Losing coolant
#1
Losing coolant
I am losing coolant in my 2013 XJL 5 liter supercharged. There are no visible leaks, it is not losing a lot of coolant but I am topping it off every few weeks. Took it to my mechanic and he run pressure tests and believes it is a head gasket. Has anyone run into this problem? How big of a job to repair?
The following users liked this post:
mfrizell (08-11-2020)
#2
A head gasket is a fairly large job. The supercharger and everything around the head has to come off. If that is the problem make them replace all the plastic tubes in that area as well. A bad head gasket will look like a slight loss of pressure, about 2 PSI, and then will hold steady from then on. Your filling the cylinder with antifreeze and when it fills up no more pressure will be lost. A slow steady drop that doesn't stop is a leak somewhere and keep looking for a puddle. If it doesn't drop and doesn't leak anywhere replace the radiator cap. I've had head gaskets done before for about $1,200 on a Pontiac v6. At least double that for a supercharged Jaguar I would suspect. That is if they take it to a machine shop and have the head shaved to be flat again. Aluminum warps and that's why you get a leak. Getting on it a lot will stress the aluminum and over time will blow a gasket. Depending on the mileage you might want to have them look at the timing chain guides as well.
#3
Join Date: Jan 2012
Location: Newport Beach, California
Posts: 5,576
Received 2,579 Likes
on
1,784 Posts
#4
#5
#6
#7
Thread
Thread Starter
Forum
Replies
Last Post
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)