Plugs too cold?

[Aaron'S'tang]

I changed my plugs and now the car runs pretty crappy. I put in Autolite 23's @ .035 because I have Powerdyne 9lb. SC. Should I have gone with 24's? How will a car run if the pulgs are too cold?

 

[86bluecobra]

did your car run a 11.9 on those plugs? if so is that what you consider crappy?

 

[86bluecobra]

if a spark plug is 2 cold you will start to get fouling(ie carbon build up) on the tip of the plug. pull them and have a look.

 

[Aaron'S'tang]

if a spark plug is 2 cold you will start to get fouling(ie carbon build up) on the tip of the plug. pull them and have a look.

It seamed to run fine at WOT but it idles like **** and surges. Almost seems like it is running really rich. It's hard to tell though because I have summer tires on and it's pretty cold out today so tires spun pretty bad. I think I might need a hotter plugs.

 

[86bluecobra]

if you get a set of hotter plugs pull them after a wot run. check for detination damage.

 

[HISSIN50]

I'd think the 23's would be alright (I've run two ranges colder on other cars before without issue. I've only gone one range colder on a 5.0 though [but it's N/A]).

I agree - pull them or atleast one plug and see what gives. They're copper or irridium plugs, right (not plats)?

Good luck.

 

[Aaron'S'tang]

I'd think the 23's would be alright (I've run two ranges colder on other cars before without issue. I've only gone one range colder on a 5.0 though [but it's N/A]).

I agree - pull them or atleast one plug and see what gives. They're copper or irridium plugs, right (not plats)?

Good luck.

Yeah Coppers. I'll have to pull one off and see what it looks like

 

[Aaron'S'tang]

Well, after I put the the old spark plugs back in on the right side of the engine and started on the left (pain in the azz because of SC) I realized that I had left one of my plug wires sitting against the headers. It obviously melted. STUPID HUH!! So I got a new plug wire and put all my old plugs back in and it runs like a champ.

The question remains though, are 23's to cold for my setup and how important is plug gap. The 23's gapped @ .036 were obviously not burning all of the fuel. The 24's that were in there seemed to run decent but they were gapped @ like .050. Should I get new 24's and gap them somewhere in the middle like .043 and see how that works? Thanks for the help.

 

[86bluecobra]

i was looking at vortechs web site and instalation guide and they were recomending that you use factory heat range spark plugs.

 

[Aaron'S'tang]

i was looking at vortechs web site and instalation guide and they were recomending that you use factory heat range spark plugs.

Really?

 

[86bluecobra]

yep.

 

[Aaron'S'tang]

yep.

Seriously!