BMW N52/N54 Camshaft Bearing Ledges
If your 05-08 N52 (found in 128i, 325i, 328i, 330i, 525i, 528i, 530i, X3, X5 & Z4) or 07-08 N54 (found in 135i, 335i, 535i, X3, X5) equipped BMW is shuddering at idle and giving you a check engine light with VANOS related codes (or boost leak related codes in N54 engines), it may be time for a camshaft bearing ledge replacement.
The metal rectangurings that are inside the camshaft bearing ledges (which house the camshafts) originally equipped on the N52 and N54 engines wear down with time, allowing play within the bearing ledges. This play leads to grooves developing in the ledges and allows fluctuations in oil pressure, causing the check engine light to come on.
What can be done to fix it? In both the N52 and N54 engines, the camshafts are removed and the metal rectangurings are replaced with more resilient superceded BMW OEM Teflon rings. In both the N52 and N54 engines, the camshaft bearing ledges are inspected and replaced if they are grooved. The N54 engines have both exhaust and intake bearing ledges, while the N52 engines only have exhaust bearing ledges.
As the camshaft bearing ledge replacement is a labour intensive task, it’s necessary to keep the vehicle in the shop for several days while the job is completed.
For a camshaft bearing ledge replacement estimate for your BMW, please contact us by phone at 905-841-8948 or e-mail us at email@example.com.