Truck failed emissions

[Lattimer]

Since I recently registered my truck, I had to take it through emissions inspection. I was actually a week or so past the deadline, but they aren't too bad on that.

They only do the sniffer at idle here. Failed on hydrocarbons.

HC reading 1511 standard 700
CO% reading 0.56 standard 7.00

CO2 reading was 12.1, and O2 shows 3.9.

Engine is a 1968 327 with an Edelbrock 1407 carb.

So, I did a little reading and then hooked up my vacuum gauge and timing light. 15" vacuum and timing looks like 2 after TDC. WTF!!!!!!! Damn distributor moved on me. I had it set at 6 before TDC when I put it all together. I had noticed the idle seemed to drop a little on me, and yesterday it backfired through the carb once. Now I know why.

Set the timing back to 6 before, have 18 on the vacuum. Decided to go 8 before TDC and I have 22 vacuum now.

Gonna run it back through emissions in the morning and see what I get. Hopefully the timing out that far is what caused the HC to be so high. From what I read common causes of high HC with low CO would be a vacuum leak or timing out severely.

Anybody have any experience with this and have a guess if this will fix it??



For those who don't know, emissions check is free in NJ at the state facility. Had a couple cool people there.....the guy who ran the sniffer proclaimed my truck "b1tchin!".....LOL.