Smog high hc

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August undefined, 2024

http://forums.pelicanparts.com/101-projects-discussion-forum-bmw-3-series/724217-smog-failed-15mph-only.html Web14 Sep 2024 · View Full Version : Failed California Smog, High HC at 25 mph, barely made HC at 15 mph. Bimmersaurus. 09-07-2024, 01:03 PM. I just failed smog, passed everything expect for high HC at 25mph (barely made HC at 15 mph), and need suggestions on how I can pass. Car idles and drives fine.

Failed Smog: What causes high emissions, HC,CO,NO JUST …

Web24 Jun 2024 · High HC and high NO. And while the failure points to a bad EGR system, I am absolutely certain the EGR system is functioning as it should. ... Causes of High NOx Emissions. NOx (or nitrogen oxide) is a chemical in automotive exhaust that gets created when the temperature inside a vehicle engine's combustion chamber exceeds 2,500 … Web4 Sep 2015 · HC (max) 55 // 39 HC (mea) 135 // 68 indicates a possible lean miss CO (max) 0.50 // 0.48 CO (mea) 0.36 // 0.16 NO (max) 437 // 724 NO (mea) 1513 // 1061 would also fit the profile of a lean miss/high combustion temps I know that it's strange to have both high NO & HC with elevated CO as well! flagstaff to new orleans

CA SMOG, HIGH NOx - NAXJA Forums -::- North American XJ …

Web8 Jun 2024 · The emissions limits to be met are specified for both the fast and normal idle tests. At fast idle, CO must be at or less than 0.2%, HC at or less than 200 parts per million (ppm), and the lambda value (1) must be between 0.97 and 1.03. At normal idle, CO must be at or less than 0.3%. Web6 May 2011 · Unfortunately, it failed....bad it seems. Readings were: HC GPM: Reading was 3.6936 and limit is 1.2000 - FAILED. CO GPM: Reading was 19.2444 and limit is 20.0000. CO2 GPM: 451.1259. NOx GPM: Reading was 5.8633 and limit is 3.0000 - FAILED. This was done in CO on a dyno, OBD II tested. No check engine light on at the time but I did have … http://myplace.frontier.com/~capriclubchicago/tips/SmogFaq5.html flagstaff to las vegas road trip

Smog - Fix High HC - Hydrocarbon Toyota Nation Forum

SOLVED: Smog failure High HC

Web27 Aug 2005 · High HC + High CO would indicate a rich mixture, high HC w/ normal or low CO would indicate a lean mixture. High 02 would confirm this. You could have a plug that's not quite firing at low RPM, or something to that effect that's causing it to misfire at idle, maybe not enough to detect but enough for it to not pass smog. Web30 Nov 2024 · A high HC reading means the test found high HC (hydrocarbons) in your emissions. In other words, too much gas is left in the exhaust after combustion. What causes a car to fail a smog test? Vehicle registration renewal is costly enough without having to pay for additional repairs resulting from a failed smog test. A common reason … canon pixma mg3550 troubleshootingWeb13 Aug 2003 · High HC is either a WAY rich condition (typically 400 or 500 ppm) or secondary ignition problem, ie: misfiring (1200 to 2500 ppm) An overly lean condition may cause a misfire and also result in high HC. Did you get these readings from a test station? Most of the IM 240 results are measured in grams per mile. Steve canon pixma mg3600 print head alignment

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Smog high hc

Web17 Dec 2005 · The car has failed it's MOT on just the CO (carbon monoxide) output. Everything else was OK. The limit set by the MOT Tester was 0.3%, the actual emissions on 2 Fast Idle and 1 Normal Idle test ... WebRunning into high HC in my emissions. Failing at 77 when max is 54. I do usually have a CEL for P0445 which is a Large Evap Leak. I tested once just going in while the car was hot and CEL was off and it failed at a 74, second time (free retest) I used cataclean and octane booster but failed with a HC of 77 (this was recommended by the smog guy).

