I have a 1997 chevy s10 that has a 1998 motor in it and the number 4 cylinder isn't firing at all. I changed the plugs, wires, and coil packs.

SOURCE: 2005 chevy colorado runs rough and gets bad gas mileage.

Sounds like it needs spark plugs and wires, and a fuel system treatment.

SOURCE: 98 f150 cylinder 4 misfire(4.6)-

it mit be out of time try advance your disbutor

SOURCE: 2000 Kia Sephia p0303 code engine misfires

do a compression test. cylinder 3 could have a bad valve lifter or valve.kia sephia dont have push rods.it have a bucket type followers.a intake leak to that cylinder can also cause misfire problems.

Johnny Brown

• 5763 Answers
• Posted on Jun 12, 2010

SOURCE: Truck not firing properly front coil pack not firing at all.

if this truck has an o2 sensor i would replace that and also make sure the cat-converter is not plugged,this would give you your powerloss and egr code,next is your coil,this may be caused by the computer or your crank sensor,look at the tone ring that the crank sensor uses and make sure its not missing teeth or broken,also check all your fuses.

SOURCE: 1994 ranger. 2.3 engine. 8plug model. Dead miss in

According to Gates ( they manufacture timing belts ) the 2.3 L engine in a 1994

Ford Ranger is NOT an interference engine, so the valves would not make contact with the piston.

If you have good spark and compression then replace or service your fuel injector for that cylinder.

A red neck repair is to tap on a long extension touching the fuel injector while the engine is running. It may free up whatever is clogging it....If the injector still functions. Go easy on the cheap plastic that the injector is made of. also check for a good signal to the injector, and look for any corrosion on the plug.