofall
Jackofall

What is it at 1500 rpm's hot?