We are trying to get the 1994 80 Series through Colorado Front Range Emissions and are having issues. The car has 240k miles and has recently been baselined. Oil is 15w-40 with under 500 miles, it was burning significant amounts with 5w-30 on the trip out but shown no consumption with the new oil Delo XSP.
Bank 1 O2 Sensor is new, bank 2 is 40k miles old and tests out fine. There is an intermittent CEL 25 that I suspect is wiring.
The car is un modified with standard wheels and tires and the test is a rolling treadmill.
The first test she rolled right into the bay without stopping the engine. It passed tailpipe, but failed on the gas cap (which baffles me). On the second two runs it failed on CO. In the second run she shut down the engine waiting in line. The last run was supposed to be on E85 mix but there was some confusion and it was only 85 regular. The car was run for about 20 minutes prior to entering the station an left on in line.
What we have done: smoke test - no leaks, confirm timing a 3 eg BTDC, added 6 gallons of E85 to 1/4 tank of regular.
Any insights? Here are the results as well as a graph from Run #2
I have added photos of the 3k mile old plugs from a compression/leak down test run about 100 miles ago and after the trip cross country.
Bank 1 O2 Sensor is new, bank 2 is 40k miles old and tests out fine. There is an intermittent CEL 25 that I suspect is wiring.
The car is un modified with standard wheels and tires and the test is a rolling treadmill.
The first test she rolled right into the bay without stopping the engine. It passed tailpipe, but failed on the gas cap (which baffles me). On the second two runs it failed on CO. In the second run she shut down the engine waiting in line. The last run was supposed to be on E85 mix but there was some confusion and it was only 85 regular. The car was run for about 20 minutes prior to entering the station an left on in line.
What we have done: smoke test - no leaks, confirm timing a 3 eg BTDC, added 6 gallons of E85 to 1/4 tank of regular.
Any insights? Here are the results as well as a graph from Run #2
I have added photos of the 3k mile old plugs from a compression/leak down test run about 100 miles ago and after the trip cross country.
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