|
Tractor Talk Discussion Board |
Diesel opacity tests for road vehicles
[ Expand ] [ View Replies ] [ Add a Reply ] [ Return to Forum ]
Posted by jdemaris on September 23, 2006 at 06:47:12 from (69.67.234.67):
I'm trying to help my son out - I'm in New York and he lives in Colorado. He recently took my 6.2 diesel 1987 Suburban back home with him. Colorado requires a diesel "visible smoke" test to register the vehicle. He failed - but not by much. Test consists of putting the vehicle on a dyno, and measuring visible smoke at simulated highway speeds of 40 MPH, 50 MPH, and 60 MPH (or something like that). He failed only the 40 MPH test and was only sligthly out of range (3% high). The guy in the test shop told my son he might try installing a new air cleaner and come back and try again. At $60 for every test, I don't want to see him spend a fortune with trial-and-error testing. I don't understand why they couldn't just pull the air-cleaner out, and if it then passed - just make him spend $15 on a new element.
Anyway, here in New York - we have no such testing - so I'm not up on possible simple fixes. I could turn the pump down - but I hate to do it (I can't anyway since I'm in New York). The altitude is higher in the Denver, CO area where the Suburban now is - which I assume is part of the problem - especial since the diesel does NOT have a turbocharger (which used to be called an altitude compensator?).
So, I'm asking - anybody out there had similar problems and found easy fixes? I suppose a good fuel additive MIGHT help (I've read the claims), also possibly advancing the injection timing, turning the pump down a bit, etc. But, my son is not an experienced diesel mechanic - he's an electrical engineer. So, I'm hoping for a simple fix. I'm wondering if a heavy kerosene mix would accomplish the same thing as turning the pump down? Kersone is lighter than #2 diesel, has less BTUs, so maybe?
Replies:
Home
| Forums
| Order Support
Today's Featured Article -
New Life for an Old Allis - by Tyler Woods. My friend Jon, has an old '39 Allis Chalmers B. He thought it a marginal tractor that had long since served its time. She smoked terribly and never had much power but he couldn't afford another so he was limping along with what he had. Jon's Allis has a small front loader and though it doesn't carry much, it serves his needs. It was the hard starting and low power that made him think it was time to replace the old girl. Jon called me to help him discover why his tractor wouldn't start
... [Read Article]
Latest Ad:
one 8n and one 9n tractor. totaly restored,pretty much everything is new. one 6ft blade good shape.
[More Ads]
Copyright © 1997-2026 Yesterday's Tractor Co.
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V. Yesterday's Tractors - Antique Tractor HeadquartersWebsite Accessibility Policy |
|
