First, check your PCV function/condition. This is a super cheap and easy part to replace. You can try to soak it in brake cleaner to flush it out or drop it into a jewellery ultrasonic cleaner for a few minutes until the yeech inside of it dissolves and frees itself. This will be the main cause of oil consumption. As for the exhaust manifold, you shouldn't need to drill out anything to remove it. This should be a job you can handle but you will need under car access to get to it. Access to the rear of the engine is limited - be prepared to face some frustration and allow maybe a whole day to remove and reinstall. Be careful with O2 sensors as accidentally denting /crushing or damaging the wiring harness can leave them non functioning. BUT, before replacing that manifold I would at least do the following -
*Check PCV and clean/replace at your discretion
*Remove O2 sensor and clean it out (I soaked mine in a diluted solution of pre wash stain remover which is partly white spirits and distilled water and put it through a jewellery ultrasound cleaner until clouds of contamination has stopped coming out of the housing) DO NOT USE BRAKE CLEANER OR ANYTHING THAT WILL LEAVE A RESIDUE ON IT - IT WILL KILL IT
*Engine oil flush. The engine has experienced constant blow by due to the increased crank case pressure caused by the faulty PCV. Carbon and burnt oil will collect in the rings and piston grooves/gas ports reducing compression and fuel has broken down the engine oil. Here is how I perform an oil flush. Be aware the Accent has different oil levels and filters than the ones in this write up so check service manuals etc. I guarantee this is safe and have done it countless times on much older high mileage cars.
After doing the above suggestions, drive it for a few days and see if the CEL warning goes out. If it does, you may have evaded the need to replace the cat/manifold. Good luck and leave feedback or outcomes on your thread here.
Thanks for posting.
*Check PCV and clean/replace at your discretion
*Remove O2 sensor and clean it out (I soaked mine in a diluted solution of pre wash stain remover which is partly white spirits and distilled water and put it through a jewellery ultrasound cleaner until clouds of contamination has stopped coming out of the housing) DO NOT USE BRAKE CLEANER OR ANYTHING THAT WILL LEAVE A RESIDUE ON IT - IT WILL KILL IT
*Engine oil flush. The engine has experienced constant blow by due to the increased crank case pressure caused by the faulty PCV. Carbon and burnt oil will collect in the rings and piston grooves/gas ports reducing compression and fuel has broken down the engine oil. Here is how I perform an oil flush. Be aware the Accent has different oil levels and filters than the ones in this write up so check service manuals etc. I guarantee this is safe and have done it countless times on much older high mileage cars.
After doing the above suggestions, drive it for a few days and see if the CEL warning goes out. If it does, you may have evaded the need to replace the cat/manifold. Good luck and leave feedback or outcomes on your thread here.
Thanks for posting.
