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Trailings not firing????

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Old 03-11-06, 10:14 PM
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Trailings not firing????

I jsut put my new rebuilt engine in and my trailing are not firing??wat can be the problem..also will s5 trailing coil packs worj on a s4
Old 03-12-06, 12:30 PM
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Sure they are not firing??? Is the Tach working?
Old 03-12-06, 12:35 PM
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Yes, s5 trailing coils will worj in an s4 car. What are your symptoms?
Old 03-13-06, 09:57 AM
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well the tach moves slightly but when I put a screw driver in the plug wire tehn ground it I dont get any spark
Old 03-13-06, 12:19 PM
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Your leaving some things out. Does the engine start or not? If it starts then tell us if the tach works normal.

No start and a jumping/bumping tach means the trails are firing.

Trail plugs/coils are not required for starting a engine. The only way you would notice is if the tach did not work.
Old 03-13-06, 01:23 PM
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the tach works but I think the reason my engineisnt startingis b/c I have a vacum leak the tach does work but I groudn them and it doenst spark
Old 03-13-06, 02:24 PM
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FYI.........The tach works off the trail coils Working and firing. Movement of the tach needle therefore most likely means the trail plugs are firing. Something like that.

A engine will start just fine and dandy without the trail coils working or not. Concentrate on the lead plugs and Flooding and the right timing.
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