Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 03-15-2015, 11:52 AM   #1
Junior Member
 
Join Date: Mar 2015
Posts: 4
Winnebago Brave 454 Chevy

Just bought it. engine backfires. Put new gas high octane , replaced plugs, replaced cap and wires.
Drives ok. But every 5 miles, it backfires or hesitates, then runs great for abt 5 miles and then backfires again.
Any ideas?
__________________

__________________
Marie22 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 03-15-2015, 11:58 AM   #2
Senior Member
 
jplante4's Avatar
 
Monaco Owners Club
Nor'easters Club
Join Date: Sep 2013
Location: Cape Cod Mass
Posts: 316
Some thoughts...

Loose timing chain/worn timing gear
Dirty carb
Worn distributor shaft
Bad vacuum advance
Bad plug wires
Plugged PCV valve
Vacuum/intake leak
__________________

__________________
Jerry & Jeanne
1996 Safari Sahara 35' - White Tiger
Cape Cod
jplante4 is offline   Reply With Quote
Old 03-15-2015, 12:01 PM   #3
Senior Member
 
Cobra1's Avatar
 
Join Date: Jul 2012
Location: North Maryland
Posts: 464
Is backfire coming from exhaust or intake?
__________________
Getting there is half the fun - take your time and enjoy the scenery.
2012 Thor Outlaw
2000 Heritage Softail
Cobra1 is offline   Reply With Quote
Old 03-15-2015, 12:04 PM   #4
Junior Member
 
Join Date: Mar 2015
Posts: 4
P

Quote:
Originally Posted by Marie22 View Post
Just bought it. engine backfires. Put new gas high octane , replaced plugs, replaced cap and wires.
Drives ok. But every 5 miles, it backfires or hesitates, then runs great for abt 5 miles and then backfires again.
Any ideas?
It coming from intake
__________________
Marie22 is offline   Reply With Quote
Old 03-15-2015, 12:06 PM   #5
Junior Member
 
Join Date: Mar 2015
Posts: 4
Brave motorhome 454 chev

It is coming from intake
__________________
Marie22 is offline   Reply With Quote
Old 03-15-2015, 12:08 PM   #6
Junior Member
 
Join Date: Mar 2015
Posts: 4
Thank you
__________________
Marie22 is offline   Reply With Quote
Old 03-15-2015, 06:32 PM   #7
Senior Member
 
PCarillon's Avatar
 
Join Date: Jul 2014
Posts: 263
What year Brave? if back fire is from intake it is more than likely timing related so check engine timing. Make sure you have the plug wires on right also could have a pair crossed 18436572
__________________
Paul & Kim Carillon
2016 Outlaw 38RE
PCarillon is offline   Reply With Quote
Old 03-15-2015, 06:40 PM   #8
Senior Member
 
Ford Super Duty Owner
Join Date: Dec 2009
Location: Mcdonough, Ga.
Posts: 4,382
It could be this engine was timed from #1 cyl. Rather than #5 cylinder.
__________________
1998 Pace Arrow 35 ft. F53 Ford V10 2012 Honda Civic toad
32 years mechanic at Delta Air Lines 15 year motorhome service manager. 3 popups....2 travel trailers....5 motorhomes....loved them all.
ga traveler is offline   Reply With Quote
Old 03-16-2015, 06:19 AM   #9
Senior Member
 
PCarillon's Avatar
 
Join Date: Jul 2014
Posts: 263
All Chevy engines time from cylinder 1 that I know of
__________________
Paul & Kim Carillon
2016 Outlaw 38RE
PCarillon is offline   Reply With Quote
Old 03-16-2015, 06:23 AM   #10
Senior Member
 
Join Date: Sep 2007
Location: texas
Posts: 2,267
It is timed from number 5 look under the motor drivers side you will see the timing mark
__________________
whem2fish is offline   Reply With Quote
Old 03-16-2015, 06:46 AM   #11
Senior Member
 
mike brez's Avatar
 
Join Date: May 2005
Location: Milford,CT.
Posts: 1,357
I thought if timed from bottom timing pointer you use #5 from the top #1
Could make sure firing order is correct.

__________________
1998 36ft Country Coach Magna #5499
Gillig chassis with a Detroit series 40
2002 F250 CC 7.3 PSD
mike brez is offline   Reply With Quote
Old 03-16-2015, 08:00 AM   #12
Senior Member
 
jplante4's Avatar
 
Monaco Owners Club
Nor'easters Club
Join Date: Sep 2013
Location: Cape Cod Mass
Posts: 316
I don't think there's enough distributor swing to time it to #1 if the bottom timing marks use #5, but I suppose anything is possible. Has this actually happened to anyone?
__________________
Jerry & Jeanne
1996 Safari Sahara 35' - White Tiger
Cape Cod
jplante4 is offline   Reply With Quote
Old 03-16-2015, 08:11 AM   #13
Senior Member
 
tomwalt's Avatar
 
Tiffin Owners Club
Workhorse Chassis Owner
Join Date: Dec 2010
Location: Northern Virginia
Posts: 1,318
The product 'sta bil' fuel stabilizer that is added to the gas tank. I've had very good results with this product cleaning a carb that was acting similar to yours. Cleans fuel injectors too.
Available at WalMart or any parts store, a cheap thing to try and won't hurt anything to try it.
Also, there is a 'Workhorse' forum on IRV2 that is full of Chevy 454 experts. You'll get more Chevy specific answers posting there. Here's a link to it:
http://www.irv2.com/forums/f22/
__________________
Tom and Amy from Northern Virginia.
2000 Allegro 454/Workhorse P32/TST/Crossfire
Life is a DIY project - enjoy it.
tomwalt is offline   Reply With Quote
Old 03-16-2015, 09:18 AM   #14
Senior Member
 
Join Date: Sep 2007
Location: texas
Posts: 2,267
Using 5 from the bottom works but you need 2 people one on distrubter one on timing I would look at the wires on the cap pull one at a time look for any green powder a sign of miss fire
__________________

__________________
whem2fish is offline   Reply With Quote
Reply

Tags
winnebago, chevy, brave, 454



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
Brave/Tribute Named 'RV of the Year' by RVBusiness DriVer RV Industry Press 0 12-25-2014 10:23 AM
After going to the show we're interested in a Winnebago Brave The Randall Winnebago Industries Owner's Forum 8 11-12-2014 11:44 AM
Help Need 83 Winnebago Brave owners Manual Miller93 Winnebago Industries Owner's Forum 8 08-29-2014 07:11 AM
Winnebago Retro Brave and Tribute Profleetone Class A Motorhome Discussions 2 05-04-2014 07:48 PM
Winnebago Brave Front End Alignment ChipN Winnebago Industries Owner's Forum 24 10-20-2013 04:48 PM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 05:21 AM.


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