alot of air blows out when burping coolant! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

nicks13chandler · 11-11-2012, 04:12 PM

so i just got my ka24de s13 on the road yesterday after swapping a motor in it. i did a thermostat and temp sensor because the sensor wasnt reading right. so i drained the coolant, filled it up and went to burp it. it was looking good until my car got to operating temperature and a lot of air started coming out of the radiator (burper). ive done alot of coolant flushes before and never had this happen. im leaning towards a head gasket as the problem but im new to 240's and dont know if theres anything else it could be. (lines not ran right, vacuum lines?, etc..) i also didnt know it had a bleeder valve for the coolant so that never let the air bubbles out. any help would be greatly appreciated, thank you.

feito · 11-11-2012, 05:17 PM

are u saying u didnt remove the coolant bleeder screw when u filled up the system? The one on the intake manifold, right on top of the coolant outlet pipe, little 10mm bolt. Besides removing the bleeder, ka's can be tricky to bleed the coolant system. Sometimes i have had to let it overheat just a little and then let it cool down to top it off again. gl

project-c2 · 11-13-2012, 08:57 AM

Use the bleeder bolt. Quite a bit of air gets trapped in the head.

jesse_s13 · 11-13-2012, 09:01 AM

Open the bleeder valve and jack up the front of your car. A lot of air gets trapped in these cars. Takes time.

racepar1 · 11-13-2012, 12:40 PM

Agreed, IF you didn't bleed it properly that could definitely be an issue. If you DID bleed it then I would almost certainly say the headgasket. Bubbling through the radiator when the car is running is a CLASSIC sign.

j20accord00 · 11-13-2012, 02:03 PM

just had to redo mine last night..mine went up to 214* on the last burp and now hangs out around 183*

make sure you got the heat on to run the air out of the heater core as it tends to get trapped in there. also I remove that bleeder bolt entirely and fill the rad till it overflows from both the filler on top of the rad and the bleeder bolt so that way there is no chance of air being left in there.

As mentioned before it can be a bit tricky to remove all air sometimes but it just takes a couple times and you'll be good to go

nicks13chandler · 11-17-2012, 07:48 PM

alright thanks alot

11-11-2012, 04:12 PM	#1
nicks13chandler Join Date: Sep 2012 Location: south jersey Age: 32 Posts: 17 Trader Rating: (0) Feedback Score: 0 reviews	alot of air blows out when burping coolant! so i just got my ka24de s13 on the road yesterday after swapping a motor in it. i did a thermostat and temp sensor because the sensor wasnt reading right. so i drained the coolant, filled it up and went to burp it. it was looking good until my car got to operating temperature and a lot of air started coming out of the radiator (burper). ive done alot of coolant flushes before and never had this happen. im leaning towards a head gasket as the problem but im new to 240's and dont know if theres anything else it could be. (lines not ran right, vacuum lines?, etc..) i also didnt know it had a bleeder valve for the coolant so that never let the air bubbles out. any help would be greatly appreciated, thank you.

11-13-2012, 09:01 AM	#4
jesse_s13 Nissanaholic! Join Date: Aug 2010 Location: Sacramento,CA/Fresno,CA/El Paso,Tx Posts: 1,829 Trader Rating: (5) Feedback Score: 5 reviews	Open the bleeder valve and jack up the front of your car. A lot of air gets trapped in these cars. Takes time. __________________

11-13-2012, 02:03 PM	#6
j20accord00 Zilvia Addict Join Date: Oct 2006 Location: SEASIDE PARK, NJ Age: 38 Posts: 720 Trader Rating: (4) Feedback Score: 4 reviews	just had to redo mine last night..mine went up to 214* on the last burp and now hangs out around 183* make sure you got the heat on to run the air out of the heater core as it tends to get trapped in there. also I remove that bleeder bolt entirely and fill the rad till it overflows from both the filler on top of the rad and the bleeder bolt so that way there is no chance of air being left in there. As mentioned before it can be a bit tricky to remove all air sometimes but it just takes a couple times and you'll be good to go __________________ 92 Coupe ka-t

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11-11-2012, 05:17 PM	#2
feito Nissanaholic! Join Date: May 2007 Location: Texas Posts: 1,999 Trader Rating: (1) Feedback Score: 1 reviews	are u saying u didnt remove the coolant bleeder screw when u filled up the system? The one on the intake manifold, right on top of the coolant outlet pipe, little 10mm bolt. Besides removing the bleeder, ka's can be tricky to bleed the coolant system. Sometimes i have had to let it overheat just a little and then let it cool down to top it off again. gl

11-13-2012, 08:57 AM	#3
project-c2 Leaky Injector Join Date: Jan 2012 Location: Honolulu, HI Age: 42 Posts: 76 Trader Rating: (4) Feedback Score: 4 reviews	Use the bleeder bolt. Quite a bit of air gets trapped in the head.

11-13-2012, 12:40 PM	#5
racepar1 Post Whore! Join Date: Jul 2007 Location: Simi Valley, CA Age: 41 Posts: 9,006 Trader Rating: (106) Rides Gallery: racepar1 Feedback Score: 106 reviews	Agreed, IF you didn't bleed it properly that could definitely be an issue. If you DID bleed it then I would almost certainly say the headgasket. Bubbling through the radiator when the car is running is a CLASSIC sign.

11-17-2012, 07:48 PM	#7
nicks13chandler Join Date: Sep 2012 Location: south jersey Age: 32 Posts: 17 Trader Rating: (0) Feedback Score: 0 reviews	alright thanks alot