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Coil burnout in the case with coil packs can be caused by wrong plugs, wrong plug gap, and bad plug wires if yours has plug wires (some dont). Other cause are improper installation, water contamination, or excessive heat (possibly from a coolant leak).
Since I've been using this company truck it had a coil problem within the first 3 months. Replaced a couple coils.
then it sucked the crumbling intake gasket and started to run hot cause I couldnt keep enough water in it. Replaced the intake gasket but the mechanic didnt take care to not let the crumbled gasket get into the engine.
Flushed the engine and coolant and replaced some coils and plugs.
Then fuel pump goes bad.
I assumed the mechanic replaced the coolant when he flushed everything from the intake gasket debacle. It never dropped below the fill line so I never bothered to see if it had antifreeze, I assumed that would be standard. My mistake, never again! Winter came and the block froze but luckily nothing was damaged but the heater quit getting hot.
A month later the water level starts going down within 2 days I'm adding 2 jugs of water every stop to keep coolant full. 5th day and you can clearly see the radiator is leaking bad. Probably from freezing this winter. Replaced the radiator.
2 weeks later it starts stumbling again. I feared it was the trans but it gets worse and familiar at the same time and I know it's the coils again.
So I've concluded that all the over heating and coolant problems are the main cause of my coil problems, not my driving or anything else in related to the ignition. I'm hoping that fixing the intake gasket and radiator has solved my coolant problems and once the coils and plugs are replaced the only thing I'll have to worry about is the trans going or the whole engine grenading because at this point I'm a worst case scenario kinda guy. Lol.
I hope this fixes it. Working with out my truck is a huge hassle and stripping everything off and putting it back on my truck every couple months while it gets fixed just sucks. I'm tired of worrying about not having what I need at the jobsite and no way to get it. I'm tired of worrying what the boss thinks and says. I just want my truck to work and the boss off my ass over his truck.
Last edited on Wed Apr 17th, 2019 11:26 pm by Eddie Money
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I know my crazy! Do you?
2007 Sport 4door 4x4 4.0L SOHC V6 Ranger