Thread: HELP!! Au xr8 series 1 Running rough,
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Old 28-08-2014, 11:51 PM   #40
Evgeni
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Default Re: HELP!! Au xr8 series 1 Running rough,
Not overly familiar with the location of everything on the v8's but just did some searching and it turns out the au didn't have an egr. Can someone confirm? It's basically for emissions. Recirculates exhaust gas at cruise for emission and economy. Usually electronically control and will lead to a rough idle if open at idle.

The regulator should be vacuum controlled. sometimes a quick test is to pull the vac line off and let the car run. Sooner or later fuel will spit out of the regulator through the vac line connector due to a ruptured diaphragm.
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