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Could new plugs/wires or fuel filter make hesitation much worse?

(1999 Chevrolet S10)
in Lexington, SC on December 02, 2017
I have a 1999 s10 2wd 4.3L Vortec. Had very slight, very infrequent engine hesitation. So I had a shop put on new plugs and wires, and a new fuel filter. Now it is worse. I am thinking it has to be a plug/wire (or less likely, fuel filter) defect, disconnection. The shop has it now and is checking it out. Is there any way the plugs/wires or fuel filter replacement could make the hesitation worse, if it was something else? Or does this have to be a problem with one of the repairs?
Tags: chevrolet, s10
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Popular Answer
on December 02, 2017
Spark plugs and plug wires aren't likely responsible for a "hesitation" .. A misfire maybe .. The "new fuel filter" shouldn't have made the "hesitation" any worse - UNLESS - there is a leak at the filter/fuel line connections .. Before we can be of much assistance, we would need the scan test results ..

I have to assume a complete scan test was performed before any work was done and then again when you took the vehicle back.
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on December 02, 2017
I will have to check on the scan test results. I'll get back to you. Thanks!
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