[s-cars] Spark Plugs

[Wayne Dohnal]

Matt,

Just in case you're no familiar with the engine, the plugs are under that 
long thin cover in the middle of the valve cover.  Look way down, that's 
them down there.  When I got the car it took me a few weeks of random 
looking around to find them.  You'll need a fairly thin-walled socket to get 
into the cavity.  They're not rare or anything like that, just not every 
socket will work.  Make you you torque them to spec, and (very important!) 
retorque them at least once after a few hundred miles.  These plugs have a 
bad habit of coming loose and a few unlucky owners have one blown half way 
through the hood, causing a lot of collateral damage to the engine.  Mine 
seem to stay tight after the first retorque.  When I changed them the first 
time, a couple of the plugs were only finger-tight.  It's not a horrible 
job, and the new plugs will last for at least a few 10,000s of miles.

Wayne Dohnal
1994 S4 



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