08 expo p0302

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dyablo

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Few months back i started noticing what i though were signs of the spark plugs going bad. currently at 93k miles, 30k of those i have owned the car. so I'm guessing it was on stock spark plugs. was going out to store then the idle got bad like all cylinders weren't firing or firing like they should. coil set were replaced when i first got the car around 60k three years ago.

turned around got home.bought new ford plugs prayed they wouldn't break. got them replaced without issues fired her up and it ran great. drove it around all day no problems.

the next day morning start up and same misfire issue. now it threw P0302, now for the life of me i can figure this out. tried moving COPS around that didn't help. pulled #2 injector off and manually checked to see if it was opening/closing it was.

now, I'm either chasing around a problem with a bad coil and the car just registers it as #2 or what am i missing here. i can hear and feel the misfire just can't find the problem.
 

docraymund

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To confirm, pull the connector on injector 2 while engine is running. If there's no change in rpm, pull the cop and check for spark.
 
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dyablo

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To confirm, pull the connector on injector 2 while engine is running. If there's no change in rpm, pull the cop and check for spark.
tried that and no change in rpm. checked the COP and that ended up being fine.

found out the problem was in the new ford plug. it must have had a very short life span. it was not working any more. took me a few days and headaches to narrow it down. never would have thought it was the new spark plug. problem solved. thanks
 
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