Why the LQ9 Oil Catch Can Fills Rapidly The LQ9, found in vehicles like the Cadillac CTS-V and STS-V, generates significant power that stresses the stock internal components. Solutions and Performance Upgrades Addressing a filling catch can requires a two-pronged approach: managing the existing pressure and improving the evacuation path.
Understanding Why Your LQ9 Catch Can Filling Too Fast
When the piston rings or cylinder walls wear beyond acceptable tolerances, blow-by gases escape into the crankcase at a much higher rate. Furthermore, the excessive pressure stresses the rear main seal and rod bearings over time.
Regularly emptying the can provides a clear window into the health of your engine, allowing you to catch oil consumption issues before they become catastrophic. Oil residue around the PCV valve hose connection.
Understanding Why Your LQ9 Catch Can Fills Too Fast
Consistent need to empty the catch can weekly or bi-weekly. This surge of contaminated air and oil mist overwhelms the catch can’s capacity, causing it to fill even between oil change intervals.
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