I replacer the radiator in my 87 4runner, after it started leaking out of the top front of the grill. now there is a leak on the driver side of the engine ant the bottom front. any ideas?.....

 

Hose under alternator?

 

not the hose, I watched it while the motor was running for a couple minutes. the leak looked like it was coming out behind the belt pulley area

 

not the hose, I watched it while the motor was running for a couple minutes. the leak looked like it was coming out behind the belt pulley area

 

Look at inferno451 write up on a pressure tester

Home made cooling system pressure tester!

 

behind belt pulley? water pump area?

 

Yes, it is the waterpump weephole. You most likely need to replace pump.

 

Looks like the radiator was just the easiest leak that required the least amount of pressure. Now that it's fixed, other leaks have sprung now that the system is at the pressure it should be.


If it's leaking from behind the timing belt cover (near the bottom) then yes, your water pump is failing. Have it replaced and do the timing belt too while you are at it. Unless this is a 22RE, but you didn't specify.

 

yes I believe it is the timing chain cover, so... I guess its a new water pump, any idea what the time is for replacing one of those?

 

yep, 22re

 

The water pump on a 22re is pretty easy. You have to drain the cooling system and at least remove the fan. Some would pull the radiator for better access. That's easy as well. I would recommend setting your new pump out and as you pull each bolt out make sure you put the in the same hole. I don't think it is a big deal but a very good habit to be in on a 22re. Clean the timing cover put the new gasket on and bolt the pump up torque to spec and reinstall all removed parts fill with coolant check for leaks. Should be an easy short afternoon project.

 

Yup waterpump. I didn't read here before my waterpump froze on me that it does leak from the weep hole before it goes out. Luckily I was just houses away from home and just coasted home.
I removed the fan and shroud but left the radiator in and had plenty of room. Took a couple hours, easy fix.

 

Thanks!