so the XKR is still giving me grief and will not idle smoothly, and still coming up with restricted performance! so my mission today was to swap out the fuel filter, but the weather had other ideas.
My question to you all is what should i do with the car next, should i continue with the engine to get to the bottom of the problem, or should i get it into the barn and begin the fun restoration of the whole car?
Please let me know in the comments section below.
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Hello simon , its so frustrating with an on going problem like this , like you im no trained mechanic but my gut feeling on this is fuel related , while the tank is empty add fuel additive , fill it up with fuel and let it do its job , stay with the engine issues first . Hope you get it sorted mate .
Hi Simon, I would get the engine running properly first. It's a tough one, can your code reader check live data. It might throw up that it's running lean which would indicate an air leak somewhere
Hi Simon, the filter should be installed very carefully as the aluminum thread is quickly destroyed. Be careful when screwing. I had it done in September, good luck .
Just below the supercharger fill plug is a small rubber vacuum pipe. Check it's not split.
Check the air intake where it goes into throttle body. Can often pinch the gasket and allow air in after the MAF causing idle issues , especially since you had it off. Love the videos so keep it up!
I don't know whether this might help but we had a running poorly, and occasional limp home, 4.2 X150. The ODB system is obviously more advanced on the X150 than the X100 and a scan kept giving two problems, Low Fuel Pressure and High Fuel Pressure which seems daft. I changed the battery which made no difference so I thought about the Fuel Pressure Sensor in the fuel rail under the bonnet.
I was struggling to see how it could read both low and high but I then realised that it is not actually a fuel pressure sensor but is a sensor and a regulator. I believe the same sensor/regulator is fitted to the X100. I decided to order both the sensor/regulator and a fuel filter, total cost £90 which is not too bad. First thing I did was change the sensor as that is a simple, 15 minute, job. The car is now fine again!
I will change the filter as I've bought it but I'll put it up on the lift for that as I had a quick look underneath and could see that it will be a difficult job with the car on the ground.
Have you cleaned the air flow sensor? Check all the vacuum lines too.