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You are watching: Ford ranger 4 cylinder 8 spark plugs


I have a 1998 ford ranger and i would like to know if anyone can tell me why i have 8 spark plugs. I know it cant be 2 plugs per cylinder. I have a 2.5 liter 4 cylinder engine. Please can somone tell me why. is this odd or normal? Thank You
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Yeah, especially when some mechanics dont even know it..i once asked for spark plugs and was given 4, and at the time did not know that there was 8...pretty disappointed when i popped the hood lol.
Anyone know why Ford went with that setup? I know a buddy of mine had that on his Ranger, he was surprised when I told him he needed 8 plugs.
Go wings, Go pistons
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opcorn:
They were actually designed to spark right after each other for burning all fuel from the combustion chamber.
It helps to completely burn the fuel, and since the flame front starts on both sides and converges in the middle, it"ll burn in half the time of a normal 1-plug chamber. A fast burn is good.Compare a cross-bow with a compound bow, each with the same pull weight. The compound bow will out shoot the cross-bow every time, since it exerts 99% of it"s power in the first three inches or so of the throw. An engine works the same way. You want peak cylinder pressure to be developed at around 14-15 degrees BTDC. Also, the less ignition advance you can get while still putting the peak pressure at the right spot, the less the piston has to fight the expanding air before top dead center, thus making the engine more efficient.

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Great post and explanation there Pinhead! I could not have worded it better myself! Glad to hear your input.
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