ctafoya Report post Posted April 21 Kid got a new to him truck. 94 chevy 1500. 350. Failed emissions. Hydrocarbons were 2.4 and NOX was 4.4. There are no cats on it, and they couldn't see they were missing. Tune up and a tank full of 91? Share this post Link to post Share on other sites
ctafoya Report post Posted April 21 Historical plate maybe? Share this post Link to post Share on other sites
Rhinoaz Report post Posted April 22 Put a pair of high flow cats on it. Should take care of the problem and wont kill power 1 Share this post Link to post Share on other sites
ctafoya Report post Posted April 22 50 minutes ago, Rhinoaz said: Put a pair of high flow cats on it. Should take care of the problem and wont kill power Yeah I was leaning that way. I'd have to take it to a shop though, but its probably gonna be the case. Too low for me to work on. Share this post Link to post Share on other sites
PRDATR Report post Posted April 22 2 hours ago, ctafoya said: Historical plate maybe? Won't do a thing. 1967 and later need emissions. 1 Share this post Link to post Share on other sites
ctafoya Report post Posted April 22 Kids got good taste. Low, but still practical. 1 Share this post Link to post Share on other sites
wildwoody Report post Posted April 22 Register it gila County, no emissions required.. Share this post Link to post Share on other sites
ctafoya Report post Posted April 22 9 hours ago, wildwoody said: Register it gila County, no emissions required.. The jig is up on that. My Tahoe was registered in Alpine. Luckily, I ended up selling it to my father-in-law. DPS came looking to make sure it was there. 1 Share this post Link to post Share on other sites
firstcoueswas80 Report post Posted April 22 I had the same truck, but a 97, lifted in college. The girls loved it, and I loved that. It was a gutless wonder with the lift. Felt like it needed a gear reduction. Share this post Link to post Share on other sites
Roofer Billy Report post Posted April 22 16 hours ago, ctafoya said: Kid got a new to him truck. 94 chevy 1500. 350. Failed emissions. Hydrocarbons were 2.4 and NOX was 4.4. There are no cats on it, and they couldn't see they were missing. Tune up and a tank full of 91? You probably think I'm crazy. But My Grandpa was a mechanic. I had a 88 Chevy Silverado that never would pass emissions. My Grandpa had me buy moth balls crush them up and put about 6 in a full tank of gas. Truck would pass emissions every time and ran better. Share this post Link to post Share on other sites
Lucafu1 Report post Posted April 22 3 hours ago, Roofer Billy said: You probably think I'm crazy. But My Grandpa was a mechanic. I had a 88 Chevy Silverado that never would pass emissions. My Grandpa had me buy moth balls crush them up and put about 6 in a full tank of gas. Truck would pass emissions every time and ran better. I never heard that but I would be interested in the chemistry on that to know. What I can say is denatured alcohol will get your truck to pass emissions (there's other tricks too) if the concentration is high enough. But if you get someone else that does the visual inspection and they see there's no cats then it won't matter. Share this post Link to post Share on other sites
ctafoya Report post Posted April 23 I've heard of the alcohol trick before. Not balsy enough to try it Share this post Link to post Share on other sites
Crazymonkey Report post Posted April 23 If you go the alcohol road the alcohol will burn at a different rate than gas . My custom harley would not pass the stupid emissions crap and my bike mechanic said to use alcohol but don't run it to long as it runs hot. It can cook stuff in a hurry. Share this post Link to post Share on other sites
Lucafu1 Report post Posted April 23 It has a lower stoichiometric ratio than gas so it will have a more efficient combustion (lower emissions). Once you get through emissions you fill up to dilute it since alcohol isnt great for rubber parts. Ive been doing this trick (mostly for others) since the late 90s. Share this post Link to post Share on other sites
CatfishKev Report post Posted April 23 13 hours ago, Roofer Billy said: You probably think I'm crazy. But My Grandpa was a mechanic. I had a 88 Chevy Silverado that never would pass emissions. My Grandpa had me buy moth balls crush them up and put about 6 in a full tank of gas. Truck would pass emissions every time and ran better. At least you won't have any months in your exhaust! Share this post Link to post Share on other sites
