Running on only 3 of 4 cylinders

[promba]

I just changed the spark plugs, and now It seems I'm misfiring. I gapped teh plugs and rechecked them. They seem to be working fine. I also checked and changed the wires. Don't know what else it could be. Also, when I checked the code it was P103.

Does anyone have any idea?

Thanks for the help.

[david gussie]

did you somehow cross the wires. did you take off and put them on one at a time? plug could be bad, but unlikely.

[promba]

no, the wires a specific legnth for each of the cylinders. any other ideas?

Thanks

[david gussie]

Also, when i first started changing wires many years ago, I messed up even though the wires were different lengths. Back then the wires were made of carbon and broke inside very easily. I don't know how to use an electrical Ohm meter, but you can send current through each wire to see if they are working properly. sometimes they crack on the inside as you install or remove them, their is no way of telling. Check all the connections to see if you might have brushed up against something and loosened a connection some where. I did all that over the years, LOL

[Cold_Zero]

I would make sure that the plug wire connects correctly to the spark plug. You can try and take the plug wires back and get a new set. Possibly they were defective from the factory.bud

[promba]

Turns out at about the same time I changed my plugs the seal broke on the ignition manifold - a $20 part with $500 worth f labor. Now it runs fine. Thanks for your suggestions.