I'm not familiar with the engine, but located the distributor and find the face which has numbers ranging from 1 to 6. Locate "1" and have a look at which cylinder it leads to. That said, It's probably the front left cylinder.
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You don't say which model of Mercury Vehicle , but :
front wheel drive is :
firewall
1-----2-----3
4-----5-----6
front of vehicle > driver
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rear wheel drive and 4x4
firewall
3 - 6
2 - 5
1 - 4
front of vehicle
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∙ 10y agoOn a Mercury Sable , V6 engine : firewall 1-----2-----3 4-----5-----6 front of vehicle > driver
Number one cylinder is the front passenger side in a V6 Dodge Magnum.
First cylinder in back on the passenger side is number one.
On a Mercury Villager , V6 engine : firewall 1-----3-----5 2-----4-----6 front of vehicle > driver
For the 2.5 4 cylinder, number one is the first cylinder from the passenger side.For the 3.5 V6 cylinder, number one is the first cylinder in back from the passenger the side.
Number one is the front, driver side.
where is the number one cylinder on an 88 Toyota 3.0 v6
On a 2001 Mercury Cougar , 2.5 liter V6 engine : firewall 1-----2-----3 4-----5-----6 front of vehicle > driver
125 Horsepower for 4 cylinder and approx.180Hp for v6 (1999 models)
On a 1999 Mercury Mountaineer , 4.0 liter V6 engine : firewall 3 - 6 2 - 5 1 - 4 front of vehicle
A 1996 Mercury Sable has either : One timing CHAIN on the 3.0 litre " Vulcan " V6 engine or Two timing CHAINS on the 3.0 litre " Duratec " V6 engine ( one CHAIN to each cylinder head )
Number @ cylinder is located at the front of the engine nearest the distributor and closest to the grille. FYI, the distributor rotates counter clockwise. ------------------------------------------------------------------------------------------------------- Just adding to the answer : firewall 1-----3-----5 2-----4-----6 front of Mercury Villager V6 > driver