Firing Order: 1-5-3-6-2-4 Of course the cylinders are numbered 1-2-3-4-5-6 from the front of the engine to the rear. Remove the distributor cap & spark plugs, and turn the engine over slightly without starting and observe which way the engine turns and which way the distributor rotor rotates. Now turn the engine over by hand until you get the #1 piston at TDC on the compression stroke. Now look where the rotor is pointing. It will be pointing at the #1 spark plug wire location. Replace all spark plugs. Connect the #1 plug to the location the rotor is pointing to. Now count in the direction the rotor turns to the 5th plug location and connect the 5th spark plug wire there. Then do the 3rd, 6th, 2nd, and finally the 4th. Reinstall the rotor and fire it up. For more info on your Chevy click the link.
Sounds like it is time for a good tune up including spark plug wires.
On the 3.0L the air cleaner box is in the way. Other than that all you have to remove is the plug wires.
check compression 10 to 1 you have a burnt valve
On a Ford Expedition V8 : firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle
Right between the 4th and 6th!Sorry about that, just couldn't resist...#5 is in the front bank (easy to access side!) in the middle.See "Related Questions" below for more
On a 2001 Ford Expedition , 5.4 firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle
from what i know there is no difference in what piston loses compression based on the layout. a piston loses compression due to faulty valves/seats/stems or damaged piston rings. if you have low compression problems, check the above, in that order
COIL
next to the 5th
On my 4 cylinder I very rarely used 5th gear ( overdrive ) but on long trips on level ground it could save some gas. My 6 cylinder, on the other hand loved 5th gear.
from the front of the car passenger side is front to back 1,2,3,4. drivers side front to back 5,6,7,8. Therefor cylinder 5 is the drivers side front cylinder. The coils are mounted to the valve covers. The coils are expensive, check the the coil to plug connector,they are noted failure points on that engine and always a good idea to replace when changing plugs on the m119 E420 engine. (courtesy of benzworld.org)