hello everybody, I have a 2007 G35x I drove to Pennsylvania from New York and drove back the same day and when I got home to my house, I noticed that my radiator fans were on full blast. I was also smelling a scent of coolant when I went back inside my car and checked my temperature gauge it started to rise, so I drove the car down into my driveway and started seeing cool and dripping out on the floor when I looked under the car, I seen that coolant was pouring out from on top of the oil pan by the driver side. I let the car sit overnight and then When I got up this morning, I noticed that the radiator was near empty as I started to pour coolant into the radiator and I looked under the car. I noticed that coolant started dripping down from the driver side over the oil pan... could this be some type of hose that burst because I did hit a bad pothole before I went up to Pennsylvania.

or could this be something more sinister like my water pump?

 

unfortunately, this looks like the WP took a ****. how many miles on the rig? the replacement procedure is not terrible (it's tedious, if anything else). i've had mine done two years ago when a similar leak happened. see my thread: Water pump decisions with 245k on the clock - G35Driver - Infiniti G35 & G37 Forum Discussion

P.S. it *could* be your thermostat housing. check around the top hose that sits underneath the driver side vtc cover. fingers crossed.

 

Check the heater hoses coming from the firewall to the engine. The one on the passenger side has a straight connector and the one on the driver side has a straight connector with a bleed valve. They are both plastic and prone to deterioration. They are difficult to replace due to limited working space.