| Author |
Message |
    
Mark Townsend
| | Posted on Wednesday, July 10, 2002 - 03:50 pm: | 
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Hello All,
I have a coolant mystery with my 96 Disco.
I'm finding a small (Couple of drops) coolant leak coming from the back of the engine.
A small amount is pooling on the center engine saddle at the back under the intake manifold. I checked the front hoses's and thermostats thinking it was leaking here and running towards the back but not the case.
Doesn't happen often or seem to happen when driving. It appears on the floor once and a while after sitting over night. I have searched to no end and cannot find the leak.
Any ideas??????
Thanks |
Joe Still
| | Posted on Wednesday, July 10, 2002 - 05:21 pm: |
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Got the same thing on a 95. Have read before about coolant lines at the fire wall but haven't found it myself. Hope someone smart picks up this thread. |
Michael Noe (Noee)
| | Posted on Wednesday, July 10, 2002 - 05:22 pm: |
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Intake manifold gasket, maybe? Just had mine replaced, had the same symptoms. Some have recommend torquing down on the bolts. |
Clif Ashley (Cta586)
| | Posted on Wednesday, July 10, 2002 - 05:25 pm: |
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You could have a problem with your intake manifold gasket. I had coolant coming from there, except for it was by the gallon, not the drop, haha. The gasket was totally blown. I would imagine that you could have a minute tear or gap in yours that could cause just a small leak. That is just a shot in the dark. Thanks. |
Clif Ashley (Cta586)
| | Posted on Wednesday, July 10, 2002 - 05:25 pm: |
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You beat me to it, Michael. Haha |
Mark Townsend
| | Posted on Wednesday, July 10, 2002 - 06:06 pm: |
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Thanks for your input guy's but are you sure there is coolant passages between the intake manifold? If the leak is here then it would also be sucked into the cylinder heads from the inside and I'm sure the problem would be more severe or noticable.
Head Gasket, ya but how does it end up on top of the engine?
As far as the hoses on the firewall, checked those and thier fine????????
I'm heading out on 2000K holiday and have a bad feeling about this. Joe if your still following this thread how long in Kil/Miles have you had this problem and is it getting worse?
If anyone has any other ideas please keep them coming.
Thanks in advance. |
Mark roverman
| | Posted on Wednesday, July 10, 2002 - 10:12 pm: |
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I had a problem like that. Coolant was leaking behind the engine. All i did was tighten all the clamp on the hose. No more leaks after that.
Mark |
Fred Phillips
| | Posted on Wednesday, July 10, 2002 - 10:59 pm: |
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Hi, This is my first post. I bought a 94 Discovery (113K miles) in May and noticed a few drops of coolant from the rear of the engine when parked overnight. I drove from New Hampshire to Maryland and the leak got progressively worse (noticed steam from coolant leaking on exhaust when I stopped for gas in New Jersey. The next morning in Conowingo Md I added about 1/2 gal of coolant before heading to DC to tow a car back to Md. On the trip back from DC the Discovery overheated due to excessive loss of coolant and I had to stop about every 50 miles to add coolant. Finally made it back to my friends house in Conowingo and decided to find the source of the leak the next day before heading back to New Hampshire. It was the valley gasket between the intake manifold and the block. It is a metal gasket with a coating on either side. The coating was gone near the rear of the engine, the bolts were also loose at the rear. Since I couldn't get a replacement on Saturday, I coated the metal with silicone rubber (sensor safe) and reassembled. No more leaks in the last 3000 miles but I do intend to replace the gasket before the end of the summer.
Sorry for rambling but hope that this helps you. By the way, I consider myself very lucky that I did not do any damage to the engine. If I were you I would replace the gasket prior to the trip. As a minimum, check the tightness of the bolts. If you disassemble enough to get down to the bolts you might as well replace the gasket. There are also a couple of rubber seals that should be replaced at the same time that will prevent engine oil from leaking from out of the block.
Good luck |
Mark
| | Posted on Thursday, July 11, 2002 - 01:31 pm: |
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Thanks for the input Fred. I just checked the bolts on the intake manifold and the top engine valley front and back center.
You were right a few were at least 3/4's of a turn loose.
I snugged things up and hope this will be a fix for now.
This forum is a great resource and thank you all for your input. |
Joe Still
| | Posted on Monday, July 15, 2002 - 01:16 pm: |
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Mark: Sorry it took a while to get back. I've had the problem for 3 mos. It is sporadic. Sometimes leak, sometimes no. Net result is I had trouble maintaining temp on a hot Alabama day and only wind speed thru radiiator would keep down. I added 1 gallon of coolant and overheating(well just hotter than normal) problem went away completly (for a time). Since then I've put a new resorvoir cap on from another conversation as the 95 has a platic tank and is subject to fail in overpressurization. I've not seen coolant since (only been a week or so). I've got a gallon of 50/50 in the back for the balance of the summer.
Good luck on your trip! |
Joe Still
| | Posted on Tuesday, August 06, 2002 - 07:45 am: |
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Mark, if your still following my expansion tank blew the other day. AC quit working for a few minutes- then I noticed the temp gage nearly maxed. I just had it towed after running heater full blast and letting radiator fans run till they quit.
Atlantic British says do the main hose from the tank too- they sell a lot of them after the new tanks are installed.
Joe |
pjkbrit
| | Posted on Tuesday, August 06, 2002 - 09:20 am: |
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Yep...it'll be the valley pan gasket...make sure you use a composite type gasket to replace the metal one...they seal really easily and won't fail again...do NOT overtighten the inlet manifold bolts either...these are all aluminium threads!!!!! Easy to strip.
Pete |
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