Go Back   iRV2 Forums > iRV2.com COMMUNITY FORUMS > Vintage RV's
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
 
Thread Tools Search this Thread Display Modes
 
Old 03-24-2007, 08:29 PM   #1
Junior Member
 
Join Date: Mar 2007
Location: Tempe, AZ
Posts: 4
Hi All.. we took out New To Us 1984 Rockwood Class A through Emission today and she failed...
I'm pretty handy with cars and such, but don't know emissions much at all...
Here's what the readings were... if anyone can offer some insight on what I need to check out tomorrow, I'd be most grateful...

Loaded STD Result Idle STD Result
HC 100 300 Pass 1584 300 Fail
CO 0.13 3.00 Pass 0.14 4.00 Pass

Everything is AWESOME, except HC's at Idle...
She felt like she was running rough, maybe had a miss... At this point, I'm figuring on pulling all the plugs and seeing if I have one or two fouled. Make sure I don't have any burned plug wires, check the cap and rotor, etc... Any other thoughts??

Thanks all!!

Ron & Ember
__________________

__________________
1984 Rockwood 34' Class A

P30 Chassis
AZ_Ron is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 03-24-2007, 08:29 PM   #2
Junior Member
 
Join Date: Mar 2007
Location: Tempe, AZ
Posts: 4
Hi All.. we took out New To Us 1984 Rockwood Class A through Emission today and she failed...
I'm pretty handy with cars and such, but don't know emissions much at all...
Here's what the readings were... if anyone can offer some insight on what I need to check out tomorrow, I'd be most grateful...

Loaded STD Result Idle STD Result
HC 100 300 Pass 1584 300 Fail
CO 0.13 3.00 Pass 0.14 4.00 Pass

Everything is AWESOME, except HC's at Idle...
She felt like she was running rough, maybe had a miss... At this point, I'm figuring on pulling all the plugs and seeing if I have one or two fouled. Make sure I don't have any burned plug wires, check the cap and rotor, etc... Any other thoughts??

Thanks all!!

Ron & Ember
__________________

__________________
1984 Rockwood 34' Class A

P30 Chassis
AZ_Ron is offline   Reply With Quote
Old 03-25-2007, 09:21 AM   #3
Community Moderator
 
"007"'s Avatar


 
Nor'easters Club
Workhorse Chassis Owner
iRV2 No Limits Club
Join Date: Oct 2004
Posts: 26,781
Welcome AZ-Ron to irv2 and the Vintage forum
You sound like your on the right track new plugs and wires. Could be distrubiter cap and points.
I will put your question down in forum below may have some direct answers for you.
Enjoy the forums and do post often.
__________________
98KSCA, 99MACA, 03 KSCA-3740- 8.1 Chev-- ALLISON Trans, now in good hands
VISIT the NEWMAR QUICK TIPS & EASYMODS 1 & 2
QUICK TIPS # 3
RV SYSTEMS & APPLIANCES & RECALLS --- TECH INFORMATION
"007" is offline   Reply With Quote
Old 03-25-2007, 04:55 PM   #4
Senior Member
 
GaryKD's Avatar
 
Newmar Owners Club
Join Date: Jul 2006
Location: Wellington, Florida
Posts: 12,322
Ron,
You are on the right track. Instead of just pulling and inspecting, consider replacing the plugs, wires, distributor cap and rotor. If I remember correctly the points are electronic, but if they are still mechanical, replace them too. Also, put the correct amount of fuel system cleaner in the fuel tank. Drive it 30 miles or so to get the chemicals moving through the system. Lastly, there is octane booster chemicals you can put in the fuel tank. Add the correct amount for the fuel in the tank. Try a reinspection. If she fails again, it is off the the carburator shop for you.

Carburators were about the only mechanical part
of an engine I did not get along with. While I understood what all the parts did, I was never able to aquire the skill to make all of them work together. For carb problems, I bought my way out of the problem.
__________________
Gary
2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
The Avatar Is Many Times Around The USA
Nobody Knows Your Coach Like Somebody Who Owns One Just Like Yours
GaryKD is offline   Reply With Quote
Old 03-25-2007, 08:01 PM   #5
Senior Member
 
Workhorse Chassis Owner
Join Date: Jan 2007
Location: Walnut Ca.
Posts: 105
I had a 84 chevy citation. Was had to pass smog. I used C R C pass or don't pay. Put my nic ox. way down. Hard to get but I passed twice with it. About $8.00 a bottle.Follow what it says on bottle.
__________________
Glen Taylor Jr. is offline   Reply With Quote
Old 03-26-2007, 04:36 AM   #6
Junior Member
 
Join Date: Mar 2007
Location: Northern Indiana
Posts: 8
When i got to work this morning I pulled out my emmission test books (we dodn't have emmission test in this area)to refamilliarize the reasons for failing. HC is unburned fuel going out the exhaust as the result of incomplete combuxtion. anything that causes a cylinder to misfire (abnormal combustion) will result in a high HC reading. It could be the result of being too rich or too lean fuel mixture, ignition problems or mechanical problems.
__________________
Jon & Bonnie
Abby, (her dog )
01 GMC Sierra, 01 Palomino Mustang Pop Up
GM Tech is offline   Reply With Quote
Old 03-26-2007, 08:24 AM   #7
Senior Member
 
