Losing Coolant

Tiny
HONDAACCORDFAN
  • MEMBER
  • 1992 HONDA ACCORD
  • 4 CYL
  • FWD
  • MANUAL
  • 150,000 MILES
My Honda has been in and out of the shop for the past several months with a mysterious coolant leak. All the coolant hoses have been replaced and a new radiator installed. The system has passed a pressure test yet if still continues to loose coolant. I have to fill the radiator at least once a week to keep adequate coolant in it. Any suggestions as to where the coolant might be going?
Was this
answer
helpful?
Yes
No
Thursday, January 2nd, 2020 AT 8:11 PM (Merged)
Tiny
KHLOW2008
  • EXPERT
Hi hondaaccordfan,

Is the recovery tank depleting as well?

Have you checked the heater core?
Was this
answer
helpful?
Yes
No
Thursday, January 2nd, 2020 AT 8:11 PM (Merged)
Tiny
HONDAACCORDFAN
  • MEMBER
The recovery tank isn't being emptied. There's no sign of a water leak inside the car, the carpet doesn't get wet and there's no other sign of leakage. The heater does work.
Was this
answer
helpful?
Yes
No
Thursday, January 2nd, 2020 AT 8:11 PM (Merged)
Tiny
KHLOW2008
  • EXPERT
If the recovery tank is not being emptied, probable causes are :

1. A bad head gasket. The coolant is being pushed to the recovery tank due to the pressure building up.

2. A bad radiator cap. Coolant is sent to the recovery tank and air is being drawn in instead of coolant from the recovery tank.

3. Leakage between the recovery tank and radiator hose. Same reason as 2 above.
Was this
answer
helpful?
Yes
No
Thursday, January 2nd, 2020 AT 8:11 PM (Merged)
Tiny
RBLESS84
  • MEMBER
  • 1990 HONDA ACCORD
  • 4 CYL
  • FWD
  • MANUAL
  • 113,000 MILES
So, I replaced my valve cover gasket. Easy job to do once I took it all apart and looked at it. I had to actually pry it off with a prybar and scrape some of the old gasket off(made sure I didn't leave debris in there). However, I now have an insanely slow leak of coolant where the top radiator hose connects to the engine directly below and to the left of the valve cover.

The leak is coming from where it connects to the engine, not a hose(replaced hoses and upgraded radiator in '07).

I'm just looking for a name for this part, and perhaps how serious this issue is. I'm still letting my rtv cure so I haven't started the car up yet to see if I start puffin white smoke out of my exhaust. Should I refrain from testing out my new valve cover gasket until I resolve this slight leak?

EDIT:
I have discovered this is my "Water outlet gasket". Does this indicate water pump failure, or did I perhaps crack the very old gasket by hammering and prying on the valve cover? My newer question in a nutshell is this: How do I know if anything more than a replacement gasket is the culprit?
Was this
answer
helpful?
Yes
No
Thursday, January 2nd, 2020 AT 8:11 PM (Merged)
Tiny
MATHIASO
  • MEMBER
Either it is the thermostat housing outlet.Because the top radiator hose is always connected to the thermostat housing, the lower radiator hose is connected to the water pump.

Thermostat housing outlet.
Use a pair of pliers to compress the spring clamp, then slide it up the hose and disconnect the hose from the housing.


https://www.2carpros.com/forum/automotive_pictures/46384_0900c1528005f41e_1.jpg



Remove the nuts/bolts securing the thermostat housing ...


https://www.2carpros.com/forum/automotive_pictures/46384_0900c1528005f41e_2.jpg



then remove the thermostat housing..


https://www.2carpros.com/forum/automotive_pictures/46384_0900c1528005f41e_3.jpg



Once the housing is removed, the thermostat can be removed from the engine


https://www.2carpros.com/forum/automotive_pictures/46384_0900c1528005f41e_4.jpg



Using a putty knife, clean the gasket mounting surfaces.

If the thermostat is equipped with a pin valve, be sure to install the thermostat with the pin facing upward.

