LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

Leaking head gasket? Death of my car?

Thread Tools
 
Search this Thread
 
Old 04-08-08, 06:15 PM
  #31  
PureDrifter
BahHumBug

iTrader: (10)
 
PureDrifter's Avatar
 
Join Date: Aug 2004
Location: California
Posts: 23,918
Received 94 Likes on 86 Posts
Default

neo, do a compression test, or if u dont feel like pulling all the plugs, use a pressure tester for the cooling system, pressurize to 1bar or so and leave it for a few hours to see if it leaks much at all...
Old 04-08-08, 06:33 PM
  #32  
cpcc
Pit Crew
 
cpcc's Avatar
 
Join Date: Dec 2003
Location: Pennsylvania
Posts: 189
Likes: 0
Received 4 Likes on 4 Posts
Default

Sounds like your mechanic initially asked you to bend over to ppick up the 2000 Now he is asking for you to grab your ankles as he has you pick up th 4800$
Old 04-08-08, 08:53 PM
  #33  
91LS400LEX
Lead Lap
 
91LS400LEX's Avatar
 
Join Date: Nov 2007
Location: Tennessee
Posts: 401
Received 3 Likes on 3 Posts
Default

As mentioned in another thread, I would be surprised if it was the headgasket. Like Pure said, I do not think a HG would leave a puddle.

Like most have said, check for water/coolant in oil or visa-versa - oil in the coolant. Strange thing happened on my grandfathers 1990 Mazda 929 (3.0L V6). The car never overheated, but it was getting OIL in the coolant, rather than coolant in the oil. He had the HGs replaced and it happened again, but never overheated. It was actually parked because it kept leaking fuel! The faulty fuel line was replaced and replaced and replaced, but days later it would start leaking again. Strangest thing I had ever seen. Probably explains why I seen a Mazda 929 that looked like the same year as his on fire under the hood in the mall parking lot about 3 years ago. Due to the fuel leak, his car is now setting in the yard, where it has been for about 3 years now.
Old 04-09-08, 03:03 PM
  #34  
Neofate
Lexus Test Driver

iTrader: (1)
 
Neofate's Avatar
 
Join Date: Feb 2008
Location: Alabama
Posts: 1,067
Likes: 0
Received 10 Likes on 6 Posts
Default

Originally Posted by PureDrifter
neo, do a compression test, or if u dont feel like pulling all the plugs, use a pressure tester for the cooling system, pressurize to 1bar or so and leave it for a few hours to see if it leaks much at all...

I don't feel like pulling all the plugs right now -- Testing the cooling system.. Can I pressure test it from the Reservoir? I suppose so since the cap on the reservoir looks pressurized. -- Can I borrow the tester ? Or need to buy it?

As for the OP:

Anyone heard from Suneet lately? I saw this thread and haven't noticed him/her around?
Old 04-09-08, 03:25 PM
  #35  
PureDrifter
BahHumBug

iTrader: (10)
 
PureDrifter's Avatar
 
Join Date: Aug 2004
Location: California
Posts: 23,918
Received 94 Likes on 86 Posts
Default

yea u can borrow it, i posted in one of the other threads.


and suneet is just busy with work and life these days, worry not, he'll be back eventually
Old 04-09-08, 03:27 PM
  #36  
Neofate
Lexus Test Driver

iTrader: (1)
 
Neofate's Avatar
 
Join Date: Feb 2008
Location: Alabama
Posts: 1,067
Likes: 0
Received 10 Likes on 6 Posts
Default

Ok thanks.. Just to clarify -- I can put the pressure on the reservoir port right?
Old 04-09-08, 03:40 PM
  #37  
PureDrifter
BahHumBug

iTrader: (10)
 
PureDrifter's Avatar
 
Join Date: Aug 2004
Location: California
Posts: 23,918
Received 94 Likes on 86 Posts
Default

Originally Posted by Neofate
Ok thanks.. Just to clarify -- I can put the pressure on the reservoir port right?
yes .
Old 04-09-08, 09:57 PM
  #38  
Suneet
Lexus Champion
Thread Starter
 
Suneet's Avatar
 
Join Date: Mar 2002
Location: California
Posts: 1,833
Likes: 0
Received 4 Likes on 2 Posts
Default

Hey, sorry.. I've been super busy with work. I still haven't really made any progress with my issue.. I just monitor the coolant fluid and continue to drive it normally. So far, no issues, or no overheating.

It hasn't been warm at all here yet, so I can't tell if the car is releasing white smoke, as it's always cold. I'm waiting for a sunny warm day to figure that one out. I also need to figure out what is puddling underneath the car-- I think its just condensation, but sometimes the puddles are really big.

So where does one get one of these exhaust gas in the coolant testers from?
Old 04-10-08, 05:16 AM
  #39  
19psi
Lexus Champion
 
19psi's Avatar
 
Join Date: Feb 2007
Location: Lou-Evil KY
Posts: 2,489
Likes: 0
Received 3 Likes on 3 Posts
Default

Originally Posted by Neofate
Ok thanks.. Just to clarify -- I can put the pressure on the reservoir port right?
well......if yo do that, you'll basically be testing the cooling system, not the HG. if you do have a leaking HG, with pressure from the opposite side (cooling system) and not the combustion chamber, the leak may well seal itself up. think of a one way flap....
also, you'd have to have some damn good ears to hear any air coming out of either the intake or exhaust, which si what you have to listen for if y ou're going to pressurize the cooling system to check for a leaking HG. thats' why SOP for HG testing is the leakdown test. you can actually get one for cheap if you already have an air compressor to use with it.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Realmsteel
IS - 2nd Gen (2006-2013)
7
09-05-18 10:55 AM
Brutus213
GS - 3rd Gen (2006-2011)
2
07-11-17 11:38 PM
Gomer1
RX - 1st Gen (1999-2003)
2
09-26-10 07:41 AM
Chucez
GS - 1st Gen (1993-1997)
2
03-01-10 08:28 PM
scoarer
Performance & Maintenance
7
01-20-06 03:15 PM



Quick Reply: Leaking head gasket? Death of my car?



All times are GMT -7. The time now is 11:19 AM.