Has anyone had any experience with Blueflame?
They do a system for the XJ8 for £580 plus £10 postage. It would be the system on ebay but with the centre box fitted. I've no worries about the quality but I don't want it to be intrusive in the car?
Thanks
Phill
Blueflame exhausts?
Blueflame
Chewy make sure the connection to the downpipe is easy....if the system is stainless and the downpipe is cast there could be a marrying up problem...........i use a company who are a national franchise called
LONGLIFE EXHAUSTS se if they are local to you and give them a call for a quote fitted and garunteed for life........Joe
LONGLIFE EXHAUSTS se if they are local to you and give them a call for a quote fitted and garunteed for life........Joe
A long standing fault
A member has appealed for information on an exhaust? fault......
or could it just be a sensor fault. if anyone can throw a light on the subject here it is..................
Hi Joe,
I have had a growing problem with the emissions of my XJ8 for MOT purposes over the last three years and wonder if anybody else has had a similar problem?
The car is a 1999 3.2 XJ8, which in 2001 was fitted with a new engine under warranty.
On the previous two MOTs the car would not pass the emissions test until the engine was very hot. It was necessary to drive the car in 'D2' at high revs (5000+) for ten to fifteen minutes to achieve the required temperature, where upon it passed the emissions test comfortably. However, this year it failed the MOT (July) emissions test. I was advised that the problem was likely to be a sensor in the exhaust system or the catalytic converters.
The car was taken to a specialist tuning firm, who diagnosed four defective exhaust sensors, which they replaced, and the car then passed the MOT. I was advised that it was necessary, from time to time, with such a large engined car, to give the engine/exhaust system a good 'clear out' by driving the car at high revs for about fifteen minutes to get the catalytic converters hot enough to burn off any build up of deposits which could effect their efficiency and consequently the emissions.
However, the vehicle handbook states that excessive heat can damage the catalytic converters. I am therefore confused over the correct course of action to take.
Any advice on this subject would be much appreciated.
Thanks,
Ian Walker (Membership No. 60993)
Anyone had the actual fault to start with, or if anyone has an answer please help ........Joe
or could it just be a sensor fault. if anyone can throw a light on the subject here it is..................
Hi Joe,
I have had a growing problem with the emissions of my XJ8 for MOT purposes over the last three years and wonder if anybody else has had a similar problem?
The car is a 1999 3.2 XJ8, which in 2001 was fitted with a new engine under warranty.
On the previous two MOTs the car would not pass the emissions test until the engine was very hot. It was necessary to drive the car in 'D2' at high revs (5000+) for ten to fifteen minutes to achieve the required temperature, where upon it passed the emissions test comfortably. However, this year it failed the MOT (July) emissions test. I was advised that the problem was likely to be a sensor in the exhaust system or the catalytic converters.
The car was taken to a specialist tuning firm, who diagnosed four defective exhaust sensors, which they replaced, and the car then passed the MOT. I was advised that it was necessary, from time to time, with such a large engined car, to give the engine/exhaust system a good 'clear out' by driving the car at high revs for about fifteen minutes to get the catalytic converters hot enough to burn off any build up of deposits which could effect their efficiency and consequently the emissions.
However, the vehicle handbook states that excessive heat can damage the catalytic converters. I am therefore confused over the correct course of action to take.
Any advice on this subject would be much appreciated.
Thanks,
Ian Walker (Membership No. 60993)
Anyone had the actual fault to start with, or if anyone has an answer please help ........Joe
Emissions
If the vehicle is only used for short journeys (less than 5 miles) on a daily basis then it is good practice to give the vehicle a high speed run every now and again to get rid of some of the carbon deposits. This is due to the catalytic converter never getting up to its proper operating temperature for long periods (the catalytic converters only work once they are hot).
Occasional use of a fuel system cleaner will often help improve vehicle emissions (make sure the cleaner that you use states that it is suitable for use with catalytic converters).
It is unusual for all four lambda sensors to fail together. Normally additional diagnostics would be required to find the root cause of the fault which may require a datalogger to be fitted to the vehicle to monitor the vehicles sensors over a full drive cycle. (Lambda sensor failure can be as an effect of another fault rather than the cause). The first thing that I would do is take all of the spark plugs out and inspect them (poor spark causing unburnt fuel to enter the exhaust system) as well as checking the air filter and its associated ducting.
Regards,
David
Occasional use of a fuel system cleaner will often help improve vehicle emissions (make sure the cleaner that you use states that it is suitable for use with catalytic converters).
It is unusual for all four lambda sensors to fail together. Normally additional diagnostics would be required to find the root cause of the fault which may require a datalogger to be fitted to the vehicle to monitor the vehicles sensors over a full drive cycle. (Lambda sensor failure can be as an effect of another fault rather than the cause). The first thing that I would do is take all of the spark plugs out and inspect them (poor spark causing unburnt fuel to enter the exhaust system) as well as checking the air filter and its associated ducting.
Regards,
David
exhaust readings
It used to be good to give the car a run of ten to twenty miles down a motorway at high speed 70mph?.....erm ok.... so that when you finally gave the car to the MOT guy he had a better chance of getting the correct readings for the omissions......but nowa days you arnt always sure of being the next in the line for your MOT and the car will be stood for a while in line.....making the run down the motorway obsolete.
So if you are due for MOT ...try for the previuos week to use the car more often with the cats working a bit more then it should give you a better chance at the test. ........maybe......Joe
So if you are due for MOT ...try for the previuos week to use the car more often with the cats working a bit more then it should give you a better chance at the test. ........maybe......Joe
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