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318 petrol dosn't have EGR valve to recycle exhaust gases. Instead it has 2 air pumps, which inject air into exhaust system to reduce emissions, until the cat is up to operating temperature.
 

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Discussion Starter · #5 ·
318 petrol dosn't have EGR valve to recycle exhaust gases. Instead it has 2 air pumps, which inject air into exhaust system to reduce emissions, until the cat is up to operating temperature.
now that's something i never knew, so as they say, you learn something new every day.

p.s. my rivets gave way on my air pump last year, so it was making a loud humming sound, so all i did to fix was got some long thin allen headed bolts, spring washers, and nuts, and tightened the air pump back together.

cheers
 
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