Kia oil consumption
I have done a crankcase pressure test with the pico wps , checking for ring issues with regard to oil consumption.
Is there any other test I can run with my pressure transducers , regarding oil consumption, like maybe checking for worn valve guides?
Customer and warranty company looking for confirmation, but really I am just curious more than anything.
I know, it needs an engine…Just looking for new techniques.
Hi Darren, Did you verify there is not a failed PCV issue going on?
Darren, One thing I do when looking for oil consumption is index the spark plug before I remove it. Any fouling/staining on the insulator will give you an idea if it is ring, intake, pcv issue by the direction the fouling takes place. But you need to know how the electrodes were oriented in the cylinder during use to have a good idea where the oil is coming from.
That is beyond my capabilities. Do not know how to read the spark plug and correlate that to an engine condition. I will look for information on it , something new for me to learn. Thank you
Good for you, Darren. If you're an iATN member, you can find info there. (BTDT). That's not to say you won't find info elsewhere. Here's another thought for you: One way to inspect for lost oil control due to ring problems is to inspect the piston tops for oil wash. Look for shiny marks on the piston tops (at the edges).
I have tried the pressure transducer in crankcase looking for blowby and was never very successful. Only when its a lot on one cylinder conpared to the others could i see a difference. And by that time there was usually a misfire. I needed a known good to compare too. Unfortunately I never had a chance to grab one. I can tell you that a new OE short block always fixed my H/K oil consumption…
Hi Darren, You didn’t mention the mileage on this vehicle, but oil consumption on these engines is a major problem. The low -tension piston rings let too much oil pass up to the top of the cylinder and burn. Not enough to see smoke, but that’s most likely the problem. This customer of yours is likely a candidate for an engine replacement from Kia / Hyundai. Have them take it to the dealer and…
Hyundai/Kia have an SST that uses applied petit Pressure and vacuum to measure bearing clearance based on piston movement at TDC.
That is done using the bearing clearance tester machine that we have here at the dealer.
Hyundai/Kia has more oil consumption issues than most and I haven't had opportunity to address their specific issues. But, this is a pretty common generic condition for most cars with narrow - low tension piston rings. The oil consumption is typically caused by ring sticking. The sticking is almost always due to deposit formation. The deposits are usually related to off-spec oil. Hyundai/Kia…