Web8 feb 2024 · The Jeep 4.0 liter six-cylinder engine provided good acceleration from low speeds in Jeep Wranglers and Cherokees for years, with high torque at low engine speeds. It was used in other vehicles (such as the Grand Cherokee) as well, a strong, durable performer loved by its owners. Based on the old 199 cubic inch Typhoon Six (launched in … Web8 set 2024 · The rod bolts are likely torque to yield and should be replaced versus reused, but that in itself probably isn't the issue. Were you having oil pressure issues prior to replacement? Were there any metal shavings in the oil/filter? What lead you to determine the issue was a rod bearing? Click to expand...
4.0L inline six-cylinder engine Specifications - Jeep Cherokee Talk
Web23 gen 2009 · i've got probably the exact same noise. my driveshaft u-joint is good. i drained and replaced the gear oil with proper LSD additive- no change. i have no lateral play in the pinion/pinion bearing. i jacked up rear, pulled wheels and turned pinion, hear noise. thought it might have been the cracked parking btake shoes- replaced but no change. i … Web9 set 2011 · Ticking is perfectly normal in the 4.0... actually there are alot of noises from the 4.0 that are pretty common and they still keep pluggin along, typically your looking at lifter noise but there are other posibilities. birthday vintage images
4.2 engine has strange knock. Jeep Enthusiast Forums
Web5 mar 2024 · Displacement. 4.0 liters (258 cubic inches) Cylinder compression pressure. 120 to 150 psi. Maximum variation between cylinders. 30 psi (from the highest reading) Oil pressure. At idle (600 rpm) 13 psi. Above (1600) rpm 37 to 75 psi. Engine block. Bore diameter. 3.875 to 3.877 inches. Taper and out of round (Maximum) 0.001 inches. Web21 dic 2024 · My 1999 XJ Cherokee's 4.0L engine has had a subtle noise since we bought the Jeep at 94K miles. It sounds exactly as you describe. The sound could easily be mistaken for a valvetrain noise but goes away as the engine warms. A rod bearing or … Web15 set 2024 · Test Drive – The best way to diagnose bearing noise in your Wrangler is to take it for a drive. You’ll be looking to hear the hum increase as the speed picks up. Jack … danum valley conservation area sabah