rough running

245

Asked by Sonnyone May 31, 2014 at 05:30 PM about the 2000 Chevrolet Silverado 1500 LS 4WD

Question type: Maintenance & Repair

put in ngk TR51x spark plugs iridium under my hood it says gap is .060 these plugs were gapped at . 040 i was told to leave them gapped at .040 . should i have changed the gap to .060 ? any help would be appreciated

10 Answers

200,965

They say according to the type of plug there is a gap difference. One type is .060 and the other is .040. Your gap is probably not your issue. Did all you plug wire snap on tight? Did you replace plug wires too? If so are they in correct order? Could you have accidentally unplugged something while changing them.

7 people found this helpful.
200,965

Platinum plugs are gapped at .060 (oem). Iridium plugs are an upgrade and should be gapped at .040.

15 people found this helpful.
245

went and bought new wires according to the coil number. started up truck ran great. stopped to pick up some items truck ran rough. will be getting ac delco plugs tomorrow. i appreciate both of you people for helping will let u know how it goes. whay would be the best spark plug to use

5 people found this helpful.
245

i bought new wires according to the number on my coils what plugs do you want me to try and also on the shroud it says .060 gap what gap do i use

4 people found this helpful.
245

plugs originally were autolite app605 at .060 should i order them or get iridium and use gap of .040

7 people found this helpful.
245

put in autolite wires and ac double plainium plugs. truck ran great shut it off after a run and it ran rough. let it sit overnite started great did my erran 25 miles away started truck again ran rough no power???????

3 people found this helpful.
245

will try the sea foam today and check the fuel lines thank you

2 people found this helpful.
245

hi sorry it has been soooooo long in follow up tried a can a week of sea foam and it cleared the injectors right up you could actually feel when something went through. if anyone is having issues like i did go the sea foam route short money worth the shot tennisshoes very helpful cudos

2 people found this helpful.
60

The .060 gap gas been corrected in a bulletin to .040. The AC DELCO double platinum plugs come .045 and should not be changed, just checked before installing. https://www.youtube.com/user/How2Auto

6 people found this helpful.

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