1-3-4-2
When diagnosing engine trouble it is important to know the firing order of the engine. The firing order of the 1995 Mitsubishi Eclipse is 1,3,4,2.
Most likely bad plugs or firing order isn't right, i would start by checking the order you got the plugs and if that's not it check the plug wires.
A 1995 Mitsubishi Gallant will experience backfiring if the ignition timing is set incorrectly. This results in the fuel and air mixture being burned when valves are still open.
at woolworths
1-3-4-2
1-3-4-2
4-3-1-2
1-3-4-2.
The 4 cylinder is 1,3,4,2 the 6 is 1,5,4,6,3,2
Inside the distributor
It is located internally inside the Distributor
large vacume leak in the intake manifold