coolant pouring from hole in waterpump Assy. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

CoasTek240 · 12-02-2006, 03:56 PM

Ok so I just installed a new OEM fit Koyo rad. and new hoses and clamps. My Rad had cracked last a couple weeks ago and Ive only driven it once since then.(just back to my house after discovering what was wrong at a friends house)
I followed all the instructions in the FSM. It was a super easy install. Then, I was pouring in 7 qts. of new coolant and i noticed my feet getting wet. I inspected, and saw coolant was leaking from my waterpump/pulley assy.
The part of the waterpump that connects to the mech. fan pulley has a small drain-sized hole in the bottom. I cant tell whether thats supposed to be there or not. It obviously supposed to be plugged at least bc im sure 6 out of the 7 qts of coolant is on my driveway now.
please if anyone can help itd be much appreciated.

projectRDM · 12-02-2006, 04:17 PM

There is a hole there, but it's not supposed to leak. The seal that prevents that from happening has gone, so replace the water pump.

thejapino · 12-02-2006, 04:19 PM

that small hole under the pulley is there for the bearing of the pump. im guessing its for cooling the bearing down. Once you overheat the engine, the seal that keeps coolant out of the bearing gets fried and lets coolant pass through the bearings and out the hole under the pulley. You have to replace the water pump! Might as well change the thermostat while you're at it.

CoasTek240 · 12-02-2006, 05:46 PM

you guys are awesome. I feel soooo much better knowing that now. Im gonna get a new waterpump and thermostat asap.

gotta240 · 12-02-2006, 06:02 PM

Blah...Dont be a pussy, weld that fucking hole!!! J/K

Actually R240na hit it on the head. the seal is gone, and so is your water pump...replace it.

btw- clean that coolant up! Animals love that stuff, but its sure to kill them.

cmcdougle · 12-02-2006, 10:24 PM

Get an electric fan while you're at it, or at least a new fan clutch. Electric fans are quieter and add like 1 horsepower!

**mrmephistopheles** · 12-03-2006, 12:42 AM

beating a dead hose here, but if your weep hole is leaking, you need a new water pump STAT.

12-02-2006, 03:56 PM	#1
CoasTek240 Post Whore! Join Date: Jan 2002 Location: VA Age: 40 Posts: 3,034 Trader Rating: (3) Feedback Score: 3 reviews	coolant pouring from hole in waterpump Assy. Ok so I just installed a new OEM fit Koyo rad. and new hoses and clamps. My Rad had cracked last a couple weeks ago and Ive only driven it once since then.(just back to my house after discovering what was wrong at a friends house) I followed all the instructions in the FSM. It was a super easy install. Then, I was pouring in 7 qts. of new coolant and i noticed my feet getting wet. I inspected, and saw coolant was leaking from my waterpump/pulley assy. The part of the waterpump that connects to the mech. fan pulley has a small drain-sized hole in the bottom. I cant tell whether thats supposed to be there or not. It obviously supposed to be plugged at least bc im sure 6 out of the 7 qts of coolant is on my driveway now. please if anyone can help itd be much appreciated.

12-02-2006, 10:24 PM	#6
cmcdougle Zilvia FREAK! Join Date: May 2006 Location: Irvine, CA Posts: 1,361 Trader Rating: (0) Feedback Score: 0 reviews	Get an electric fan while you're at it, or at least a new fan clutch. Electric fans are quieter and add like 1 horsepower! __________________

12-02-2006, 04:17 PM	#2
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 51 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	There is a hole there, but it's not supposed to leak. The seal that prevents that from happening has gone, so replace the water pump.

12-02-2006, 04:19 PM	#3
thejapino Zilvia Addict Join Date: Jan 2004 Location: The City By The Water - YEEE! Posts: 605 Trader Rating: (0) Feedback Score: 0 reviews	that small hole under the pulley is there for the bearing of the pump. im guessing its for cooling the bearing down. Once you overheat the engine, the seal that keeps coolant out of the bearing gets fried and lets coolant pass through the bearings and out the hole under the pulley. You have to replace the water pump! Might as well change the thermostat while you're at it.

12-02-2006, 05:46 PM	#4
CoasTek240 Post Whore! Join Date: Jan 2002 Location: VA Age: 40 Posts: 3,034 Trader Rating: (3) Feedback Score: 3 reviews	you guys are awesome. I feel soooo much better knowing that now. Im gonna get a new waterpump and thermostat asap.

12-02-2006, 06:02 PM	#5
gotta240 Post Whore! Join Date: Dec 2005 Location: so cal Posts: 3,496 Trader Rating: (21) Feedback Score: 21 reviews	Blah...Dont be a pussy, weld that fucking hole!!! J/K Actually R240na hit it on the head. the seal is gone, and so is your water pump...replace it. btw- clean that coolant up! Animals love that stuff, but its sure to kill them.