car is running like ***. its stumbles real bad,idles rough and drives like its on a few cylinders. any ideas

 

Flashing SES = misfire. It's ignition most likely. Try the search button. There are alot of posts on this.

Original plugs and wires? its time to change after almost ten years anyway.

Get the code pulled and see what it says. It will help you more than throwing parts at it.

 

Misfire.

Bad plugs, burnt *old* wires, or opti issues.

 

msd 8.8
ngk plugs
codes= multiple misfire

 

Probably burned a plug wire

 

plugs were all loose. tighten them can ran good for a mile or so then went back to doing the same. ses light flashing,car running bad and weak. i guess its the opti?

 

changed the plugs today and the same runs good for about 5 minutes then goes down hill from there. could it be bad o2 sims? or o2 extinions? im gonna change the wires this weekend. anything else maybe???

 

Could be fuel fouling the plugs. What did the plugs look like when you pulled them? Did they smell like fuel??

-Mindgame

 

they had a little black but mostly were white and didnt smell like fuel.

 

It's a stretch, but check to see if your water pump is leaking onto the opti via the weep hole.

 

Come on man, runs crappy you find they are loose. You tighten them and it runs good for a WHILE. Then you replace them (read tighten again)and it runs good for a while. Have you checked to see if any were loose AGAIN?

Tell tail sign is a shhh shhh sound (but not always)while it's running. some un practiced ears hear a ticking sound when actually it's the combustion by products running past the plug.

 

did you not read that i changed them i guess they would be tight.

 

You just said enough. No need to guess anymore.