Engine ticking on cold start only
#1
10-02-2008, 07:52 AM
Engine ticking on cold start only
Hello guys, and maybe gals,
I just bought a 2001 Jaguar XJR with 83000m - I have noticed that there is a ticking noise upon cold starts then after 3 or 4 minutes the noise goes away and the car runs like a dream. I have read some dreaded stories about tensioners and I was just wondering if the tensioners were on their way out would the noise be constant and not just limited to cold starts?
I also have a nocking sound coming from the back of the car - very annoying indeed. I've had the spare wheel out, checked the silencer mountings and they seem to be fine. Any ideas??
I just bought a 2001 Jaguar XJR with 83000m - I have noticed that there is a ticking noise upon cold starts then after 3 or 4 minutes the noise goes away and the car runs like a dream. I have read some dreaded stories about tensioners and I was just wondering if the tensioners were on their way out would the noise be constant and not just limited to cold starts?
I also have a nocking sound coming from the back of the car - very annoying indeed. I've had the spare wheel out, checked the silencer mountings and they seem to be fine. Any ideas??
#3
10-02-2008, 12:03 PM
RE: Engine ticking on cold start only
It sounds to me like you have a case of "engine morning sickness", I think the engine noise you are hearing is from your lifters. When engines get some miles on them they often get this. What kind of oil are you using? Is it what is called for in the owners manual? Is it a full Synthetic? You may want to start changing the oil and filter a little more often to try and clean up the inside of your engine.
There is a product made by Chevron, I think it is called something like Techron that you put in your gas, this works great at cleaning the buildup of residue from the valve stems, and combustion areas. I'm not sure but I think it also cleans injectors. I have used it in the past and it works great! Clean injectors, a clean throttle body, a clean PVC system, a smooth running engine will help keep the engine insides cleaner, and oil clean longer.
Check and make sure the engine is running at the right temperature, too cold is just as bad as too warm. Too cold and it is more apt to gunk up the engine insides. Too hot, when the engine is shut off, the oil is more likely to drain down from the lifters etc where you would like it to stay. Have you checked the outside of the radiator, it may be full of bug residue. You can check the temp with a hand held infrared thermometer.
After an oil change, and when it is running well, you may want to take it out on the open road and blow the cobwebs out of it. After all it is a Jaguar, and baby they were born to run!
There is a product made by Chevron, I think it is called something like Techron that you put in your gas, this works great at cleaning the buildup of residue from the valve stems, and combustion areas. I'm not sure but I think it also cleans injectors. I have used it in the past and it works great! Clean injectors, a clean throttle body, a clean PVC system, a smooth running engine will help keep the engine insides cleaner, and oil clean longer.
Check and make sure the engine is running at the right temperature, too cold is just as bad as too warm. Too cold and it is more apt to gunk up the engine insides. Too hot, when the engine is shut off, the oil is more likely to drain down from the lifters etc where you would like it to stay. Have you checked the outside of the radiator, it may be full of bug residue. You can check the temp with a hand held infrared thermometer.
After an oil change, and when it is running well, you may want to take it out on the open road and blow the cobwebs out of it. After all it is a Jaguar, and baby they were born to run!
#4
10-02-2008, 12:15 PM
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