Read my spark plugs (pics)
- Thread starter M4_ELITE
- Start date
I hate to read plugs from pictures, but yes the silver speckles are melted aluminum from the tops of your pistons. Do you have a head cooling mod, if not, you need it. You may need to go have the car retuned as well.
Also what plugs are they and where is your AFR at WOT? That may help give more insight.
No head cooling mod. I had a shop replace the plugs after I blew one out in Jan 2010, I think they put in Motorcraft sp471. AFR last dyno run was around 11.8 if I remember correctly.
Also I haven't heard any loud knocking & car hasn't overheated ever. But the car did have a check engine light come on in mid 2011. p0171 or p0174 code came up and I cleaned the MAF sensor initially... Then replaced sensor and found & fixed the vacuum leak (melted hoses by supercharger + firewall).
So I guess my question is will I be looking at a rebuild soon? Will the engine last w/ light detonation? Thank you.
Also I haven't heard any loud knocking & car hasn't overheated ever. But the car did have a check engine light come on in mid 2011. p0171 or p0174 code came up and I cleaned the MAF sensor initially... Then replaced sensor and found & fixed the vacuum leak (melted hoses by supercharger + firewall).
So I guess my question is will I be looking at a rebuild soon? Will the engine last w/ light detonation? Thank you.
Went to my mechanic today and had him look at the plugs, change the oil and fuel filter... The plugs were a little peppery and the fuel filter wasn't completely clogged but he couldn't blow through it... So he attributes the plugs to a bad tank of gas/dirty fuel filter. Car feels great w/ new fuel filter and spark plugs!
Last edited:
01cobravortech
Banned
Proper way of reading a plug is doing a pull and then pulling the plugs.
Noted, thx!
+1 just be sure to let it cool so you dont risk pulling the threads!
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