in my '88 22r-engine, I failed a (Calif) smog with a reading of 2.7 for "CO", and the limit is just 1.0. WHAT could be causing such a Massively high level?


Asked by Jan 31, 2017 at 12:20 AM about the 1988 Toyota Pickup 2 Dr STD Extended Cab LB

Question type: Maintenance & Repair

4 Answers


Carbon monoxide is produced when you burn fuel without enough air. Your engine may be running rich. Are the hydrocarbons also high?

1 people found this helpful.

Here is a read for you ----- carbon-monoxide-CO.cfm


nope, the HC level was fine.....?

1 people found this helpful.

monoxide, you might suspect a bad catalytic converter...possibly plugged, check the amount of exhaust...might be stoppin the show~

1 people found this helpful.

Your Answer:


Looking for a Used Pickup in your area?

CarGurus has 1 nationwide Pickup listings and the tools to find you a great deal.

Postal Code:

Toyota Pickup Experts

  • #1
  • #2
  • #3
    Juan Hernandez
View All

Related Models For Sale

Used Toyota 4Runner
15 Great Deals out of 506 listings starting at $4,500
Used Ford F-150
126 Great Deals out of 11,263 listings starting at $369
Used Ford Ranger
8 Great Deals out of 269 listings starting at $2,995
Used Toyota Corolla
113 Great Deals out of 4,257 listings starting at $1,995
Used Jeep Wrangler
15 Great Deals out of 1,937 listings starting at $5,995
Used Toyota Camry
35 Great Deals out of 2,152 listings starting at $2,995
Used GMC Sierra 1500
77 Great Deals out of 11,146 listings starting at $4,499
Used Chevrolet S-10
4 listings

Used Cars For Sale

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.