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Web4 Nov 2010 · Hi HCs and CO would indicate a overly rich mixture exiting your tailpipe. Things to check/replace -Spark plugs -Dizzy cap -Dizzy rotor -Ignition timing -Engine air filter -O2 sensor -Make sure PCV/breather hose is not obstructed. (responsible for 20% of air volume necessary to maintain healthy stoichometry at idle) Web3 Aug 2024 · It had high HC at both idle and 2500 (idle was worse). I don't recall the exact numbers, but they weren't really bad. It has new plugs and wires and is running well, …

WebIn this video I go over how you can diagnose excessive amounts of Hydro Carbons (HC), Carbon Monoxide (CO) and Nitrogen Oxide (Nox) in your exhaust. I go over how a rich or lean condition can... Web8 Jun 2011 · 111.Note: If a vehicle meets the CO requirement at its normal idling speed but fails the HC check, re-check the HC level at a high idle speed of 2000rpm. If the HC reading is 1200 ppm or less, the vehicle will meet both the CO and HC requirements. . the CO requirement must be met with the engine running at its normal (low) idling speed

Web17 Nov 2005 · Running rich (O2 sensor, MAP sensor) -> high HC, high CO Bad cats -> potentially high HC, CO, or NO, not necessarily at the same time ... My 94 with the hi-boost CTSC and Comptech I/H/E failed smog the previous week for having HC levels too high at 1500 rpm. Everything else was okay though. Web20 Feb 2010 · After $200, and a new front oxygen sensor. it failed SMOG test AGAIN. The results are the same. High hydrocarbons. (I should have done it myself but that's another story.) HC 100 PPM at 15 mph, 90 PPM at 25 mph maximum allowed is 58 and 42 respectively. CO 0.65% 0.62% maximum 0.73 and 0.88.

WebTip #3: Checking the operation of the oxygen sensor and feedback control system should always be a priority anytime a vehicle fails an emissions test due to high HC or CO. Tip #4: Keeping your oxygen sensor (s) fresh may improve fuel economy as much as 10-15 percent (which can save $100 each year in fuel costs on average).

Web7 Dec 2004 · It forms when nitrogen (78 percent of the air we breathe) combines with oxygen (21 percent of the atmosphere), which can happen only at very high combustion … flagstaff to north carolinaWeb9 Jan 2014 · The 4.2L Jeeps re famous for leaking Pulse AIR injection systems, flooding the cat with air, disabling the NOx reduction. The 4.2 is also famous for Vacuum lines breaking, leaking and this can cause the EGR to not function, … flagstaff to oatman azWebFailed CA smog: High HC @ low speed. Hey guys, I need some help, I have a 95 miata with 128,574 miles, and I recently failed smog twice. I am running high on HC on low speed but I pass everything else. I got a fresh head around 5k ago. (including coils, cams, lifters, and so on) After I failed the first test, I did an oil change, air filter ... flagstaff to las vegas shuttleWeb8 Feb 2010 · I have a 95 civic coupe with a 1.6L d16z6. I am failing Texas emissions test with a high HC level and high Nox level. Passing HC level at high speed is 147 and low speed is 152. First test high speed result 284, low speed 295. Second test high speed 279, low speed 306. Passing Nox level at high speed is 1072 and low speed is 1186. flagstaff to los angeles flightsWebAgain, older cars are allowed more freedom although I find that most any car should be able to run under 400 PPM. My 1923 Haynes runs at 300 to 350 ppm HC and 4.0% CO. High HC readings are a little more challenging to trouble shoot because there are so many possible causes including a mixture or worse, a cylinder balance problem. Carbon Dioxide: flagstaff to moab mapWeb5 Nov 2024 · The criteria pollutant emissions generated from fuel combustion by internal combustion engines (ICE) include nitrogen oxides (NO and NO 2, together called NO x), … canon pixma mg3600 wireless setup downloadWeb13 May 2014 · HC is unburned fuel. CO is partially-burned fuel. NOx is "oxides of nitrogen (assorted)", and results from elevated combustion temperatures, dissociating the molecular nitrogen in the air and oxidising it (which has sod-all to do with fuel. Atmospheric air is roughly 75% molecular nitrogen.) canon pixma mg3600 scanner software download