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Originally Posted by SVXgarcia
I did the following test posted by SVXfiles
"If you want to find out which cylinder is misfiring, while the engine is idling, you can disconnect, one at a time, the fuel injector connections.
If it gets worse on five cylinders, and has no change on one of them, that is where your miss is.
Remove that coil and plug and check it to see if it has spark."
They all seem to make the engine worse there isn't one that has no change.
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My dad's svx just started misfiring today
pulling the injector plugs found it was cylinder #2
swapping the coil from cylinder 2 to another cylinder and pulling the injector plugs again narrowed it down to that coil. The misfire (or the no change in misfire) followed the coil. The rubber boot on the coil is in excellent shape so I have to assume the coil itself or the wiring for that coil is bad.
Unfortunately I am in NY and my spare parts are in SC so I have to mail a coil up here when I get back home so he can put in a good coil. But - I just wanted to let you know - svxfiles method of identifying the problem is excellent.