NO=NOx? bi-product of combustion temperatures. I'd retard the ignition timing, but I doubt you have a way to do it.
how to lower hydrocarbons for emissions test ?
- Thread starter jaker04
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You got the hc down, is the EGR working ?
It must be the e85 causing a lean condition.
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.
Absolutely not. Do not fill it with e85. Read earlier posts
Too much e85. High NO is a known effect at high doses.
Way too much e85. More is not always better. Should have used advice that has already been tested.
what is the correct ratio amount then? It supposed to 30% e-85 max? then rest a full tank of 87 gas?
Basically, warm up the car? I spent 1 hour driving to get the cat and engine hot before my test.
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.
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.
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.
I would not mess with e85. Your car is not made for it and cannot adjust timing. You’re essentially guessing how much to add. Just because it worked for someone here at certain proportions, doesn’t mean it will work for you.
How much time and money, since you have to pay for each emission test, are you going to waste experimenting with e85 mixes?
Your car seems to need several things checked and diagnosed. I highly doubt a hack or mechanic in a can will solve your issue.
How much time and money, since you have to pay for each emission test, are you going to waste experimenting with e85 mixes?
Your car seems to need several things checked and diagnosed. I highly doubt a hack or mechanic in a can will solve your issue.
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.
Hondas are known to have gunked up EGR passages if your engine has it. Test the EGR valve with a Mityvac pump or get a length of CLEAN vacuum tubing, attach it to the valve after disconnecting the existing hose and suck on it, engine should stumble or stall with vacuum applied. If it doesn’t, you have a bad valve or clogged passages. AFAIK, there’s a plate or plugs you need to drill out to gain access to the passages. Clean them out with carb cleaner and a wire tool, then reinstall the plate or install new plugs.
Get a new car…someone had to say it.
You may just need a new cat due simply to the age of the car.
For what it’s worth… I’ve used denatured alcohol in a few cars that had issues passing emission testing and it worked for me. In my own experiences I would add 1/2 gallon or so to 1/4 tank of fuel, take the vehicle out and run it over 4000 rpm’s for an extended drive and then take it for testing.
For what it’s worth… I’ve used denatured alcohol in a few cars that had issues passing emission testing and it worked for me. In my own experiences I would add 1/2 gallon or so to 1/4 tank of fuel, take the vehicle out and run it over 4000 rpm’s for an extended drive and then take it for testing.
I am the King of getting an oil-burning 95 Accord through dyno emissions. One center kicked me out for clogging their filters. That was towards the end of the car's life, it was unpassable by then. I think I still have the slip.
Fresh oil. Take the air filter out. Bottle of Guaranteed to Pass. Retard the distributor, it will get that exhaust HOT. These are some of the tricks. Bump the tires up to 50PSI to cut the rolling resistance down.
Fresh oil. Take the air filter out. Bottle of Guaranteed to Pass. Retard the distributor, it will get that exhaust HOT. These are some of the tricks. Bump the tires up to 50PSI to cut the rolling resistance down.
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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.
