Hey guys,

I have a persistent coolant leak that I don't know how to fix. I have an 08 base that I track on weekends. I noticed it a while back, and had the hose replace under warranty from the stealership. It is leaking again. The oil pressure gauge is good and so is the temp. I checked it after normal (non-track) driving and it is leaking even under normal driving conditions.

Do y'all have any suggestions what is causing this and what I should do to fix it? Thanks.

Below is a pic to show where it is leaking from.

 

ditch the banjo clamps for hose clamps, or get a lower pressure rad cap such as one from a 03-06 350 i think its a .9kpa or .8kpa vs the 1.18kpa on the 07+, id recommend getting a worm clamp, but your gonna want to clean under the hose due to build up with a aluminum cleaner

 

You should do nothing. Warranty will fix it with a new hose and clamp.

 

This is one time where you should have read what he posted, jus sayin

 

It kind of looks like the hose isn't pushed all the way on, so see if you can push it farther on and see if it still leaks? I have an 08 nismo and haven't seen any problems with it but from the side view mine looks like it's pushed on farther.

 

I replace the spring clamps with worm clamps... it is safe since it is aluminum... I would use the spring clamp on the plastic radiator fitting though... breaks really easy!!!

 

I would still take it back to the dealership than trying to fix it yourself. If you got the warranty, might as well use it...

 

Yeah, I thought about that, but they will just replace the hose again and not fix the source. I'm thinking there is something else going on here. I don't know what though.

I've thought about upgrading the hoses to the Samco. See if that resolves the problem.

 

move the clamp to the exact center of the aluminum spout...its closer to the cap side than away from it.....having it to close to one side or the other can cause leaks...

 

dealer change 3 times the hose of my Z first 2 times they just replace the hose until I ask to have the replaced the part that connects the hose to the engine they replace the clamps for new ones along with the hose.
the problem is the top of clamp if you see the metal is very weak on that area and the clamp don't really wrap around.