Tracking down a pesky misfire…
My good old Ford F150 has been a bit ill lately. I’ve had a persistent but not constant misfire in the #4 cylinder that’s been giving me fits for the last couple months.
Spark plugs and wires have been changed in the recent past, and a local shop even replaced a computer they said was faulty, along with an ignition coil. That seemed to fix the problem for about a week, and then the misfire came back.
So today was truck fix’n day.
Some guys on a Ford F150 forum suggested that I check the heater hoses that carry hot coolant out of the heater core. If those hoses had a leak, it could drip right down onto the #4 spark plug and cause a short in the plug well.
So today I checked that. No drips from the hoses, and considering the temperature outside, the hoses weren’t even perspiring; I wish I could say the same for myself.
As a last ditch effort, I pulled the #4 spark plug out and replaced it with a spare I had sitting on the shelf. Voila that seemed to fix it.
A good test drive down the highway revealed no evidence of a misfire, so I’m slightly relieved. If I can go several days without a problem, I’ll just assume it was a bad plug.
Money Saved?
I vowed that if I couldn’t find the problem today, I’d make an appointment at Ford for a quality diagnosis. I’ve taken the truck to my local mechanic, and while I thought he fixed the problem, it showed back up less than a week later. That was after he spent nearly $700 in parts (the computer, plugs, wires, etc) to fix the problem.
The local Ford dealer will charge me at least $75 for a diagnosis (refundable if I have them do the work to fix the problem) and while I have a high level of confidence they’d find the problem and fix it, it will surely cost me a fortune!
So the fix really cost me about $8 for the spare spark plug I already had, and a half days worth of my time.
Not bad for being a tightwad, do-it-yourselfer…
Perhaps if my current career hits the skids, I could go on to be a mechanic… but only if truck driving school doesn’t work out!
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The way I look at storage is in mortgage payment per square foot. Take the overall monthly house payment (add in taxes and insurance) and divide that number by the total square feet in your house. Mine comes in at $0.65 per square foot. So those Tupperware bins stacked up in the basement holding all my wife’s college t-shirts is costing me about $4 per month to store.