Re: What to do with the Secondary Air Injection system (ACU engine)

Quinn Haughey All Messages By This Member #164780 开云体育 Hi Radek, As far as I know, the secondary air injection system only operates for the first 60 or 90 seconds of a cold start. It pumps air into the exhaust flow to help the catalytic converter convert all the unburned fuel. As long as the system isn’t the source of exhaust or intake leaks, the van should run fine without it. See this samba thread for more info:? Thank you, Quinn toggle quoted message Show quoted text On Sep 15, 2024, at 8:44?PM, Radek <radek.radarski@...> wrote: ? Hello, ? I'm troubleshooting a 1995 Rialta with ACU engine for a friend who just bought it.? There were monkeys in the engine bay: loose wires, disconnected vacuum hoses, SAI check valve cut out, radiator blower fans bypassed with a switch - a real mess. In comparison to my old AAB, this engine has some extra complications, like the SAI system.? My question is this:? should I try to reconnect and repair the SAI, or should I rather do away with it.? Has anyone successfully removed that system? Will the engine run correctly without it? Thanks for any suggestions, ? Radek

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