98 4runner Misfire Issue

[Boosted_IS300]

I have a 98 4runner SR5 4x4. It runs great and its in perfect condition. I keep up with the Maintance and repairs myself. The only issue I cant work out of it is at low RPM (Under 900)/Idle it has a very descrete skip. Its alomst like a misfire but not like its a dead miss. I have replaced Plugs and Wires, Fuel Filter, Air Filter, Did a Fuel system/Intake service with my BG poducts machine. Also hooked up my Snap-on Solar Diagnostics Scanner because I usualy can hook it up and watch each cylinder for misfire but it wont let me watch it for some reason. Anyone Have any other suggestions?

 

[Foo-Fighter69]

This might sound kinda dumb sense you did things that were more advance, but I had the same issue in my 97 and I put some additives in two tanks of gas and that fixed the issue. Had this problem in early May this year and still no problems.

 

[Boosted_IS300]

No suggestion is dumb to me as long as simeone is trying to help me. But when I do my fuel system services you put a additive in the take as well. So I'm out of ideas

 

[t4r4life]

check for vacuum line leaks, if one is leaking after the MAF it will cuz the truck to run lean thus mis firing.

 

[Boosted_IS300]

check for vacuum line leaks, if one is leaking after the MAF it will cuz the truck to run lean thus mis firing.

Already checked, I have a Matco Smoke Machine and already did a smoke test :/