Engine miss with backfire

[MelectroK]

I am having an engine miss. Its only at the lower rpm range. Its intermitant and seems to only happen when I load the engine below 2500 rpms. Every once in a while it will also backfire into the intake. I have checked for oil/water around the spark plugs. I have had people tell me and and have read on here that 80% of all engine misses are plugs or wires. But what confuses me is how could I have a backfire if its a plug or a wire. To me that seems like a timing or valve related problem. I am also only 6000 miles from a 60k, are these problems related to any of that?

Hopefully someone can clear this up for me.

Mike

 

[SHOZ123]

Backfiring is almost always a timing issue. Either the spark is accidentally being induced through wear and tear or the timing belt has jumped a tooth or two.

 

[whiteman_01]

I am having the exact same problem right now. I was told from a few people here that it is my injectors. I have replaced so far: plugs, DIS, Coil pack, and the wires are newer. I am working on the injectors right now.

A friends father in-law also said injectors. He has been a mechanic for a very long time. We'll see.

 

[93rev2sev]

No mention of a MAF sensor above so I assume you have both removed it from the vehicle and cleaned the elements?

 

[MelectroK]

I have removed it and sprayed it a few times with electrical cleaner. Is there another way to do this, like remove it from the alluminum housing and clean it with a rag? I would think this would damage it.

I also should tell you that my backfire is not a constant backfire. Its like you take off from a light, you get a few misses, then one pop into the intake a few misses and by then your rpms are up enought that its running okay. I would think it was timing belt it would be all the time and more then once in a while.

 

[MelectroK]

I solved this problem by replaceing wires and plugs.

 

[gas it]

Any codes? Head over to Kalamazoo in a couple of weeks and you can steal ya some SHO plug wires off of about 1 of 100 SHO's.