Help me diagnose a possible head gasket leak on my 99 4.0 cherokee.
White smoke coming from exhaust, noticable most when reversing. No goo under valve cover cap or coolant reservoir or radiator cap. However, the reservoir coolant is light brown while the coolant under the radiator cap is green and looks brand new. Oil from the dipsteak looks normal so I have no idea whats going on. Did a block test with the blue tester fluid a week ago and nothing, but maybe the radiator is clogged? Can't be because the fluid level fluctuated from high when parked for a week then to normal levels after driving around the block.
>>17739372
empty the reservoir coolant and put new fluid in it