2006 explorer 4.0 anti freeze leak

[tdbil]

hi folks, have a leak from back end of drivers side head where it meets the block. at idle it does not leak, when engine is brought up to 2500 or more rpms for 30 seconds to 1 minute and let off throttle quickly coolant blows out from the spot i mentioned above. connected air hose to back cylinder,engine turned until it got to compression stroke and no coolant leaked out went to middle cylinder and air blew in to valve cover and or intake. ran compression test on both cylinders and got only 30 lbs. any help on this would be greatly appreciated,thanks.

 

[Flag Gibby]

Sounds like the head gasket has failed on that side for some reason.

 

[Themightyquinn]

I concur with Gibby. you need to replace at least the driver side head gasket, but i would recommend replacing both because the passenger side gasket is proly on its way out soon too.