Originally Posted by mark460

I bought my truck from a guy in Houston, who just had the truck inspected and it passed. I knew the truck was running like a dog when I bought it and I kept telling the guy the engine needed work. It felt like it was pulling a trailer when I test drove it. I got a good deal on the truck. When I got it home, I check under the hood and there wasn't even a vacuum line going to the advance. I hook up a hose directly to the ported vacuum on the carb, check the timing and it was still way too retarded. I adjust the timing and it runs 100percent better. I don't understand how it passed the inspection with tailpipe sniffer in place. It is hard to work around the inspections these days. VIN number and other info has to be inputted in the computer which i hooked up to some EPA Texas website. Shops don't want to risk it anymore. For F350 trucks, one way is for the inspector to "determine" the overall weight is over something like, 7000lbs and then it is allowed to only do a running test with the sniffer in place, and it won't check for NOx.

But anyway, I can't my truck passed with the timing so out of whack. We all know this testing is politically motivated and is a revenue source. Some states have some strick anti-tampering laws with fines, again, just another revenue generator.

IMO
Mark