1998 silverado just put 1 new head on the right side , runs and misses bad at low idle but at a high idle slight miss , but when at and idling it doesn`t fire on 1,3,5,7 just found out yester day that it is gettig fuel and not firing on those four cylinders , yes the vale lash is good , wires and cap ohm out fine , crank sen and cam senoir test out good , i also need to check the coil driver and if that didn`t work i dont thank it would fire lol ,i also thank that so who some wy and is posible the pcm just could of gone bad , but i can read the all of the programs in the pcm

 

You are sure your cap is good right?? I have had to replace mine numerous times, they short out due to bad design,

 

Are you sure your timing is right? Did you adjust the valves right?

 

I think Zuk is right, sounds like you have little or no compression on that side, no compression no fire.

 

thanks guy for your help , i still cant figure it out tho i would like to let you guys know that i had the heads checked . and the right one was bad and the left ok , so it has two new head gaskets on it and the compression test was good too,checked all the sensoirs and plugs and terminals on problems with that . and still runs on the right bank .

 

How did you adjust the valves?

 

in the correct matter lol , i got it right i know i do , im ase certified in gm ford chyrsler toyota ex.