TXBII
New Member
- Joined
- Sep 17, 2013
- Messages
- 18
- Reaction score
- 0
- Points
- 1
- Vehicle Year
- 1989
- Make / Model
- Ford
- Engine Size
- 2.9 for now..
- Transmission
- Automatic
Hey guys.. pretty new to the forum and looking for some help. I bought a 1989 BII and have been getting it ready to be road ready. After getting it running, I thought to be pretty decent, I went to have it inspected and it failed on the Emissions Test. Nox(ppm) to High.
1st Test Run results:
HC (ppm) 17 High Speed 23 Low Speed PASS
C0 (%) .02 .02 PASS
C02 (%) 14.4 14.4
02 (%) 30.2 27.1
Nox(ppm) 2920 (standard 1161) 2623 (standard 1262) FAIL
Dilution 14.42 14.43 PASS
So from the recommendation from the Inspection Guy, Muffler Shop, and Mechanic I had a new CAT put on and they said that would fix it. Well it didn't. The numbers a little better but still way to high..
2nd Test Run results:
HC (ppm) 20 High Speed 20 Low Speed PASS
C0 (%) .02 .02 PASS
C02 (%) 14.5 14.4
02 (%) 33.9 31.3
Nox(ppm) 2328 (standard 1161) 2419 (standard 1262) FAIL
Dilution 14.52 14.42 PASS
After I had the CAT installed I drove the BII straight to my house (7 miles) to pick up the paperwork for the retest and then 15 miles down the highway to the inspection place. I never turned the BII off so it had been running since I left the Muffler shop. Was told to do that to get the CAT nice and Hot.
The only thing I have noticed is while at the Inspection shop sitting on the dyno it was idling smooth and then all the sudden acted like it started missing. And it does have a little "ping" to it when you stomp on the gas, maybe slightly out of time? Any help would much be appreciated, not all that mechanical but trying to learn as much as I can. Thanks guys!!
1st Test Run results:
HC (ppm) 17 High Speed 23 Low Speed PASS
C0 (%) .02 .02 PASS
C02 (%) 14.4 14.4
02 (%) 30.2 27.1
Nox(ppm) 2920 (standard 1161) 2623 (standard 1262) FAIL
Dilution 14.42 14.43 PASS
So from the recommendation from the Inspection Guy, Muffler Shop, and Mechanic I had a new CAT put on and they said that would fix it. Well it didn't. The numbers a little better but still way to high..
2nd Test Run results:
HC (ppm) 20 High Speed 20 Low Speed PASS
C0 (%) .02 .02 PASS
C02 (%) 14.5 14.4
02 (%) 33.9 31.3
Nox(ppm) 2328 (standard 1161) 2419 (standard 1262) FAIL
Dilution 14.52 14.42 PASS
After I had the CAT installed I drove the BII straight to my house (7 miles) to pick up the paperwork for the retest and then 15 miles down the highway to the inspection place. I never turned the BII off so it had been running since I left the Muffler shop. Was told to do that to get the CAT nice and Hot.
The only thing I have noticed is while at the Inspection shop sitting on the dyno it was idling smooth and then all the sudden acted like it started missing. And it does have a little "ping" to it when you stomp on the gas, maybe slightly out of time? Any help would much be appreciated, not all that mechanical but trying to learn as much as I can. Thanks guys!!
Last edited: