Silhouette AU2 XLS Marlin
Join Date: Dec 2004
Location: Albany WA
pls help! drop in fuel economy with new plugs
I've bought an AUII i6 falcon ute with about 96000kms on it and i just changed the spark plugs as the ones in it were absolutely rooted! My Brother said they were in the worst condition he'd ever seen and was suprised the car actually started -he reckoned they were the original plugs from when the car was new!
The best i could get with the old plugs was around 8.5km/L (when i was driving really really gently) and i've just calculated it again with the new plugs and i'm getting 7.7km/L... pretty pissed about this! i was expecting to get slightly more with new plugs as the old ones were SO BAD! Could it be anything to do with maybe putting the wrong plugs in? i noticed the new ones were slightly longer than the old ones, but they're ok and not clashing with the pistons. They were the ones that Repco gave me for the AU so they should be good. Could it be the leads? How do i tell if they need replacing too?
Any help would be awesome, sorry to sound like the dumb girl but i'm no mechanic yet lol!
pics of my ute HERE