RV Trip Planning Discussions

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Revcon Owner's Forum
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 10-03-2019, 10:45 PM   #1
Junior Member
 
Join Date: Mar 2019
Posts: 24
EVAP and fuel system help needed

Hey everyone. I am getting a large “whooshing” sound every time I open my gas cap. 1971 Olds 455 powered Revcon 250.

Unfortunately, I lost the original gas cap. Replaced it with one from NAPA. Should I have a vented or non vented cap?

Also, I’ve been going ahead and opening the gas cap when I stop on the road. If I don’t, the gas tank sounds like it is under pressure to implode.

Could my charcoal cannister need replacing? Any other EVAP type items to check for!

Can someone give me a brief education on what I should have in a 1971 Revcon as far as emission and fuel items to look for?

Just want to be safe in the road!
__________________

Jpownell is online now   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 10-11-2019, 11:23 PM   #2
Senior Member
 
BJohnsonsv's Avatar
 
Vintage RV Owners Club
Join Date: Jun 2017
Location: San Jose, CA
Posts: 221
Quote:
Originally Posted by Jpownell View Post
Hey everyone. I am getting a large “whooshing” sound every time I open my gas cap. 1971 Olds 455 powered Revcon 250.

Unfortunately, I lost the original gas cap. Replaced it with one from NAPA. Should I have a vented or non vented cap?

Also, I’ve been going ahead and opening the gas cap when I stop on the road. If I don’t, the gas tank sounds like it is under pressure to implode.

Could my charcoal cannister need replacing? Any other EVAP type items to check for!

Can someone give me a brief education on what I should have in a 1971 Revcon as far as emission and fuel items to look for?

Just want to be safe in the road!

I really don't think there's much of an evap system in the early "70 versions on these RV's. A vented gas cap at best. I found no evidence of a charcoal canister and I took out the tank, and had it boiled as well as replaced all fuel lines. That said, I have experienced pressurizing of the tank on long trips, but no vapor lock (yet -- )

I may look at a retrofit evap system of some sort. Most likely I'll get the vented cap right.
__________________

__________________
~~~~~~~~~~~~~~
1972 RevCon 250 D/T
View my progress on Flickr https://flic.kr/s/aHskU8RN6W
BJohnsonsv is offline   Reply With Quote
Old 10-12-2019, 09:45 PM   #3
Junior Member
 
Join Date: Mar 2019
Posts: 24
Hey Brad. Thanks for the reply. So I drilled a tiny hole into my previously unvented gas cap is such that it will now vent. That took care of the large pressure, with only a little suction pressure after a nice ride today.

I could not find a charcoal canister in mine either. I have never dropped the gas tank so thanks for the information on what to expect.

On my ride today, everything was running so smoothly it was amazing! I am getting down to just details now to really have a road worthy Revcon!

I appreciate the response!

Jeff
Jpownell is online now   Reply With Quote
Reply

Tags
fuel



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
Onan QC5500 Evap HGJAB MELLO MOON RV Systems & Appliances 8 04-17-2019 07:30 PM
EVAP Evaporative Emissions Canister leesdx1 Workhorse and Chevrolet Chassis Motorhome Forum 1 05-31-2017 02:46 PM
1984 Ford Tioga Class C - Emissions Evap System Help johnjrod Vintage RV's 4 07-12-2016 11:35 AM
Evap emission purge valve cardiffman Workhorse and Chevrolet Chassis Motorhome Forum 15 08-05-2015 10:14 AM
'95 Vectra 34RA - Evap. Can location JamesT Winnebago Industries Owner's Forum 9 04-07-2013 09:14 PM

» Featured Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 11:10 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
×