I am trying remove the inlet manifold and the rocker cover. The rocker cover should be straight forward but alas the hex-bolts are made of cheap metal and tend rust onto the cover and round if you use too much force. Now I need to remove the inlet manifold but two of the nuts are almost impossible to access. Any ideas?
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Hi,
You may have to use small socket set with wobble bar and extensions. Give the bolts a good soaking in Plusgas release spray and leave overnight if possible.
Chances are the inlet manifold bolts were fitted before the engine was installed in the car at the factory. You should be able to reach them using a small but high quality socket set. Dont use cheap tools as high torque applied to a cheap small socket or ratchet will break it.
Cheaper materials are one cause of seized bolts but Jaguar also suffer from inlet manifold long bolts seizing in the head due to steel bolt reacting with aluminium alloy cylinder head.
When replacing these bolts, coat thread and under bolt head with copper grease - just in case you have to remove in the future.
Olaf
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Hi Olaf,
You were right a wobble bar was needed for one of them and I had enough room for a 12 mm spanner to crack the other (and my hand). I found that part of the loom was attached to the inlet manifold and that the knock sensor is threaded through the manifold. So quite a tricky! I will buy new bolts and coat them with copper slip - good call.
Never seen such a coked up inlet manifold - EGR valve was replaced but the pipe was solid and took a bit of cleaning, as will the inlet manifold.
All I need to do now is carefully chisel a notch into the last rocker cover bolt, and I can set about checking and adjusting the valve clearances. They had better be out ? all this because the LTFT is -100% i.e. running very rich.
I noticed that one of the injectors looks different and I thought I would pressure test them on the car. If I plug in the fuel rail and switch the ignition on I should not see any of the injectors leaking, if I do then that could also be causing the car to run rich.
I must admit that the car has been fine for 5 years and then I get an EGR failure and then noticed the fuel trim and the rest is skinned knuckles and lots of blood.
Cheers for the advice.
Eddie
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