If you think it is your water pump, here is the location


https://www.2carpros.com/forum/automotive_pictures/46384_0900c1528005f452_1.jpg



Inspect for signs of seal leakage or deterioration.
Note: small amount of weeping from the bleed hole is normal.
(see diagram).
Was this
answer
helpful?
Yes
No
Thursday, January 2nd, 2020 AT 8:11 PM (Merged)
Tiny
KIR
  • MEMBER
  • HONDA ACCORD
Honda Accord '97 LX, 155K; radiator coolant level is droping every 3 motnhs. I never observe any laek on ground or on the radiator but I feel its just depositing on the radiator rest-base.
What will be the real problem?
Was this
answer
helpful?
Yes
No
Thursday, January 2nd, 2020 AT 8:11 PM (Merged)
Tiny
BRUCE HUNT
  • EXPERT
From experience with Honda that is the $100 question. Where is the coolant going? Obviously it is going some where slowly. It is either leaking but not all the time and possibly only when the engine is very warm or the best answer is that the engine consuming it. This is a tough one to diagnose so watch for times of consumption, watch for white exhaust, and watch the ground under the vehicle especially after a long drive.
Was this
answer
helpful?
Yes
No
Thursday, January 2nd, 2020 AT 8:11 PM (Merged)
Tiny
KODI
  • MEMBER
  • 1992 HONDA ACCORD
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 130,000 MILES
Car mechanically good but recently a nasty smell is finding its way into cabin. Can only describe it as a cross between rotten egg gas and urine. Thought is was coolant dripping onto exhaust system. Has a burning smell to it. Sulphurish.
Local mechanic has pulled cat converter apart and says it is in good shape. He thinks it may be excess fuel going thru exhaust unburnt. I am not convinced. I thought smell was originating from under car but not sure. Most noticeable after you start the car and go to drive off - even with windows fully up and intenal vents on recycle. Not noticeable driving along. Mystifed at what is source of smell and how it gets into car (am very careful about keeping windows up before car is started).

No wet carpet, no coolant loss, oil is clean and free of coolant. Brakes work ok. No loss of engine power. Fuel economy seems ok. Possible heater prob? Or is is that cat converter or leaky exhaust? It is nasty smell that gets to back of throat quickly.

Your advice appreciated.
Was this
answer
helpful?
Yes
No
Thursday, January 2nd, 2020 AT 8:11 PM (Merged)
Tiny
TED-E-DEE
  • MEMBER
You mentioned you thought coolant dripping on exaust, if it smells like coolant you can ck. Under pass. Compartment dash to see if there is coolant dripping from heater core. Even if you don't notice a coolant loss, could be a small leak. Also ck. For debris inside heater blower motor case. Have A/C? If not have A/C, it will be easy to ck. By pulling vent out b-tween blower & heater core. I can tell you I have removed hundreds of mouse nests from this area. They seem to Like Hondas &Toyotas ! There have been several cases of Cat. Converters on Hondas also, that stands out to me especially when you mention "rotten egg" smell. I'm curious how your tech can tell by looking that it is not coming from converter. Could just be something I don't know. How far appart was he able to take it? Good Luck ! Ted-e-d P.S, don't rule out something falling down defroster duct.
Was this
answer
helpful?
Yes
No
Thursday, January 2nd, 2020 AT 8:11 PM (Merged)
Tiny
TNELLY1300
  • MEMBER
  • 1991 HONDA ACCORD
  • 4 CYL
  • FWD
  • MANUAL
  • 160,000 MILES
1991 Honda Accord LX (5 spd stick) - Hit dog, replaced radiator - before replacing used radiator stop leak (black pellet type). After replacing, everything fine for about 1-2 wks. Then idle started reving up & down at start & temp gauge goes up after about 10 min of operation. Heat will not work initially but kicks in after about 10-15 mins. - Chk fluid level = empty or close to it, fill up & all is fine for about 2 days max. No visible leaks while running but after shut down there is a big puddle under drivers side, just inside of wheel. Serviced up fluid yesterday, started & put up on lift for 20-25 min. = No visible leaking? Shut down, left on lift overnight - this morning fluid everywhere under drivers front - just inside wheel. Found where leaking - just above CV axle there is an elongated silver housing with a black plastic cover on left side (wheel side) that has a belt & pulleys running on the left of that (towards wheel) - fluid is steadily dripping out of a small hole on the edge of that silver housing. It looks like maybe a plug should be there or maybe it's threaded for a bolt but there is fluid coming out of that hole? I'm assuming this is the water pump? Have NO idea why fluid is coming out there or how to fix? PLEASE help.
Was this
answer
helpful?
Yes
No
Thursday, January 2nd, 2020 AT 8:12 PM (Merged)
Tiny
OBXAUTOMEDIC
  • EXPERT
Hello,

Ok, yes sound like the water pump. The hole you are speaking of is a weep hole there is a rubber diaphram behind there, when it goes bad it starts to leak. So you will need to replace the Water Pump.
The water pump is run by the Timing Belt and I would Highly Recommend replacing all timing components as well.
Was this
answer
helpful?
Yes
No
+1
Thursday, January 2nd, 2020 AT 8:12 PM (Merged)
Tiny
OBXAUTOMEDIC
  • EXPERT
Check out this Youtube Video....

http://www.youtube.com/watch?v=KtJQvZ8UcAQ

Was this
answer
helpful?
Yes
No
Thursday, January 2nd, 2020 AT 8:12 PM (Merged)

Please login or register to post a reply.

Sponsored links