Hey,
just purchased a 2013 xjl from the salvage auction and after finally finishing the body repairs I realized the car starts to smoke white smoke from the exhaust pipe and it smells like a coolant combustion leak. I returned the supercharged cooler line to make sure the supercharged cooler is not leaking and it still smoked. After the car gets to operating temperature it starts to misfire in multiple cylinders. Any help or comments would be appreciated. I will start pulling the motor apart next week.

 

Aslan, before you crack the block, I would make sure that you can get the parts that you think you need. Parts for the engine seem to be hard to get your hands on Don't want to see you reach a point where you can't go forward and you can't go backwards.

I would start with doing a pressure test of all 6 cylinders. This will atleast tell you the side that has the issue. Just pulling the plugs may give you an idea of which side is your problem child. So, that may save you some work in the long run.

Once you start pulling the engine apart, probably best to account for replacing all the small plastic coolant tubing right from the get go as this will be very brittle and what you don't break trying to get it apart will be a timebomb waiting to fail in the future.

The timing chains should have discolored links in them. These should match up to points on the camshaft. It may be a good idea to initially roll the engine to the point that these marks are made up on all cams/crankshaft to make final installation easier. Doing it at the beginning will help ensure you don't run into any clearance issues later.

 

Thanks for your advice. Do you know if i need special timing tools and where can i get it?

 

Aslan, this is what I will tell you from having worked on other cars with similar set ups. Must you have the tools. NO!!!! But, I will tell you what, unless you have about 5 hands, having those tools is very handy. I had to get creative in ways to hold stuff in certain positions. As for getting your hands on the tools, your local auto parts store should allow you to rent them. Atleast near me, you put down a deposit on the tool (normally the price of the tool) and when you return the tool in good shape, you get all that money back. Otherwise, you are having to figure out ways to hold both camshafts in position as you put the chain on and then once you have things as you need there, you need to keep them pretty much still to allow you to install the timing chain tensioners.

 

In addition to the good advice from Thermo, check to see if the main issue for the misfire(s) and smoking isn't a stuck fuel injector.