High HC Emissions
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New User
Joined: Nov 2003
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From: OSTERSUND
High HC Emissions
Hi there.
I have just come from the annual checkup (by the goverment) and I had a to high level in the HC emissions.
Someone have any idea?
I´m going to change sparkpluggs and engine oil just to be on the safe side.
The only sign that anything is wrong is that I have irregular idle when the engine is warm, not when I start it in cold weather (below 0 degrees C)
Tiwan
I have just come from the annual checkup (by the goverment) and I had a to high level in the HC emissions.
Someone have any idea?
I´m going to change sparkpluggs and engine oil just to be on the safe side.
The only sign that anything is wrong is that I have irregular idle when the engine is warm, not when I start it in cold weather (below 0 degrees C)
Tiwan
Post Fiend
Joined: Apr 2005
Posts: 5,720
Likes: 5
From: Washington state
welcome back tiwan,
please go the sticky on the first page of Aero forum and pull the codes per the thread.
please post here.
will save expensive parts from guessing
what engine and tranny?
what engine/performance work has been done on the van since the last emissions test?
please go the sticky on the first page of Aero forum and pull the codes per the thread.
please post here.
will save expensive parts from guessing
what engine and tranny?
what engine/performance work has been done on the van since the last emissions test?
Elder User
Joined: Dec 2006
Posts: 830
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From: Kitchener,Ontario,Canada
Originally Posted by Tiwan
Hi there.
I have just come from the annual checkup (by the goverment) and I had a to high level in the HC emissions.
Someone have any idea?
I´m going to change sparkpluggs and engine oil just to be on the safe side.
The only sign that anything is wrong is that I have irregular idle when the engine is warm, not when I start it in cold weather (below 0 degrees C)
Tiwan
I have just come from the annual checkup (by the goverment) and I had a to high level in the HC emissions.
Someone have any idea?
I´m going to change sparkpluggs and engine oil just to be on the safe side.
The only sign that anything is wrong is that I have irregular idle when the engine is warm, not when I start it in cold weather (below 0 degrees C)
Tiwan
Have you looked at a spark plug?
Aeroman.
Former ******
Joined: Nov 2004
Posts: 4,901
Likes: 2
From: Salt Lake City, Utah
I say give the van a complete engine tune up, new motorcraft/Autolite plugs and wires (don't use any other brand unless you want problems Auto Parts Fast at RockAuto has some of the best prices), if you have 3.0L w/distributor, replace the cap and rotor. Check the ignition timing with the spout plug removed. Make sure the spark plugs are properly tightened otherwise carbon can get in the threads. Replace the O2 sensor if it has not been done in the last 80,000 miles. Clean the MAF sensor with an approved cleaner (will require security torx bits to remove). Do not touch the element, otherwise it may break. Check for vacuum leaks and replace any soft or brittle hoses. The Engine Coolant Temp sensor may also be bad, replace with a Motorcraft sensor. Make sure the cooling system is working correctly. If that doesn't resolve the issue, let us know and we will see what we can do to help you further.
Elder User
Joined: Dec 2006
Posts: 830
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From: Kitchener,Ontario,Canada
It might be as simple a fix as new plugs & wires. HC is basically unburnt fuel in the Ex gas. Need to fix it because it's also not good for your convertor(s)! (or your wallet).
ATB Aeroman.
ATB Aeroman.
Posting Guru
Joined: Aug 2007
Posts: 1,036
Likes: 2
From: Portland, Oregon
where do you guys get these motorcraft parts? i can't find any thing about motor craft on the auto stores online place...
OH what about msd wires?
OH what about msd wires?
Trending Topics
New User
Joined: Mar 2008
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Straight from Ford DCRB, you can find certain parts from Motorcraft at certain places but most of the big stuff ( Motorcraft ) is dealer only type of stuff,... very bad for personal wallets
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Joe Kucinski
Posting Guru
Joined: Aug 2007
Posts: 1,036
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From: Portland, Oregon
ouuuuuuuuuuuuuuuuuuuch...... dang i'm glad i got a new job then... so no no to msd 8mm wires then? they do wonders for my friends civic.... well... till he bounces off the rev limiter doin a burn off and pop's one of the wires off the dizzy cap...
sorry bout thread jackin...
sorry bout thread jackin...
Former ******
Joined: Nov 2004
Posts: 4,901
Likes: 2
From: Salt Lake City, Utah
Auto Parts Fast at RockAuto has motorcraft wires, and a lot of other motorcraft parts. The price tag is very reasonable too. Around $30 for a set.
Former Vendor
Joined: Jul 2005
Posts: 45
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RockAuto also has a toll free customer service number (866-762-5288) which is staffed from 7AM to 9PM CST Mon-Fri and 8AM to 3PM on Sat and Sun. Just call if you have any questions about the MotorCraft parts listed in the catalog at Auto Parts Fast at RockAuto
Post Fiend
Joined: Oct 2005
Posts: 5,242
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From: Kiev, Ukraine
Not only missfire mentioned by all before, but lean fuel:air ration cause hight CxHx emissions w/o high CO emission too. Later engines having 2 oxy sensors per bank birn all in additional cat, but yours does not.
So be sure oxy sensor and MAF are OK too, but replace plugs, wires, distributor cap (if exist, some engines have distributor less ignition system), clean MAF and be sure fuel pressure is OK.
And if CxHx emissions are higher normal after all check fuel pressure, clean ore replace injectors, check Oxy sensor, fuel pump
So be sure oxy sensor and MAF are OK too, but replace plugs, wires, distributor cap (if exist, some engines have distributor less ignition system), clean MAF and be sure fuel pressure is OK.
And if CxHx emissions are higher normal after all check fuel pressure, clean ore replace injectors, check Oxy sensor, fuel pump
Thread Starter
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New User
Joined: Nov 2003
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From: OSTERSUND
Thank You all
Hi, I did a thorough engine wash, and replaced sparkpluggs, wires and cleand the MAF sensor.
Then the emissions fell from around HC 600 ppm to a legal level about 25.
My van is now running smoother than in a long time.
Thank´s for all tips.
Tiwan
Then the emissions fell from around HC 600 ppm to a legal level about 25.
My van is now running smoother than in a long time.
Thank´s for all tips.
Tiwan