High hydrocarbon (HC)
#1
TECH Regular
Thread Starter
Join Date: Mar 2005
Location: saudi arabia
Posts: 426
Likes: 0
Received 0 Likes
on
0 Posts
High hydrocarbon (HC)
What is the average(acceptable) reading of the HC ?
Came from emission inspection and car failed due to High hc !!
what cause high HC ?
what to check first ?
mods : cam,boltons, no cats , no egr
Came from emission inspection and car failed due to High hc !!
what cause high HC ?
what to check first ?
mods : cam,boltons, no cats , no egr
#2
TECH Enthusiast
iTrader: (22)
Join Date: May 2007
Location: DFW, Tx
Posts: 739
Likes: 0
Received 0 Likes
on
0 Posts
With no cats, could be causing it. I know once I took the cats off my LT car, was tough passing inspection after that. Some advice I was given, take the car for about a 30mi ride just before attempting inspection, include highway driving.
All else fails, need to find a 'friendly' inspection house. What I ended up having to do.
*Edit: Did a quick google search, this should help:
http://www.smogtips.com/failed-high-hydrocarbons-HC.cfm
All else fails, need to find a 'friendly' inspection house. What I ended up having to do.
*Edit: Did a quick google search, this should help:
http://www.smogtips.com/failed-high-hydrocarbons-HC.cfm
#3
TECH Regular
Thread Starter
Join Date: Mar 2005
Location: saudi arabia
Posts: 426
Likes: 0
Received 0 Likes
on
0 Posts
I passed emissions after few runs at wot and ac on. If high hc is a fuel problem I need to findout the reason for that !!
Saw the link ,
Does anyone have an idea where to start ? what to check first
Saw the link ,
Does anyone have an idea where to start ? what to check first
#4
Launching!
iTrader: (8)
Join Date: Feb 2013
Location: Newport News, VA
Posts: 253
Likes: 0
Received 0 Likes
on
0 Posts
"4. Defective Catalytic Converter - A defective catalytic converter (CAT) may be responsible for high HC, CO, and NOx emissions. The Catalytic Converter, commonly referred to as the CAT is a component designed to continue the combustion process within itself and emit a more thoroughly burned and less harmful emissions containing exhaust. The most accurate way to find out if your vehicle's CAT is working efficiently is by using an exhaust gas analyzer. Unfortunately this tool is fairly expensive. Testing the CAT should be conducted at a smog check repair station."
By defective they mean your lack there of, unless for some reason you're running lean, you probably need to put the cat back on, or find a inspector that doesn't care about emissions.
By defective they mean your lack there of, unless for some reason you're running lean, you probably need to put the cat back on, or find a inspector that doesn't care about emissions.
#7
TECH Regular
Thread Starter
Join Date: Mar 2005
Location: saudi arabia
Posts: 426
Likes: 0
Received 0 Likes
on
0 Posts
let me that !!
Trending Topics
#9
9-Second Club
iTrader: (1)
You can google what you want, but I had my own exhaust 4 gas & 5 gas exhaust analyzers for over 30 years, I can tell you that is the case. If you are going to tune modified vehicles to pass emissions you have to know these things. Endless testing is part of the job. Driving cars, loaded at part throttle will open your eyes you won't learn on the Internet. Sometimes you just have to step into the real world. LOL
#10
TECH Regular
Thread Starter
Join Date: Mar 2005
Location: saudi arabia
Posts: 426
Likes: 0
Received 0 Likes
on
0 Posts
You can google what you want, but I had my own exhaust 4 gas & 5 gas exhaust analyzers for over 30 years, I can tell you that is the case. If you are going to tune modified vehicles to pass emissions you have to know these things. Endless testing is part of the job. Driving cars, loaded at part throttle will open your eyes you won't learn on the Internet. Sometimes you just have to step into the real world. LOL
thats great, but I'm not good with tuning. and I needed to know what you mean by Advanced timing.
#12
TECH Regular
Thread Starter
Join Date: Mar 2005
Location: saudi arabia
Posts: 426
Likes: 0
Received 0 Likes
on
0 Posts
No , I just want to fix the High hc problem. Strong smell at startup , which is also dangerous for health.