I find it quite amusing that you want detailed instructions with out providing any detailed information. Do you think all engines are the same? It is one thing being a cheapskate, but another being a lazy one.
Frankly, I won't waste my time. go buy a Chilton's Manual or visit Alldata.com for your job.
Rear plug on your boat???
remove intake manifold.
jaguar 2001 Lower Engine Intake Manifold Gasket
No.
For the manifold see link below for detailed info on the class action settlement and detailed DIY instructions... http://www.autoclinix.com/Manifold.htm Is the intake cracked? Is it a 4.6L? If so, a recent class action settlement extends the warranty, on the intake, to 70,000 miles. Don't replace with OEM manifold.
Pretty straight forward. You must remove the intake manifold in order to replace the gasket.
I'm not sure what you mean by a "diagram" but you can find detailed info on how to replace the intake manifold at the linke below... http://www.autoclinix.com/Manifold.htm Hope this helps.
www.trailvoy.com
diferential pressure sensor intake manifold plausibility
Yes, change both of them.
What engine? and ensure it is a bad gasket, not an intake plentum.
No absolutely not...
take it to a mechanic