Question about Mazda MPV
Hi, it's not the coil. Take the #1 plug out and plug the wire back onto it, then use an oven mit or other insulator to hold the plug threads against the engine to form a ground connection while someone briefly starts the engine (this will be loud with the plug out). Check to see if the plug is sparking. If no spark, you have a bad wire or plug. If the wires are old, change them all. Please see my tip at http://www.fixya.com/cars/r6715318-causes_gasoline_engine_misfires . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.
If you have spark, run a compression test on the engine to see if #1 has low compression. Get back to me if it does for further troubleshooting steps.
If you have spark and compression is good, then pull out the injector and clean or replace.
Please see my tip at http://www.fixya.com/cars/r6715318-causes_gasoline_engine_misfires . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.
Posted on Mar 25, 2011
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Posted on Jan 02, 2017
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