What is the solution for excessive oil consumption in the Buick LaCrosse 2.4?
3 Answers
Buick LaCrosse 2.4 excessive oil consumption causes and solutions are divided into the following three points: 1. Check if the waste gas pipe is unobstructed: If it is not unobstructed, clean or replace it in time. After driving for a period of time, check whether the engine oil is lacking and whether the exhaust pipe emits blue smoke. 2. Measure the cylinder pressure: If the cylinder pressure is normal, then it should be the aging and damage of the valve oil seal that causes excessive oil consumption. Replace the valve oil seal. 3. If the cylinder pressure of a single cylinder, multiple cylinders, or all cylinders is lower than the normal value, then only by opening the cylinder head to check whether the cylinder gasket is flushing the oil passage, the degree of cylinder bore wear, piston wear, the elasticity of the piston rings, etc.: (1) If it is only flushing the oil passage, replacing the cylinder gasket is sufficient. (2) If the cylinder bore and piston are excessively worn, it is recommended to overhaul and replace all cylinder liners, pistons, and piston rings. (3) If the cylinder bore wear is not significant, you can replace the pistons and piston rings. (4) If it is due to the piston rings, then only replacing all piston rings is necessary.
Oh, the issue of oil burning in the Buick LaCrosse 2.4 is something I've encountered too, and it's quite common. Mainly, after the engine has been used for several years, the piston rings and valve stem seals inside may wear out, allowing oil to leak into the combustion chamber and burn. Pay attention to the oil dipstick when driving normally. If the oil level drops noticeably in a short time, it needs to be addressed immediately. It's best to have a professional auto repair shop check it out to determine whether to replace the seals or go for a complete overhaul. Using high-quality oil can also delay the problem, such as choosing the 5W-30 grade, which is recommended by Buick's original equipment manufacturer. Additionally, a stuck PCV valve could also cause this issue, and cleaning or replacing it can save a lot of money. Don't wait until the engine fails—get it fixed to drive with peace of mind.
My LaCrosse 2.4 started burning oil after reaching 100,000 kilometers. The oil level would drop by half within a month after each top-up, and there was noticeable smoke while driving. It gave me quite a headache until an experienced mechanic diagnosed severely aged valve stem seals as the culprit - the oil was leaking into the combustion chamber. The solution was straightforward: I spent some money replacing the seals and switched to premium engine oil, which basically resolved the issue. Regular maintenance is key - change the oil every 5,000 km and monitor oil levels. After this repair, it should run smoothly for several more years. Buicks are sturdy vehicles, but aging components need timely attention to avoid costly major repairs later.
