Cali smog,
Hey guys so i have been trying to smog my 91 240 (dohc)
it passed everything except the nox(common thing with 240s)
so i cleaned the egr valve and the metal pipe that goes around form the exhaust manifold to the air manifold.
My nox was reading 3300. and i was wondering if that's possible, perhaps i hooked the egr back on wrong?
can some one please help me :/
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