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#1
coolant leaking from rear a12 engine
nustad12
Posted on: 2014/1/19 7:54
hi all, I have coolant leaking out between gear box and engine(a12) no coolant in oil, heater hose ok has any one got any ideas only leaks when engine running
 
#2
Re: coolant leaking from rear a12 engine
anths
Posted on: 2014/1/19 8:14
welch plug in the back of the block,probably leaks as the coolant system heats up and expands,pull the motor and replace all your welch plugs because the rest wont be too far behind
cheers anthony
#3
Re: coolant leaking from rear a12 engine
lamb_daiquiri
Posted on: 2014/1/19 8:16
There's a coolant welch plug back there. Could be that.
#4
Re: coolant leaking from rear a12 engine
nustad12
Posted on: 2014/1/19 8:53
all dry around welsh plug
#5
Re: coolant leaking from rear a12 engine
Posted on: 2014/1/19 9:36
Any coolant stains back there? You should be able to see the white stains. Is the heater outlet at back of head leaking from head?
#6
Re: coolant leaking from rear a12 engine
nustad12
Posted on: 2014/1/19 10:02
heater hoses are at front of engine there are no stains
#7
Re: coolant leaking from rear a12 engine
anths
Posted on: 2014/1/19 10:07
as unfamilia said heater outlet,block welch plug (not cam plug)head welch plug or head gasket at the back of the block is the drip central or to one side,perhaps run some coolant in the water to help trace it
#8
Re: coolant leaking from rear a12 engine
ddgonzal
Posted on: 2014/1/19 11:03
There is a welch plug on the back of the block. You
can't see it until the FLYWHEEL is removed.
#9
Re: coolant leaking from rear a12 engine
datsunbeginner
Posted on: 2014/1/19 12:05
There should also be a heater tap in the back of the head with a heater hose running to it unless someone bypassed your heating system.
#10
Re: coolant leaking from rear a12 engine
uteboy1200
Posted on: 2014/1/20 6:58
coolant leaking out between gear box and engine
I have same problem(a15 though) but there is oil mixed in. Was thinkin it could be gearbox main bearing. Only leaks 50-100mls of each when parked.
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