2005 - 2014 MustangsDiscussions on the latest S197 model Mustangs from Ford.
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So lat week I changed my spark ifs without breaking 7/8 and the last one (driver side closest to fan) broke, $100 later and 20 minutes with the lisle tool and I got it out and replaced, while doing maintenance I changed the fuel filter, I also added a set of under drive pulleys... (I know too much at once) and since all that I feel like I lost some power and the engine sounds like its knocking a bit with a screeching sound loudest at the front of the drivers side, also the ad ratio seems a lot more active on hard revs,
Could it be pb blaster burning off still? Only drove for 10 or so miles)
All plugs and coils are secured tightly and sufficiently.
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The belt appears to be tracking straight and no wobble in the pulleys I torqued them down like I was supposed to.
I used ht1 plugs and anti sieze and boot grease the pb blaster is from when I changed the plugs I used it to loosen some of the carbon
No offense, but your descriptions suck. lol. Try to make a YouTube video of the abnormal running condition, whether that's driving or sitting in the driveway (have someone sit shotgun and film if you're driving). That will help give a better idea of where to start looking. Just don't make it with a crappy cell phone.
2014 Mustang GT w/TrackPack
Borla S-Type axlebacks
Much more to follow....
What plugs did you use? anything but copper plugs will cause issues. did you use dielectric grease on the cop's? and for future changes I hope you used anti-seize!
why would there be pb blaster in the cylinder? please provide more info
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OEM Plugs are platinum as are most of the aftermarket replacements.
OP, did you clean out the threads and cylinder before putting the new plug in? Sounds like you could've had some broken porcelain in the cylinder. Unless you vacummed out the combustion chamber (Tube and shop vac) that's probably what you heard.
08 S197 GT Auto: FRPP Strut Tower Brace, FRPP Bullitt CAI, Bama 91-P Tune, VBX remaned valve body with Superior Transmission Shift Kit.
Pending upgrades: Shaftmasters Aluminum 3.5" DS, FRPP 3.73 gears, Axle back exahust (?)
Originally Posted by LostBoyz
if you are getting 29mpg in your 5.0, you aren't driving it correctly
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