collant loss 1990 XJS

Robert what body is the 58? i had a coupe (seville) I thought it was the most beautiful of all the years ( I also had a 53 Biarritz and 56 biarritz and 56 Seville.

Again thanks to everyone for the information. I haven't had a chance to work on the Jag for several days as I am prepping my 58
Cad for a car tour in March and It hasn't been driven for 18 years. I will get back to the Jag this week end.

Bob Smits
College Station, Texas

Again thanks to everyone for the information. I haven't had a chance to work on the Jag for several days as I am prepping my 58
Cad for a car tour in March and It hasn't been driven for 18 years. I will get back to the Jag this week end.

Bob Smits
College Station, Texas

Art, would suggest that you read your messages in your Gmail account, and respond there.

Chad, my '88 XJS V12 had the bleeder at the top of the left side radiator tank....and so did an Ser III V12 Sedan I worked on recently.

Well, not sure that I would call it a "valve". Its a plug that I remove to bleed the system.....

Cheers
DD

William, on the later cars, the bleeder is located in the cross over pipe, at the place where the rad. cap is attached. Below the flange for the rad. cap is a connection for the bleed hose. In the connection is a bleeder valve, well there is suppose to be one there. Assuming it is there, that is how the system bleeds. This also assumes that the PO installed the correct T/stats with the bleeder hole at the 12 o'clock position.

Then it has bleed seperate bleed hoses. I think we used to break open one of them at the highest point but it may not even be necessary.

William, the bleed valve on top of the radiator, was discontinued around 1978 or so.
Chadbourn Bolles
803 532 6257

it appears that you do not have a coolant leak but just a sensor/level problem. Your car is a little tricky to fill. This is the procedure; Fill the system at the expansion tank or radiator until the level in the Exp tank is at the cold (lower) mark. Now, fit the expansion tank cap & continue filling at the radiator until the radiator is full. You can then bleed out the radiator from the bleed valve on top of the radiator passenger side. This should take care of your problem. ps; Do not remove the exp tank cap again, all top-ups have to be via the radiator cap!

Thanks for the information. There is no coolant on the carpets and I will re-bleed the system. If this doesn't solve the problem I will check on the possibility of a head gasket leak although I would think. there would be evidence of air bubbles in the coolant. I live in College Station TX which is about 4 hours from Dallas and 1.5 hours from Houston and Austin. Does anyone know of a reputable Jag mechanic in the area they would recommend? Thanks, Bob

Spots in pass. side floor. Is there anti freeze in it, or does is smell of anti freeze? If answer is yes, then look to heater core leak, Have fun replacing it:):):)
If no anti freeze smell, then, and it depends on how much moisture is there, it may be a windshield leak.
Chadbourn Bolles
803 532 6257

Chad and George,

Thank you very much for the input. I will check the sensor. Any input in regards to the 'spots' on the passenger side floor mat?

Martin, I have had more XJS cars, than I want to remember, and always had one problem.
Even on my 95 XJS V12 Coupe the darn low coolant light comes on for no reason, every once in awhile.
That might be your problem. My suggestion would be once the light comes on, when you get a chance to, stop car
and let it cool down. Cool enough for you to remove the rad. cap. If water level is where it should be, then I would suspect
the sender for the light.
Respectfully
Chadbourn Bolles
803 532 6257

Martin you might simply have a bad sensor for the water level.

George,
I might have a heater core issue now that I have read your comment on this thread. I have noticed 'spots' on my passenger side floor mats and don't know where they are coming from. I do have an A/C leak somewhere. Can that be related? The coolant level stays pretty full but the light does come on briefly when I first start up the car and it is cold outside

What do you think?

Martin
1995 XJS Convertible 4.0

Robert your post led me to believe you had topped the system up and each time you drive it is low. If that is the case the coolant is going somewhere and if it is not visible it must be going out the pipes---unless your floor is full of coolant (leaking heater core). Good hunting.

Art--please leave me out of that situation. While he is a friend I have no Idea of what you two agreed to and have had zero involvement in the project. I do not want to be connected to it in any manner. I will however call him and ask if he is aware you have posted this in public and suggest you all (southern requirement) work it out in private where it started. Best of luck.

George do you know a DECENT lawyer down there , before your friend looses the entire engine he was supposed to build for me "CHEEP"

you have to bleed all the air out of the system, topping up is not enough, Art 604 465 7244

If you see no leaks then you best check that the head(s) gasket is not allowing it to go out the exhaust. There is a simple check any good shop should have. This situation is possible and you would see no leak and see no water in the oil.