2009 Pilot 3.5, 215K miles.
Vehicle has misfires on cylinders 1-3. Found the rear camshaft to be 5 teeth off, front camshaft and crank are in-time. Timing Belt has an abnormal wear pattern, see attached.
The Hydraulic Tensioner shows no leakage and requires a normal amount of effort to compress using a vice. Water Pump and idler both spin smoothly w/o play. The tensioner adjuster bearing has a very slight amount of play, but some of these do. Rear Cam spins fine.
Prior service history:
- Aisin Timing Belt Kit was installed 2 years and 30K ago.
- Front camshaft was replaced 30K ago due to pitting and scoring. At the time, the front cylinder head had a significant amount of sludge but the rear cylinder head was clean. As part of this repair, the front cylinder head was removed and hot-tanked at a machine shop.
Any ideas?
Vehicle has misfires on cylinders 1-3. Found the rear camshaft to be 5 teeth off, front camshaft and crank are in-time. Timing Belt has an abnormal wear pattern, see attached.
The Hydraulic Tensioner shows no leakage and requires a normal amount of effort to compress using a vice. Water Pump and idler both spin smoothly w/o play. The tensioner adjuster bearing has a very slight amount of play, but some of these do. Rear Cam spins fine.
Prior service history:
- Aisin Timing Belt Kit was installed 2 years and 30K ago.
- Front camshaft was replaced 30K ago due to pitting and scoring. At the time, the front cylinder head had a significant amount of sludge but the rear cylinder head was clean. As part of this repair, the front cylinder head was removed and hot-tanked at a machine shop.
Any ideas?