well it looks like its come down to getting new coils. i cant figure out what else would make my truck misfire. ive pretty much checked everything else. my ? is what brand coils should i get, and how much should i expect to pay for them?

 

is it throwing a code or is it just running rough?? you dont want to just start throwing parts at it.

 

its throwing a code. and the check engine light is on. the code is a p0302, which is a cylinder 2 misfire. im just gonna take it in tomrrow and have it looked at

 

o ok if it is saying cylinder misfire. new plugs and wires right???. it s possible coil pack went bad. i hear accel supercoils are pretty good. i think around 50$ each.

 

plugs are brand new and wires are less than a year old. i probably should get new coils. but could it possibly be an injector?

 

injectors rarely go bad. only thing is when they get stuck open and that can cause a big problem. but even that is rare. how many miles are on your truck??

 

194000. my thought was that maybe one of the injector could be clogged or just dirty

 

194k?? ok could be a bad coil. they are reliable but your almost at 200k so..they are probably getting tired. you can always get the injectors cleaned at a shop for 50$ see if that helps. with that miles im leaning towards coil pack. good chance those are the originals.

 

What plugs did you go with in that 98 ?

 

motorcraft plantinums

 

did you gap the plugs correctly or just put them right in??? i know silly question but... the simple thinbgs sometimes get overlooked. im speaking from experience.:o

 

yes i did. and all but one was already at the right setting. i just replaced my coils about an hour ago and its still running bad. could it be a bad/clogged injector?

 

If you are convinced that there is a good ignition, try to Find a BG shop to do a fuel system service. They clean up the injectors, valves, throttle plate, intake, combustion chambers, pump and even the front 1/3 of the cat. It's a 3 part process, they do the fuel rail, the throttle body and the fuel delivery system. The last part, BG 44K, goes through the fuel system with about 15 gallons of gas and removes the carbon that the first 2 steps softened. 44K is so refined that it does not burn in the combustion chamber, it just cleans and moves down the exhaust. Good stuff.

 

well one of my best friend's dad works for BG, im sure he could hook me up.

 

similar issue going on here...p0304..cyl 4 misfire. ordered coils, received them. bought manual to figure out how to change them. no luck..anyone have a step by step guide on how to change the cyl 4 coil? i've got an 01 Ford F150 scab 4x4 with the 5.4L V8 Triton engine. also need to know what tools to have on hand. extendors, sockets sizes, etc... friend mentioned i might need to remove the fuel rail.. i don't like mess'n with fuel.