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ford escort running rough at idle?

my friend has a ford escort (zx2?) and it has been running rough at idle and rougher at idle in gear. heard it might be some kind of vacuum problem, any idea what it is in more detail? they replaced the plugs and wire about 3 years ago i think and it shouldn't be time to replace them yet.

2 Answers

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  • 1 decade ago
    Favorite Answer

    before doing any work get a compression check on the engine. it,s due for new plugs . a vacuum problem usually means a pin prick in the tiny hoses that assist the idle system

    Source(s): ex yard mechanic
  • Anonymous
    1 decade ago

    could be the timing

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