These engines are expensive to rebuild. Even a stock master rebuild kit is around $1,000 and if you choose performance upgrade parts you can easily add another $1,000 to $2,000. Then your machine shop costs may be $400 to $1,500. Then you've got to pay someone to do the work which could be another $2,000 to $3,000.
I'm very sure all WJ's are recommeded by the factory to be running a 30w multi grade motor oil,be it dino or synthetic. Either a 10w/30 or a 0~5w/30 in colder climates. Read your owners manual. Your engine was not built with tolerences to run a 40w motor oil!
4010 posts · Joined 2008. #2 · Mar 18, 2011. WELCOME!!! You can just add SeaFoam to the throttle body. You dont have to go through the brake booster hose. 1999 WJ 4.7L V8, 242 TC, Front Aussie Locker, 4 Inch RC X-Series lift, 17x8 w/ 4.5BS Black Rock Vipers, 285/70/R17 BFG KM2's, All AMSOIL Synthetic Fluids . Here are some tips and tricks to changing oil and filter on the Jeep Dodge Chrysler & Mitsubishi 4.7 liter engines. Also, show how to reset PERFORM SERVICE o
I picked up an '02 JGC Limited with a 4.7 vin N that #7 intake valve had very slightly kissed the piston. Totally repairable by rebuilding the heads installing seats or using replacement heads. It has 274K miles on it ATM. Now, I also picked up a perfectly maintained well running 02 Vin J 4.7, (HO) with well under 100K miles on it, for very
Intermittent 4.7 oil pressure/coolant issues. Hey guys, i drive a 2000 WJ 4.7 (non HO) with about 170k miles. lately i've had a strange issue that i'm unsure how to pin point. The oil pressure has read very high, in the 65-70 range, where it is typically in the 45-50. this seemed to be resolved when i checked my oil level and found it low The 2004 Jeep Grand Cherokee (WJ) 4.7i V8 has a V 8, Petrol engine with 4701 cm3 / 286.9 cu-in capacity. How many horsepower (hp) does a 2004 Jeep Grand Cherokee (WJ) 4.7i V8 have? The 2004 Jeep Grand Cherokee (WJ) 4.7i V8 has 225 PS / 222 bhp / 165 kW. T wo different transmissions are offered for the 2005-2010 Grand Cherokee models. An all-new W5A580 five-speed automatic transmission offers smooth shifts and optimum fuel economy with the 3.7-liter V-6. The 545RFE five-speed automatic has been refined for higher-quality shifts while increasing the Grand Cherokee’s maximum towing capacity.

Most common problems with 4.0L and 4.7L jeeps. From my experience owning two WJ jeeps. 1. Oil leaks from rear main seals, valve covers and oil pan. High mileage oil seems to help. Rebuild with new gaskets. 2. Burns oil at higher mileage. High mileage oil and or thicker viscosity oil seems to help.

4.7 jeep engine has coolant leak on the bottom of the timin chain cover. Only leaks when engine is cool and only leaks about a teaspoon of coolant in a 12 hr period. No coolant misxe in the oil.
1968 posts · Joined 2011. #8 · Feb 7, 2017. I found a 4.7 locally with 99k miles for $1,200. I may buy it and swap it in and take some time to properly rebuild my original engine and keep it as a spare. .
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    • jeep wj 4.7 oil capacity