I pulled the front 2 plugs on each side last night and they were all white no green just white. My truck is stock for a few days i have had a 4lb pulley and chip in it but they have been off for a week or so.Why would my truck be running lean on thge stock program and pully?I hope its not the fuel filter.

 

What Plugs you running ???
People will disagree but my Stock plugs ran cooler than my TR-6's, even with 6 extra lb's of Pulley Boost

Stock plugs after driving it like I stole it for weeks with a 4lb lower and a 2-3 lb upper


Now the TR-6's with the same tune after a few hundred miles

 

tr-6 beacuse i usaully have my 4lber on

 

I've been running TR6's with a 4lb lower and 2lb upper for awhile now and its holding up good for me, I'm happy with the results.

 

nobaody have any ideas what could be wrong?

 

why would you hope its not the fuel filter, thats like a $8 five minute fix ya know.

~Toast

 

This cold weather may have leaned your a/f ratios a little. If they're not blistered or the electrodes aren't eroded, I wouldn't be too concerned.

Dan

 

I sat up last night thinking about why it would be lean and i could only come up with one thing that i had left the driver side vent tube loose from the valve cover when i was uninstalling my throltle body the other day.Just wenty outdside and shure enough it was off. Could this be causing it to be lean?