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What would cause a miss in the engine of a 2004 Chevy suburban?
Wiki User
∙ 16y ago
In order:
Bad cylinder,
Check compression on all cylinders, low compression on one cylinder indicates failure point. No or low compression points to the affected cylinder.
bad fuel injector, use ohmeter to check injector coil. Run a can of injector cleaner through the unit.
Bad coil pack, pull plug wire on each cylinder of running engine, do this quickly to eliminate chance of damaging catalytic unit. Note RPM drop on each cylinder. No drop you've found the suspect.
bad sparkplug, pull plugs and inspect
bad wires, you get the drill
bad ECM unit. not common but $$$$
Be careful playing around high voltage, if you don't know what you're doing take it to a shop.
Wiki User
∙ 16y ago
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