Changing spark plugs

I would suggest replacing your plenum gasket also if you go that route. It's not very hard to do, just basic r&r.

How do I get to the spark plugs on firewall side of engine?
I haveread rthat I need to remove part of intake manifold, Fellow at parts store suggested I disconnect exhaust and one engine mount to tilt engine forward and access plugs that way.
I also need to replace O2 sensor on that bank.

Engine Performance problem
2003 Mercury Sable 6 cyl Front Wheel Drive Automatic

How to change spark pugs that are under the manifold on a 2003 Mercury Sable

I jusy recentaly bought a 1995 mercury sable an I did a transmission flush and an oil change plus an tune up and bought new plugs for the sparks plug and wires what could it be now. Also the odometer works for a minute and the next it stops

How are the rear spark plugs/wires accessed?

Sorry about the lack of info. 24 Valve DOHC 3.0 L engine. Looks like the intake will have to come off, but I wasn't sure if you accessed it through the interior or by removal of the intake system. The engine mount tip was great. I just put it in park and moved the car moved the engine right over, plenty of room.