Kizashi VANOS Timing System Fix Cost & Shop Guide

Had the same issue on my 2010 Kizashi Sport. The check engine light came on and fuel consumption increased significantly. After diagnosis, it turned out to be a failing VANOS solenoid that was causing the variable timing system to malfunction. The symptoms match exactly what you describe, increased fuel consumption occurs because the engine timing gets stuck, preventing optimal combustion. When the VANOS failure happens, the engine runs in a safe mode that sacrifices efficiency. This was a serious issue requiring immediate attention. Left unfixed, it can lead to engine misfires and potential engine damage. The repair involved replacing both VANOS solenoids since they tend to fail around the same mileage point. The diagnostic showed the solenoids were clogged with oil deposits, a common problem on these engines when they reach higher mileage. Regular oil changes with the correct oil grade help prevent this issue. After the repair, fuel consumption returned to normal and the check engine light cleared. The car has been running smoothly for 40000km since then with no VANOS-related issues. A professional diagnosis is recommended since similar symptoms can also indicate other variable timing system problems.

Thanks for sharing your experience. I had identical problems with my Kizashi last year, rough idle and terrible fuel economy combined with the dreaded check engine light. Ended up being the inlet camshaft VANOS system too. Wondering if you could share what the total repair cost was? My VANOS failure repair bill seemed steep and Im curious to compare. Also, have you noticed any other issues since the fix? Mine has been running fine for about 6 months now, though Im religious about oil changes to prevent oil sludge buildup and low power issues from happening again.

Thanks for asking about the costs. The inlet camshaft VANOS repair came to 250€ including parts and labor to fix the faulty solenoid valve. The mechanic found the power supply to one of the camshaft solenoid valves was defective, causing the timing issues. Since getting it fixed, the car has been running perfectly with no check engine light or performance problems. Fuel economy is back to normal too. Like you, I stick to strict oil change intervals now, it really helps prevent oil sludge from building up and causing more VANOS problems down the line. The repair was definitely worth it considering the improved performance and preventing potential engine damage. Regular maintenance is much cheaper than dealing with a complete VANOS system failure.

Thanks for the feedback. I took my car to the shop last week and got the VANOS system repaired. Total cost was 320€ which included new solenoids and labor. The mechanic showed me the old parts, they were completely gunked up with oil sludge. The repair process took about 4 hours. They had to remove several components to access the variable timing system. After replacing both solenoids, they cleared the check engine light and did a test drive to confirm everything was working properly. What a difference it made, fuel consumption is back to normal and the engine runs so much smoother now. No more rough idle or hesitation. Well worth the money spent. Going to keep up with regular oil changes every 5000km to prevent future timing issues.