ok so i had a miss on cylinder 6.....then i replaced all my spark plugs. then the miss was gone for about a month.

now it's back.

what do you guys think might be the culprit. i'm going to pick up another plug and change #6 again to see if it's something causing the plug to foul or what.

anyone else have a similar problem or have any advice?

 

ah yes also i notice it more under low rpm.....when i'm on the highway it seems to run fine.

 

Fuel filter,injectors plugged.I don't know I'm having the same problem it runs great in the higher rpm's but it sucks in the lower rpm's.

 

if the mis is still at #6 then check theCOP/plug wire and the injector

 

any other ideas?

 

can only be three things if I remember correct-like... no spark, no fuel, or no compression.

assuming you have compression (is there a reason to think you wouldn't? sounds like it was holding fine before.), and you change the plug and still have it, something is up with your fuel system. what did your plug look like when you pulled it?

 

the plug looked fine......old but fine.

but it could still be spark......in the coil department.

 

Yes....as stated....very possible .....(C.O.P)Coil Over Plug....coil and boot...they sometimes arch from the boot to the head....instead of the plug.....I've replaced several at the shop.......Also mositure came gather inside thespark plug hole(around the boot and plug) rust color...and cause a miss......seem it several times...yes I still have those injectors..Id prob just start with a coil and boot.....and maybe a new plug....

 

I have the same problem #5 injector misfiringand it rattles at high rpms so I changed all the spark plugs, nothing happened, now I am going to change all eight injectors tomm because after I changed one it made a little difference, but the light still comes on and rattles at high rpms. So now I am going to change all the injectors tomm and see what happens.

 

I agree with 8 Banger, it could be the coil on plug, also try putting some dielectric grease in the boot of the COP.