Hi All I recently bought a zed and had a mate (Benny C) do an engine pull to remove the useless shit. I was advised by him to get the Raidiator checked ( small leak) and a full engine flush, So i got that done but ended up replacing the raidiator ( leak was big). My problem now is the car gets to 110 degrees with in a matter of 10 to 15 min of driving. Im thinking its the thermostat. How do you know if it needs replacing? I am anable to get to it and when raidiator was replaced i was told they ( Ruth Muller mylne st toowoomba) could not get to thermo as they did not have the right tools needed. I will be taking it to a nissan workshop ( Armstrong auto twmba) but was hoping for some answers on here first Please help? Renee
The radiator hardpipes are easily removed with a hex head socket driver. Do not attempt to remove the hex bolts with an allen key. Will most likely snap your socket, flare out the hex or slip off and lose a lot of nuckle skin. If the internal hex has been damaged, you can hammer a socket around the bolt itself (possibly 12mm) and remove with a socket driver. Exercise caution when tightening the bolts also. Refer to an episode of "2 Idiots" for what can potentially happen. Have you checked your coolant levels? With vehicle cool, get the front of the car higher than the rear- either park uphill or jack up the vehicle (NOT from the radiator crossmember). With coolant flush, will have to top up a couple of times to get rid of air pockets. Check that clutch fan is properly operating also. Buy 2 cartons of Summer and take it back to benny. A slab even.... will certainly be cheaper than a Nissan workshop.
Hey mate, I'd go to TAS before Armstrong auto, thermostat will be quick and easy job, and they should have the testing gear there too, to make sure the system is properly flushed.
Time for a rebuild definately time for a rebuild, forged internals, aftermarket gear all round, oversized valves, cams, ported heads, big dumps and huge turbos...
Also when bleeding the cooling system make sure the heater/aircon is set to its highest heat as air can get trapped in the heater core
If it did not overheat before they changed the radiator, it sounds like they did not fill it up again properly. As OZX_300 says, it is not just a matter of filling it up. You need to get the front up high and run it until the thermostat opens while you keep topping up.
