4.3 cpi. I have a skip on cyl. 4. It is constant at all speeds. Checked plug and was fouled with fuel. New plug still misses. Switched plug wires and still miss on 4. Cleaned disturber and rotor. Still misses. Compression 150. What do you think? I am leaning toward spider injector but not for sure.

 

do a leak down/ fuel pressure test, procedure can be found with a simple search.

 

i would agree...it could be a fuel pump. on my old 95 it was missing real bad on a few cylinders. after doing a full tune up- plugs, wires, cap and rotor- still had the same problem. took it to a mech and he checked the fuel pressure. it was too low at speed, but fine at idle. changed the fuel pump and it ran hard after that.

my next step would be to have the fuel pressure checked. its quick and easy. any mech worth his salt should do it for a few bucks if not for free.

 

Did a leak down test and it held pressure. Guy at garage told me it was cylinder 4. Did a test and that cyl. has spark.