my 87 lude wont idle smoothly. it misses but it is not consistent with any particular cylinder. i replaced the plugs, wires, cap, and rotor. didnt fix it. replaced fuel injectors. no change. checked compression on all cylinders, cranking and running, all were within 5 psi of eachother. what should i try and replace next? or test? any ideas? it does not miss when i'm driving it. actually to be more specific it doesnt actually seem like its missing completely. its like the cylinder will fire but wont have much power. thats why i thought it might be a fuel delivery problem. come to think of it i havent checked the timing on it. maybe the vacuum advance is bad? but if that checks out ok what should i do next????

 

check the fuel filter? fuel pump? also check the ignitor and coil resistance.

neil

 

the ignitor is inside the distributor correct? and do you know what the ohms spec might be on that?