Intake monifold removal - 2003 Mitsubishi Diamante

Doesn't mean it's intake manifold , could be burnt intake valve . Have a cylinder compression test to find weak cylinder , then do cylinder leak down test ! If you are unfamiliar with this , I suggest you take it to a ASE certified repair shop ! IF it is a burnt intake valve that cylinder hear will have to be taken off an taken to a automotive machine shop !

sounds to me like you have vacuum leak or manifold leak. See if you can hear you intake sucking air my need to replace gasket or check vacum line loose or cracked

Intake possibly

Go to Real Fixes Real Fast on You Tube Video
& watch Wayne show you the problem

firing order for 3.1 lumina 1994 ans older with coil pack under exhoust monifold firing order is 146325
for 3.1 lumina 95 and newer with coil pack on top of engine firing order is 523641

Either the choke unit, or maybe you're just thinking of the inlet manifold.

Regaurdless of which of the two exhaust manifolds you are attempting to replace it will be necessary to remove the exhaust manifold crossover pipe that lays over the top of the transmission and bridges the front and rear monifolds. Once this piece is out of the way you should be able to use a wrench or a rachet and socket to remove the bolts fastening the appropriate manifold to the cylinder head. Always remember to replace the exhaust manifold gasket as well.

what model make of vehicle,4 cylinder,6 or 8,most times its on fuel injector monifold,(part all fuel injectors are attached to) if its a throttle body injection,follow fuel line going to throttle body and u will come to regulator

The possible causes of the oil leak has to do with the PCV. See more on this in this diagnostic article:
http://yourhandymanzone.com/Your_Handyman_Zone_How_To_Pages_Vehicle_Car_Zone_Cars_Trucks_Vans_Oil_Leaks_Into_Air_Filter_Housing_Air_Filter.htm

The exhaust smoke in the morning is due to engine flooding, as noted in this article:
http://yourhandymanzone.com/Your_Handyman_Zone_How_To_Pages_Vehicle_Car_Zone_Cars_Trucks_Vans_Emission_System_Black_Smoke_Exhaust_Exits_Tailpipe.htm

Brad

remove them from any angle possible. as for tools should be metric or standard octagonal heads. make sure you disconnect the battery so you dont cause a short or pop anything. took me 3 altenaters to learn that.

My truck was doing the same thing.... replaced the crankshaft sensor first, truck would still die after about 10 minutes of idleing, it back-fired thru the engine and blew off the back of the intake manifold. Pulled the monifold, reglued end-cap and put back in truck. STILL died after idleing for 10 minutes. Code PO320 kept coming up ( crankshaft sensor) researched it and found a bad camshaft sensor can cause crankshaft sensor to act up and give code for the crankshaft sensor. Replaced camshaft sensor and the truck runs like a dream !!!!!! I believe the Manifold was cracked for a while causing the 1299 code reading ( vacuum leak) the back-fire finished it off! I would check the back of your intake manifold for a leak. The combination of fixing the vacuum leak , cam/crankshaft sensors seems to have fixed the problem. GOOD LUCK!!!