Engine without egr.
#1
Engine without egr.
I just got this seems like an 86 or 7 since it has the 4 lug and manual everything with no sunroof. I just took the engine out and it had an electrical mess but the n/a's usually have the egr on the top off the intermediate plate doesn't it? This one doesn't. It's a 6-port too so whats up with that? It seems this car has been messed with quite a bit and has a rotary7ven sticker on the front with some performance 4 wire box hooked into the MAF wiring.
#6
The EGR Valve is just above the exhaust pipe in the middle of the engine. It's purpose is to recirculate a portion of the exhaust gas back into the intake manifold, reburning it and keeping combustion chamber temperatures down, which aids in reducing emissions. I am just trying to figure out why this has S4 injectors and manifolds but the shortblock itself is not making sense.
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#9
The Cause of Death
EGR also helps reduce spark knock/detonation...due to recirculating exhaust gases back into the intake. If it's trying to burn inert gas...it'll ricehen the AFR's a bit...cause exhaust gases are already burned once before.
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