So I got my car all warmed up and ran it for 15 minutes on the highway at running temp. I got to the emissions testing station and failed the HC test. Composite was .80 GPM and I put out 1.08 GPM. I have replaced many emissions parts including a new hi-flo cat, Bosch O2 sensor, PCV valve, MAP sensor, fuel pump relay, fuel filter, spark plugs, wires, module, rotor, and cap. I need some advice on what else it could be. I still get that smoke when I start it up but that should not be contributing to the problem. I do notice some build up of stuff where my pipe mates up to the cat. Any advice would help. Thanks

Paul

 

Hydrocarbons are basically unburned fuel, so something is causing your fuel mixture not to burn. It could be a misfire or low compression. Do you have a misfire? Have you tried doing a compression check on the cylinders?

 

I haven't done either. I think it could be misfiring because it feels like itdoes it at idle sometimes. What is one way to correct this? It could also possibly be the timing because most people have told me that the factory timing was never really perfect. Thanks for the info.

 

put in a new 195 degree thermostat. the hotter the engine, the better its ability to burn fuel.

 

Blue smoke at startup? Maybe needs valve guides. Also, before you spend too much money getting your smog right, check with your department of motor vehicles and see if there is a limit on how much they expect you to pay to bring your vehicle into compliance. Here in California there is a maximum and then you can get an exemption. A lot of people dont know about that one!!

 

Excuse me? That would be an entire new engine for me considering the pistons, heads, intake carb, ALL of the non-existant emissions equipment...etc?

Is a Florida car with muscle, but in ordr to drive it on a military installation, have to have it smogged...but If I could get away with it, money would be no object unless it's above this maximum you're talking about...

Fill me in!
Tom

 

What I mean't was, some older cars in california are still compeled to meet our very strict emissions rules. Some of them never will or can't. That doesn't mean you can't get your car legal for the road. Our D.M.V. has a limit for the amount of money needed to be spent on a car trying to get it legal. So for instance, if you were to spend $550 at a smog station and the car still would not meet the regulations, the DMV would review the smog work history and then give you an exemption. What I'm hearing from you is you have aftermarket stuff in and bolted to your engine? If that is the case you would not qualify for the exemption unless you went back to all stock and still could not get it smogged. Clear as mud?

 

Oh yeah. Clear as mud. That would be nice though, ...How much can I buy a new car for? LMAO The entire car is aftermarket! Great...guess I'll just tow it to the track for the next year until I move out of here. LOL