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Thanks for all your help, you guys are great. I managed to find and fix my flame trap today. Unfortunately it was in relatively good condition so my emissions problems must be coming from something else. I'm going to go ahead and replace the O2 sensor and the cat, since my readings were very high.
HC: 3.97 (pass = 0.8)
CO: 157.67 (pass = 15.00)
NoX: 0.41 (passed! pass = 0.41)
The car also eats gas (15 mpg when I baby it), and has a noticable shake especially when I'm stopped. I noticed today that one of the fuel lines was loose, but clamping it didn't seem to fix any of the symptoms.
I don't think my car has an EGR. I believe if did it I would have a metal pipe coming off the intake manifold. Instead, it just has a circle where a hole could easily be punched for a pipe. Still, if anyone knows where I could find a picture of a 240 engine with an EGR, I'd appreciate it.
I'll let you know how things go when I install the new parts.
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