BAR Smog Check Gasoline Visible Smoke Test Training When was the Visible Smoke Test incorporated into the Smog Check program? - Answer -March 2008 When was the test revised to include the throttle snap sequence "BAR Snap Test"? - Answer -January 2010 To which cars does the BAR Snap Test apply? - Answer -All model years & GVWR of gasoline, CNG, LPG, and ethanol vehicles CNG - Answer -Compressed Natural Gas LPG - Answer -Liquid Petroleum Gas LNG - Answer -Liquid Natural Gas How many parts are there to the Visible Smoke Test? - Answer -1) Crankcase Test 2) Idle Test 3) BAR Snap Test What is the Crankcase Test (Part 1 Visible Smoke Test)? - Answer -Check for smoke from the crankcase by observing the engine crankcase system for 10 seconds while idling What is the Idle Test (Part II Visible Smoke Test)? - Answer -Check for smoke from the tailpipe at idle What is the BAR Snap Test (Part III Visible Smoke Test)? - Answer -Check for smoke from the tailpipe during BAR Snap Test. There are 3 BAR snaps that must be performed. 1) BAR Snap before TSI or ASM to become familiar with throttle (do not check for smoke)
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When was the Visible Smoke Test incorporated into the Smog Check program? - Answer-March 2008 When was the test revised to include the throttle snap sequence "BAR Snap Test"? - Answer-January 2010 To which cars does the BAR Snap Test apply? - Answer-All model years & GVWR of gasoline, CNG, LPG, and ethanol vehicles CNG - Answer-Compressed Natural Gas LPG - Answer-Liquid Petroleum Gas LNG - Answer-Liquid Natural Gas How many parts are there to the Visible Smoke Test? - Answer-1) Crankcase Test 2) Idle Test 3) BAR Snap Test What is the Crankcase Test (Part 1 Visible Smoke Test)? - Answer-Check for smoke from the crankcase by observing the engine crankcase system for 10 seconds while idling What is the Idle Test (Part II Visible Smoke Test)? - Answer-Check for smoke from the tailpipe at idle What is the BAR Snap Test (Part III Visible Smoke Test)? - Answer-Check for smoke from the tailpipe during BAR Snap Test. There are 3 BAR snaps that must be performed. 1) BAR Snap before TSI or ASM to become familiar with throttle (do not check for smoke)2 & 3) BAR Snap during "Other Emissions related" What RPM range should be reached for BAR Snap Test? - Answer-2,000-3,000 RPMs For how many seconds should the engine be allowed to return to idle between BAR Snaps? - Answerat least 3 seconds When is the Idle Test conducted? - Answer-Immediately after performing the Smog Check emissions test How long should you watch the tailpipe exhaust plume for the Idle Test? - Answer-10 seconds Is water vapor or steam considered visible smoke? - Answer-No
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