had the same problem with spark plugs blowing out,breaking my ignition coils two.I had also purchased the inserts from auto zone.from the hole time I had the expedition a total of 4 spark plugs had blown I fix & fix till there was no way I could repair it myself.I took it to a shop they removed the heads & send them to a machining shop.
It has a knocking sound when cold or hot. It just f*cking pisses me of because it sounds like i don't take of my car! It makes me look stupid! And i already had my cruised switch replace last year! i tried putting the synthetic oil and restore oil.
- arnoldm,
Incline Village, NV, US
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had the same problem with spark plugs blowing out,breaking my ignition coils two.I had also purchased the inserts from auto zone.from the hole time I had the expedition a total of 4 spark plugs had blown I fix & fix till there was no way I could repair it myself.I took it to a shop they removed the heads & send them to a machining shop.
- Ricardo N., Lynwood, CA, US