Auto Parts Search
Mitsubishi Mighty Max Engine >> VALVE TRAIN CLATTER
Continued Valve Train Clatter On
1989-92 Chrysler 2.0L DOHC (VIN R,U)
The AERA membership has experienced many instances of valve train clatter on the Chrysler 2.0L DOHC engines manufactured by Mitsubishi. These noises can be attributed to adjuster sounds that do not stop even after the engine has been running for some time.
This engine, as well as many other overhead cam (OHC) engines, uses hydraulic lash compensators (HLC) to maintain zero (0) lash between the camshaft follower, camshaft lobe and valve tip. If the valve train itself is within wear limits, there are two other possibilities that can lead to continued valve train clatter. They are:
1) A low oil level in the engine, permitting air to be drawn into the oil pump.
2) An oil level that is too high, where oil is stirred by the crankshaft and
mixed with large amounts of air.
In either case, the engine's high pressure oil supply is being mixed with air. If aerated oil enters the high-pressure chamber of the lash compensator assembly, the air will become trapped. As the valve opens, the air is compressed creating abnormal noise when the valve closes. This is similar to excessive dry lash clearance.
The solution to this problem (once the oil level has been verified) is to slowly race the engine up to ten times. Gradually increase the engine speed from idle to 3,000 rpm (hold for 30 seconds), and then gradually slow to idle speed (for 30
seconds). If the abnormal and continued valve train clatter cannot be eliminated, replacement of the hydraulic unit is recommended.
This situation (aeration) may also occur if the vehicle is parked on a slope and restarted. Another possibility exists if the vehicle has been in storage for an extended period.
The AERA Technical Committee
Looking for replacement Mitsubishi Mighty Max engines? Visit our online Rebuilt Engines Store. Need to fix your Mitsubishi Mighty Max engine? Access here the comprehensive online repair guide for your Mitsubishi Mighty Max engine. Click Here to find a used Mitsubishi Mighty Max engine.
Shop online for auto body parts, engines, wheels, lights...
|1996 Mitsubishi Mighty Max Antenna, 4-section mast; 1200 mm cable; With top and side key; A high quality universal fender mount antenna; May require modification or other adjustment to your vehicle upon installation; Backed by 1-year, unlimited-mileage warranty..||$5.62|
|1994 Mitsubishi Mighty Max Water Pump, A high quality, direct fit OE replacement water pump assembly; With 2 years limited Trustbuilt warranty..||$28.77|
|2007 Mitsubishi Eclipse Driver Side Halogen Head Light Assembly, Driver Side Halogen Head Light Assembly; Coupe/Spyder; To Production Date 01/2007, , .||$67.50|
|1989 Mitsubishi Mighty Max Lwb L4, 2.6 L, 2555 CC, 156 CID Rebuilt Engine, RWD, OHC, non turbo, 13 1/2" between bell housing dowel pin centers, (supplied with new head casting)., Warranty: 3-Year/100,000 Mile, .||$1,745.00|
|1991 Mitsubishi Mighty MAX Used Air Flow Meter/Sensor, 3.5, AUTO, FWD, Very Good.||$85.00|
|1987 Mitsubishi Mighty MAX Used Alternator, 2.6, MANUAL, 4X2 2.6L, Very Good.||$83.00|