95 Yukon skip

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supergas5959

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Have a 95 Yukon 2 door, 350 5.7, TBI with about 225k on it. was driving back last night when in overdrive it seamed to skip, then about a minute later it did it again. not big, felt more like a little bump. then today it did it again. 50-60 mph it did it about 5-6 times over a couple minute period. all seemed up hill to. new fuel pump was put in last week along with a full tune this summer. anyone one else have this and possible place to look for . getting ready to move and am going to be doing 500 next week so i have couple days to fix it.
 

lesterl

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did rpms rise?

what exactly did "a full tune" involve?
 

supergas5959

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no rise in the rpms. it just feels like a bump when your driving. my tune includes, oil, filter, air filter, pcv valve, new plugs, new wires, distibutor cap, rotor cap, fuel filter, check timing, checking for broken or split wires in engine harness in hood.
 

lesterl

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Did it "skip" before the tuneup?

Put your old cap and rotor back on if not.....

Make shure you are using an ACDelco cap/rotor, decent plugwires, and NOT Bosch plugs....
 
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