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Subject: "only one spark plug is firing" Previous topic | Next topic
anotherblitzedeclipseNov-11-03 05:26 PM
Member since Sep 25th 2003
34 posts,
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#62940, "only one spark plug is firing"


          

my car wont start so I pulled a spark plug out and all of my wires from the valve cover but I left them plugged into the coil. I put a plug in the 1st wire and it fired. I moved it over to the second, no firing, then to the third and forth and no fire. I dont know if this is a respectable way of testing spark but if it is, I only am firing in one plug. I never had problems starting it until one day it just stopped. It was misfiring every once and a while during idle and when I got on it. Could this be my cam position sensor? The weird thing is whenever it wouldn't fire at first, I bypassed my msd ignition and it fired right up, but then it wouldn't start again after that one time. Im about to fork out $37 on a cam angle sensor tomorrow so any help asap will be greatly appreciated!

I beat an IS300!!!

mods: custom CAI, pacesetter header, MSD ignition, unothodox udp, polyurethane motormounts, egr blockoff plate, ngk iridiums + wires, Greddy evo catback, ported intake manifold.

  

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ughhheadNov-12-03 03:33 AM
Member since Jul 05th 2003
775 posts,
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#62947, "RE: only one spark plug is firing"
In response to Reply # 0


          

did you have your plugs grounded on your valve cover? you gotta have your plugs grounded. that might be obvious but i figured i'd say it anyways. cylinders 1 and 4 are companion cylinders as well as 2 and 3 so if you're firing on 1 then you *should* be firing on 4. cam position sensor or crank position sensor are possibilities but if you've been having trouble with your ignition, then i think it's pretty safe to say its something with your msd, maybe a loose wire or something. good luc emoji

  

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