Help me Pass Emissions! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

milto0n · 11-27-2014, 12:14 AM

Check free stuff first: Usually all those little hoses behind the engine. Total PITA to get to but you'd be surprised how often they crack/ fall off. Check for vacuum leaks. You'd be suprised how often things just aren't tightened enough. Check for exhaust leaks. You said your EGR wasn't hooked up. That difficult to undo hard pipe that runs from the intake mani to the exhaust mani recirculates combusted exhaust back to the intake and is essentially what EGR is. And yes, hook that evap canister back up to save you a little gas money (and potentially your gas tank from exploding if not deleted properly!) I'm surprised your numbers aren't higher quite honestly but I haven't done smog in a while...

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11-27-2014, 12:14 AM	#18
milto0n Zilvia Junkie Join Date: Jun 2011 Location: Mesa, AZ Posts: 422 Trader Rating: (3) Feedback Score: 3 reviews	Check free stuff first: Usually all those little hoses behind the engine. Total PITA to get to but you'd be surprised how often they crack/ fall off. Check for vacuum leaks. You'd be suprised how often things just aren't tightened enough. Check for exhaust leaks. You said your EGR wasn't hooked up. That difficult to undo hard pipe that runs from the intake mani to the exhaust mani recirculates combusted exhaust back to the intake and is essentially what EGR is. And yes, hook that evap canister back up to save you a little gas money (and potentially your gas tank from exploding if not deleted properly!) I'm surprised your numbers aren't higher quite honestly but I haven't done smog in a while...