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jackhud
New User
Dec 27, 2009, 4:08 AM
Post #1 of 2
(2512 views)
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Ford Focus Not Sparking
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Hello,
My 1.6 Zetec Focus lost the spark to plug four in the cold weather. I have just replaced the whole set of plugs and leads but still have no spark to plug four. Any idea's on the problem?
cheers
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DanD
Veteran
/ Moderator
Dec 27, 2009, 7:06 AM
Post #2 of 2
(2497 views)
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Re: Ford Focus Not Sparking
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There’s a good chance that it’s the coil pack that is at fault
Even though we didn’t get the year from you and I don’t see a listing for a 1.6lt (2.0lt maybe and there are two different of them) engine for a Focus; I believe they all had distributor less ignition systems. One system uses a coil pack (Integrated Ignition) the other has individual coils for each cylinder (Coil On Plug). With you saying; you replaced the ignition wires; I’m assuming it’s an integrated coil pack system.
Numbers 1&4 are on one coil and 2&3 cylinders are on the other coil; both coils are housed in one coil pack.
One half of one coil in the pack’s secondary outputs may have shorted to ground; in this case #4. The coil is still producing spark; because #1 cylinder is still running; but the spark for #4 is no being directed to the #4 spark plug wire, but to ground, internal of the coil.
Just a guess on my part; but I’ve had to replace a number of coil packs for this reason.
Dan.
Canadian "EH"
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