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Bottom of the radiator.
The 1997 model Mercury, 225 hp EFI uses a NGK BR8HS plug, gapped to .035 in.
.054
what is the spark plugs firing order for a mercury villager 1997
A spark plug socket.
You could change the spark plugs, sprak plug wires, computer chip.
4 cylinder engine - ( .050 inch ) V6 engine - ( .054 inch )
Changing the spark plug wires is very simple. The replacement wires are the Bosch 5812-07098319 set for the V6 orÊBosch 5812-07098498 for the 4-cylinder. One at a time, disconnect the wire from the distributor and the plug. Replace with the wire that is the same length. ProceedÊ
.040
.54 is the gap on the tracer
We found the the valve cover had a bad gasket. We had to replace ours and that solved that problem.
On a 1997 Mercury Grand Marquis : Check the Vehicle Emission Control Information ( VECI ) decal in the front of the engine compartment , for the type of spark plug used and the spark plug gap