Motor acting wierd

[CENTENNIALSTANG]

Well two days ago i was out on the highway when i sprayed my car. It didnt feel right so i let off well i pulled over, it had a bad miss to it. So i thought i backed out some plugs but when i pulled them off cylender number 8 plug was melted so it had predetination, I had a bad load of gas so i replaced all my plugs and it started missing agian and sounded like my car had a cam in it cause it was loping. I did a compression test on it and it was good. Now i finally ran that crapy gas out like 10 miles ago, and its acting a little better but when i start it up cold it has a little lope to it still any ideas guys.
I could have went lean also on the bottle but i dont (think) i have a dinked piston casue i cant hear it bouncing around, but my lifter is nocking a little but i think i have always had that problem. Help me figure this out thanx :SNSign:

 

[ProCharger GT]

If you melted a plug, that electrode had to go somewhere - but I don't think that would cause the problem your describing. Did you re-inspect #8 after driving it? And does it get better after the engine is warm?

 

[CENTENNIALSTANG]

If you melted a plug, that electrode had to go somewhere - but I don't think that would cause the problem your describing. Did you re-inspect #8 after driving it? And does it get better after the engine is warm?

ya i gets better after i get it warm, im trying to get the rest if any bad gas out of it. But the only piece that broke off the old plug was a tiny porcolin part of it. I havnt checked number 8 yet but when its warm it runs like it used to

 

[RoadconeTuning]

just spray it again... youll burn up whatever the problem is

actually im really not sure what the problem would be... have you pulled some timing from your tune since youve had the melted plug?

 

[CENTENNIALSTANG]

just spray it again... youll burn up whatever the problem is

actually im really not sure what the problem would be... have you pulled some timing from your tune since youve had the melted plug?

Nope

 

[Duke309]

if you think it was knock that melted that plug, you should probably retard the timing a degree or two.

 

[GodAmGT00]

+1

I wouldn't even drive it until I knew why that Plug melted. Possibly pulling the timing makes sense, but doesn't really solve much..

Also, I don't get it though, the porcelin insulator doesn't even go IN the engine... If that's the only thing that broke, then I think you're alright. If compression is good, then it is possible, if you did indeed break something, that it made it out of the exhaust. I've seen a compressor wheel come out of a car's exhaust at the track before, so it is possible..


JT

 

[CENTENNIALSTANG]

I think i figured out the problem i somehow erased my nitrous tune. I had the scan tool on it, well at full throttle my timing was 50 degrees. So on 150 shot with bad gas and tr6 plugs and stock tune that **** will happen. Thats why when the cars cold it idles wierd. Im lucky i didnt blow out a piston but thanx for the help guys

 

[tjmaxx]

This might sound stupid but I thought maybe you were running on seven cylinders