s-10 missfire

I have tried trouble shooting it and got no where quick, before you suggest something read what I have done......

New ignition from module to plugs
New fuel pump
New fuel filter
New injectors
Valve job
Compression is good
Fuel pressure is good

I'm ready to just do a 350 swap...Does anyone have any clues or hints to help me out?

I have tried trouble shooting it and got no where quick, before you suggest something read what I have done......

New ignition from module to plugs
New fuel pump
New fuel filter
New injectors
Valve job
Compression is good
Fuel pressure is good

I'm ready to just do a 350 swap...Does anyone have any clues or hints to help me out?

What year, engine.
Have you checked for codes?
Post code number

What brand plugs, wires, distributor cap and rotor

03 2.2, accel coils with autolite plugs and wires, no codes.

03 2.2, accel coils with autolite plugs and wires, no codes.

Pitch the autolite plugs in trash can and get the AC delco plugs the AC delco book calls for.
Good hot blue spark to all spark plugs?
Any check engine lights on?
And as said post back code no.

I've used autolite since 30K miles and had no problems with them and the plugs that are in it now have 2 miles on them and are good in condition.. Good spark, no SES light...

I've used autolite since 30K miles and had no problems with them and the plugs that are in it now have 2 miles on them and are good in condition.. Good spark, no SES light...


If it has a misfire it will have codes.
Get it on a good engine capable scanner and see what cylinders are misfiring and how many times.

Check all engine running data and fuel trims and tempt sensor readings.
Check MAF sensor.
Confirm fuel pressure up to specs with truck running on the road.

The chev engine and ign system is made for AC spark plugs.
Sometime autolite plugs matches the heat and tempt type plugs and sometimes they do not.
If it is misfiring for no other reason I would pitch them.