Workhorse Chassis Owner
Join Date: Jun 2006
Location: Northwestern Montana
Posts: 3,138
Az_Ron, HC (Hydrocarbons) indicate unburned fuel mixture. CO (Carbon Monoxide) is indicator of burned fuel. Carburetor is OK indicated by passed CO readings. Look for a bad plug wire, or probably a worn or to wide of a gap in one or more plugs. If this is not the case, worse case, would be incomplete combustion due to low compression, burned valve etc. I have had a couple of 454's, and have some experience with them, all your indications are bad plugs. Hope so anyway

Dieselclacker
__________________
Dieselclacker
dieselclacker is offline   Reply With Quote
Old 03-26-2007, 01:46 PM   #8
Junior Member
 
Join Date: Mar 2007
Location: Tempe, AZ
Posts: 4
Thanks guys... here's an update...
I replaced the cap, rotor and plugs (Have nice 8.5mm wires with ceramic/porcelain boots!)
I used AC platinum plugs, gapped to the recommended .035.
Distributor is a GM HEI.
I believe I found and fixed a vacuum leak going to the choke vac diaphram on the left front of the carb. Took her back through, failed again.
All numbers but HC's at idle were virtually identical, but the HC's at idle dropped about 500 points, to 1076 from 1584.
Wondering if there is another vacuum leak?
A buddy of mine who I consider a wiz the this kind of stuff is going to stop by sometime this week and see if he can find something I'm missing.
Made a nice move in the right direction, but still a ways to go.
Thanks for all the suggestions guys!

Ron
__________________
1984 Rockwood 34' Class A

P30 Chassis
AZ_Ron is offline   Reply With Quote
Old 04-05-2007, 03:44 AM   #9
Senior Member
 
Max Hubrich's Avatar


 
Workhorse Chassis Owner
Join Date: Mar 2007
Location: Pikeville, NC
Posts: 1,724
Register your rig in Montana-- no vehicle inspection law. Its your second home then.

Max H
__________________
Max H,
2002 Newmar Mountain Aire, 37', 3778, W-22, 8.1 Vortac, Ultra Power upgrade, CAI (cold air intake), Taylor wires, colder plugs, Koni shocks.
Max Hubrich is offline   Reply With Quote
Old 04-10-2007, 05:19 AM   #10
Junior Member
 
Join Date: Apr 2007
Posts: 16
Timing.Did the right thing on the rest though.Put a timing light to it.
__________________


88 Minni,E-350
DirtyDogg is offline   Reply With Quote
Old 04-13-2007, 12:13 AM   #11
Junior Member
 
Join Date: Apr 2007
Posts: 6
Hopefully youve got it fixed by now. If not you need to consider your catalytic converter. If you have been running with high HC for very long there is a good chance the cat is shot.
Good luck
Lynn
__________________
Lynn and debbie is offline   Reply With Quote
Old 04-13-2007, 05:06 AM   #12
Senior Member
 
Join Date: Apr 2003
Location: Oakton, Va
Posts: 1,149
Did you fully warm up the engine before the inspection? I found that it necessary to do that on older vehicles and it makes a huge difference. I got where I would warm my old car up and even change the oil just to give it every chance and I passed. Without warming it up no way.
__________________
Jim Walker
N Virginia
2014 Palazzo 33.2
Cummins 6.7 ISB, Allison 2100 6 Speed
J Walker is offline   Reply With Quote
Old 04-13-2007, 04:55 PM   #13
Senior Member
 
Wallaby Dan's Avatar
 
Vintage RV Owners Club
Join Date: Jun 2006
Location: Texas
Posts: 2,212
J Walker is right. Warming up the engine real good will help as the converter has to get Hot in order to make it burn correctly. I have friends who run the coach over 50 miles and gets it up to highway speeds first then they go thru the emissions and pass, No matter how old the coach is.
Good luck and let us know how it goes,Capt.
__________________

__________________
1991 1500 Chevy Pickup
1994 5th wheel 30 foot trailer
I'm lost. I've gone to look for me. If I should return before I get back, please ask me to wait.
Wallaby Dan is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Fleetguad/Cummins 2007 Emission Compliant Engine Filtration info Joe-K Tiffin Motorhomes Owners Forum 1 12-14-2007 09:48 AM
U-joint failed on '06 Buddy and Beverly Alpine Coach Owner's Forum 6 09-01-2007 04:10 PM
New Low-Emission Cummins Engine Oregon Coyote Alpine Coach Owner's Forum 5 05-13-2007 04:19 PM
Calif. Emission Controls FloraBama Workhorse and Chevrolet Chassis Motorhome Forum 4 01-06-2005 05:22 AM
Failed Emission - '84 Class A MH-General Discussions & Problems 12 12-31-1969 07:00 PM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 05:16 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.