Coolant leak - gurgling hiss from rat's nest
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Coolant leak - gurgling hiss from rat's nest
On shutdown I hear a gurgling, hissing sound coming from the middle of the rat's nest toward the front. Then the overflow fills up and dumps coolant because air is taking up space in the cooling system.
The thing is, I didn't think there were any coolant lines in, or under the rat's nest. And I know it is not the curved coolant hose in front of the rats nest that comes from the back of the filler neck.
Where can this leak be coming from? I hate these pinhole coolant leaks. Any ideas? Which coolant hoses run through there?
Thanks for the help. I don't want to take the whole rat's nest out before I have a pretty good idea where it may be coming from. I have tried visually searching for gurgling coolant and wetness under the UIM after only removing the vacuum chamber, and can't find anything. It is deeper down than I can see with a flashlight.
Hope someone can point me in the right direction!
(oh, and I have recently changed the water pump and water pump housing gaskets so it is not coming from there)
Thanks!
The thing is, I didn't think there were any coolant lines in, or under the rat's nest. And I know it is not the curved coolant hose in front of the rats nest that comes from the back of the filler neck.
Where can this leak be coming from? I hate these pinhole coolant leaks. Any ideas? Which coolant hoses run through there?
Thanks for the help. I don't want to take the whole rat's nest out before I have a pretty good idea where it may be coming from. I have tried visually searching for gurgling coolant and wetness under the UIM after only removing the vacuum chamber, and can't find anything. It is deeper down than I can see with a flashlight.
Hope someone can point me in the right direction!
(oh, and I have recently changed the water pump and water pump housing gaskets so it is not coming from there)
Thanks!
#2
Rotary Freak
The water line from the water pump houseing goes to a metal line in the rats nest then back to rubber that goes to the bottom front of the throttle body .From there it goes through the hot wax rod back to rubber line along the back of the engine to the rear end plate . So check the hose to the rats nest in front . My mechanic said that has been one he has seen bad on several cars .
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yep, i just had to replace mine it completely ripped open and was spilling coolant everywhere. I was going non seq so it wasnt too hard for me to replace. it is best to remove the ACV to get to it. its kind of a pain to replace, you also have to remove part of the rats nest which in turn requires taking off the UIM, it really is no fun because you probably will have a good chance of popping a few solenoids if you havent done it before. Good luck man, the heater hose is 3/8 inch and it does run to the top of the throttle body.
have fun!
have fun!
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Originally posted by LAMEtHIng
yep, i just had to replace mine it completely ripped open and was spilling coolant everywhere. I was going non seq so it wasnt too hard for me to replace. it is best to remove the ACV to get to it. its kind of a pain to replace, you also have to remove part of the rats nest which in turn requires taking off the UIM, it really is no fun because you probably will have a good chance of popping a few solenoids if you havent done it before. Good luck man, the heater hose is 3/8 inch and it does run to the top of the throttle body.
have fun!
yep, i just had to replace mine it completely ripped open and was spilling coolant everywhere. I was going non seq so it wasnt too hard for me to replace. it is best to remove the ACV to get to it. its kind of a pain to replace, you also have to remove part of the rats nest which in turn requires taking off the UIM, it really is no fun because you probably will have a good chance of popping a few solenoids if you havent done it before. Good luck man, the heater hose is 3/8 inch and it does run to the top of the throttle body.
have fun!
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yep, actually. i tried numerous times and I could NOT get to it, hahah. i have good rx7 working hands too long and skinny, but yeah if you can get to it without removing a few solenoids thats obviously going to be much easier and less time consuming. i was removing all the stuff anyway so ya know, it made it easier for me.
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Originally posted by LAMEtHIng
yep, i just had to replace mine it completely ripped open and was spilling coolant everywhere. I was going non seq so it wasnt too hard for me to replace. it is best to remove the ACV to get to it. its kind of a pain to replace, you also have to remove part of the rats nest which in turn requires taking off the UIM, it really is no fun because you probably will have a good chance of popping a few solenoids if you havent done it before. Good luck man, the heater hose is 3/8 inch and it does run to the top of the throttle body.
have fun!
yep, i just had to replace mine it completely ripped open and was spilling coolant everywhere. I was going non seq so it wasnt too hard for me to replace. it is best to remove the ACV to get to it. its kind of a pain to replace, you also have to remove part of the rats nest which in turn requires taking off the UIM, it really is no fun because you probably will have a good chance of popping a few solenoids if you havent done it before. Good luck man, the heater hose is 3/8 inch and it does run to the top of the throttle body.
have fun!
John
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#8
Rotary Freak
The hose from the back of the water pump housing is short and goes to a metal tube attached to the rats nest .That tube is connected to another rubber hose that goes to the bottom front of the throttle body . The top one is common to leak but the one on the throttle body bottom will leak also .
#10
Rotary Freak
Clayne types , drill and tap and use pipe plugs . My mechanic does his customers cars this way . So there is no chance of a blown rubber plug . On his car the holes are welded up . They are welded on afew customers cars also . Rubber plug, pipe plug , welded, you get the quality you pay for . He also removes the hot wax rod unit and makes a plate to cover the holes .