NO=NOx? bi-product of combustion temperatures. I'd retard the ignition timing, but I doubt you have a way to do it.
You got the hc down, is the EGR working ?I rested today with 3 gals of e85, 1 gal of 87 and failed due to NO gross polluter.View attachment 204900
I already had 87 gas around 3 gallons existing and added in 1 gallon of 87 to mix with 3 gallons of e-85. This would equal a 1:1 ratio, but I don't know why the NO went crazy.It must be the e85 causing a lean condition.
Absolutely not. Do not fill it with e85. Read earlier postsIs this known as ethanol gas too? Since my engine is designed to take 87 would e85 damage my car? I am supposed to do the smog check with a full tank of e85?
Too much e85. High NO is a known effect at high doses.I already had 87 gas around 3 gallons existing and added in 1 gallon of 87 to mix with 3 gallons of e-85. This would equal a 1:1 ratio, but I don't know why the NO went crazy.
NoI've already Redline fuel system cleaner with a full tank of gas and used up all the gas. I added in CRC guaranteed to pass last week and I am almost done with this tank of gas too. Will a clean injector lower HC?
Way too much e85. More is not always better. Should have used advice that has already been tested.I rested today with 3 gals of e85, 1 gal of 87 and failed due to NO gross polluter.View attachment 204900
what is the correct ratio amount then? It supposed to 30% e-85 max? then rest a full tank of 87 gas?Way too much e85. More is not always better. Should have used advice that has already been tested.
Basically, warm up the car? I spent 1 hour driving to get the cat and engine hot before my test.In simple terms, it means the ECU is ignoring the input from the oxygen and maf sensors and runs in the enriched mode, sort of like using a choke in the carburetor days. But that is bad for emissions.
Once the vehicle reaches certain operating temperature, the ECU switches to the “closed loop” mode where it reads the input from the oxygen and maf sensors and adjust the fuel/air mixture accordingly.
Combustion chamber temperatures too high causing your high NOX reading.. Stop using the E85 and check that your EGR valve is working. If its vacuum operated, make sure vacuum is applied during cruising , you should never have EGR vacuum at idle.. Make sure the EGR passages are not blocked with carbon buildup by applying vacuum to the valve at idle to open it , the engine should die if the passages are clear and the valve itself is working.I rested today with 3 gals of e85, 1 gal of 87 and failed due to NO gross polluter.View attachment 204900
What worked for me and others is 2 gal e85 into 1/4 tank of fuel. Figure 15-18 gal average car tank size so your 30% is pretty close. I put 1 gal of regular fuel after the 2 gal of e85 to wash it down. Do not fill the tank until after the test. Too much and you raise NO to failure as you found out. Too little and will have a negligible effect on HC.what is the correct ratio amount then? It supposed to 30% e-85 max? then rest a full tank of 87 gas?
I added 3 gal of e85 into a 1/4 tank. the 1/4 tank already had 87 gas in it. I added another tank of 87 gas. My ratio was 1:1 for each gas, 87 gas, and e85. After this, I was around half full. My gas tank maxes at 17 gallons.What worked for me and others is 2 gal e85 into 1/4 tank of fuel. Figure 15-18 gal average car tank size so your 30% is pretty close. I put 1 gal of regular fuel after the 2 gal of e85 to wash it down. Do not fill the tank until after the test. Too much and you raise NO to failure as you found out. Too little and will have a negligible effect on HC.
Well, in your case then you may be too far off for e85 to get you by. Looking at your #'s you failed HC and NOx at the same time. Not a good sign. Time to visit a mechanic unfortunately. You probably need a catalytic converter if no other issues are present. They don't last the life of the car in CA even if perfectly maintained. The tests are too strict.I added 3 gal of e85 into a 1/4 tank. the 1/4 tank already had 87 gas in it. I added another tank of 87 gas. My ratio was 1:1 for each gas, 87 gas, and e85. After this, I was around half full. My gas tank maxes at 17 gallons.
Parents had a vehicle fail because they drove it just 2 miles to the testing place, then it sat for probably 20 minutes. Truck probably had 20k on it. I told my mom to take it for a good drive then go back. Passed with flying colors.If only hydrocarbons are outside the test values, then it could be an issue of just getting it burned off. I would give it some beans on the highway, maybe stay in lower gear to bring the RPM high. Also make sure the vehicle was driven for at least 20-30 minutes before doing the test.