i just spent yerterday puting on all my old stuff back on my 93 hatch. Catalytic Converter egr valve stock intake stock Exhaust Manifold new o2 sensor plugs wires and roter cap. took it down this morning to test and of course it failed. the only thing that failed was the co @ the 15mph test. Max is 0.59 i was running at 0.69. The tech said that i am running to rich on fuel. question is just how long does it take for the computer to adjust the richness of the fuel? can i do it my self?
I have had a 421 exhaust manifold and cold air intake running on this motor for the last two years and only put 50 miles on before the test.
After i failed i found this on google and just wanted to know what you guys think?
First in order to pass smog you should get everything back to stock, even with a cold air intake your engine will most often fail.
Second run a few onces of acetone in the tank, the formula is 2-3 oz's for ten gallons of gas, run 2 tanks though using this formula and then on the day of the test add 3 oz's of 100% pure acetone to the tank and them fill up, in that order. Take the car for a drive and get it nice and hot and then go have it smogged.
Don't use "Nail polish remover acetone" You must use the 100% pure stuff, you can buy it at a parts store or hardware store, its will say "100% Acetone" on the label. The more actetone the better the emmisons but the worse the fuel mileage
.
I brough my 91 civic though yesterday and i got amazing numbers, less than half the allowable numbers for NOX and HC and the CO level was at 0.5. Off course i removed the cold air intake and put the stock setup back on and removed the fart can and put the stock muffler back on. Thank God for muffler clamps!!
A few years ago i thought this was a bunch of crap but i've been using actetone every year since and it works in all my older vehilces.
This car has almost 254,000 Kms on it, or 155,000 miles. The only things i've replaced were spark plugs, wires and cleaned out the throttle body and off course the stock items i mentioned above.
I have had a 421 exhaust manifold and cold air intake running on this motor for the last two years and only put 50 miles on before the test.
After i failed i found this on google and just wanted to know what you guys think?
First in order to pass smog you should get everything back to stock, even with a cold air intake your engine will most often fail.
Second run a few onces of acetone in the tank, the formula is 2-3 oz's for ten gallons of gas, run 2 tanks though using this formula and then on the day of the test add 3 oz's of 100% pure acetone to the tank and them fill up, in that order. Take the car for a drive and get it nice and hot and then go have it smogged.
Don't use "Nail polish remover acetone" You must use the 100% pure stuff, you can buy it at a parts store or hardware store, its will say "100% Acetone" on the label. The more actetone the better the emmisons but the worse the fuel mileage
.
I brough my 91 civic though yesterday and i got amazing numbers, less than half the allowable numbers for NOX and HC and the CO level was at 0.5. Off course i removed the cold air intake and put the stock setup back on and removed the fart can and put the stock muffler back on. Thank God for muffler clamps!!
A few years ago i thought this was a bunch of crap but i've been using actetone every year since and it works in all my older vehilces.
This car has almost 254,000 Kms on it, or 155,000 miles. The only things i've replaced were spark plugs, wires and cleaned out the throttle body and off course the stock items i mentioned above.
