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...
|1988 Mitsubishi Mighty Max Door Lock, Front, Passenger Side, A high quality, OE replacement door latch assembly; Backed by 1-year, unlimited-mileage warranty..||$12.42|
|1986 Mitsubishi Mighty Max Valance, Front, A high quality, direct fit OE replacement valance..||$3.63|
|2008 Mitsubishi Raider 17" x 8" Alloy Wheel, Alloy Wheel; 17 X 8; 5 Spokes; 5 Lug; 5.5 Inch BP; New Replica; Cladded Chrome, , .||$215.50|
|1994 Mitsubishi Mighty Max Swb V6, 3 L, 2972 CC, 181 CID Rebuilt Engine, RWD, SOHC, roller cam, passenger side dipstick., Warranty: 3-Year/100,000 Mile, .||$2,081.00|
|1991 Mitsubishi Mighty MAX Used Air Flow Meter/Sensor, 3.0, MANUAL, FWD Without turbo, Very Good.||$75.00|
|1991 Mitsubishi Mighty MAX Used Air Flow Meter/Sensor, 3.5, AUTO, FWD, Very Good.||$85.00|
Help me find
Search DIY repair manuals by VIN...
Need To Fix Your Car or Truck?
Try Our Repair Service Finder
Help me find