Reply
 
Thread Tools Display Modes
 
Old 10-27-2016, 02:32 PM   #1
Mini-Skoolie
 
Join Date: Oct 2016
Posts: 24
6BTA dies randomly while coming to a stop

'92 Blue Bird. I only have access to one side of the tank, as I don't have the key for the other side. Planned on drilling out the lock, haven't had a chance.

It's happened 3 times. I drive it 20-30 mins and it warms up, then I come up to a stop sign or light and it dies. 2 out of the 3 times its started right back up, 3rd time I had to use starting fluid.

How do the dual tanks work in these busses? I don't see a switch,m. My gauge reads half and I put some diesel in the driver side tank before it happened to me today.
Onetype is offline   Reply With Quote
Old 10-27-2016, 03:10 PM   #2
Bus Nut
 
AlleyCat67's Avatar
 
Join Date: Oct 2013
Location: Music City USA
Posts: 737
Year: 2005
Coachwork: Thomas
Chassis: Freightliner
Engine: Detroit MBE906
Rated Cap: 72
I would think that they would work like big rigs with dual tanks..... they have a line connecting them so if you only put fuel in one side it will eventually balance out between them.... and also the fuel draws from one tank and the return line goes to the other. But that's not a foregone conclusion, BB may have done it differently.
__________________
My bus - Jasmine - External Build Website - YouTube Channel - TN/KY Meetup Group
As a level 1 burglar, Bilbo got a pony when he accompanied the level 60 dwarves on the Smaug the Dragon raid. Those powerlevelers probably invited him solely so he could trigger fellowship attacks for them.
AlleyCat67 is offline   Reply With Quote
Old 10-27-2016, 03:12 PM   #3
Mini-Skoolie
 
Join Date: Oct 2016
Posts: 24
Yeah just trying to narrow down to tank issue or fuel filter/pump related. It sat 8 Months prior to me buying it.
Onetype is offline   Reply With Quote
Old 10-27-2016, 03:22 PM   #4
Bus Nut
 
AlleyCat67's Avatar
 
Join Date: Oct 2013
Location: Music City USA
Posts: 737
Year: 2005
Coachwork: Thomas
Chassis: Freightliner
Engine: Detroit MBE906
Rated Cap: 72
A couple of quick and easy (and fairly cheap) things you can try....

Pull and drain the water separator.

Replace the fuel filters.

If it's an issue with fuel supply one or both of those may help. If not then you'll need to dig a little deeper.

I tend to think the fuel itself is probably ok, I'm presuming it was running all right prior to just shutting down?
__________________
My bus - Jasmine - External Build Website - YouTube Channel - TN/KY Meetup Group
As a level 1 burglar, Bilbo got a pony when he accompanied the level 60 dwarves on the Smaug the Dragon raid. Those powerlevelers probably invited him solely so he could trigger fellowship attacks for them.
AlleyCat67 is offline   Reply With Quote
Old 10-27-2016, 07:42 PM   #5
Mini-Skoolie
 
Join Date: Oct 2016
Posts: 24
Yeah, it will start and run all day long, including idle. Just dies randomly when coming to a stop, most notably not on flat ground, but it has happened on flat ground once. Where's the water separator on these busses?
Onetype is offline   Reply With Quote
Old 10-27-2016, 08:16 PM   #6
Bus Nut
 
AlleyCat67's Avatar
 
Join Date: Oct 2013
Location: Music City USA
Posts: 737
Year: 2005
Coachwork: Thomas
Chassis: Freightliner
Engine: Detroit MBE906
Rated Cap: 72
It should be somewhere near the fuel filters... there are plenty of YouTube videos out there showing how to do this.
__________________
My bus - Jasmine - External Build Website - YouTube Channel - TN/KY Meetup Group
As a level 1 burglar, Bilbo got a pony when he accompanied the level 60 dwarves on the Smaug the Dragon raid. Those powerlevelers probably invited him solely so he could trigger fellowship attacks for them.
AlleyCat67 is offline   Reply With Quote
Old 10-28-2016, 01:32 PM   #7
Bus Nut
 
Join Date: Jul 2014
Posts: 716
Year: 1998
Coachwork: Bluebird
Chassis: TC2000 RE
Engine: 8.3l Cummins
Rated Cap: 78
Have you checked the fuel pick up(s) in the tanks?
Quote:
Originally Posted by Onetype View Post
Yeah, it will start and run all day long, including idle. Just dies randomly when coming to a stop, most notably not on flat ground, but it has happened on flat ground once. Where's the water separator on these busses?
aaronsb is offline   Reply With Quote
Old 10-28-2016, 01:55 PM   #8
Mini-Skoolie
 
Join Date: Oct 2016
Posts: 24
I haven't. Going to check water traps and fuel filters first. Very familar with these motors in truck form, just not in a bus lol
Onetype is offline   Reply With Quote
Old 10-28-2016, 11:27 PM   #9
Bus Geek
 
Tango's Avatar
 
Join Date: Mar 2011
Location: Houston, Texas
Posts: 8,462
Year: 1946
Coachwork: Chevrolet/Wayne
Chassis: 1- 1/2 ton
Engine: Cummins 4BT
Rated Cap: 15
A lot of tanks have a filter inside. Not sure about yours but worth checking since it sounds like a fuel flow issue.
Tango is offline   Reply With Quote
Old 10-29-2016, 10:13 AM   #10
Bus Nut
 
Rameses's Avatar
 
Join Date: Sep 2016
Location: Chapel Hill, NC
Posts: 855
Year: 2002
Coachwork: Blue Bird
Chassis: All American
Engine: Cummins 8.3/Allison MD3060
Rated Cap: 84
Quote:
Originally Posted by AlleyCat67 View Post
I would think that they would work like big rigs with dual tanks..... they have a line connecting them so if you only put fuel in one side it will eventually balance out between them.... and also the fuel draws from one tank and the return line goes to the other. But that's not a foregone conclusion, BB may have done it differently.

That's only true of older trucks.

The government (in their infinite wisdom) at some point decided that crossover tubes presented an unacceptable risk of dumping all of your fuel on the road should it get broken.

They banned crossover tubes, and on trucks made since then you see all kinds of crazy BS involving float triggered switches for tank-to-tank transfer pumps, and return line pressure monitors to decide which tank to return fuel to, and a number of other things that engineers dreamed up to make a two tank design work without a crossover.

That's not to say the old crossover tube system was perfect either. I have a Mack Superliner that a previous owner put an aftermarket fuel pump/dryer system on while doing some hot-rodding work. That thing moves a tremendous amount of fuel. Enough that with a slight blockage in the crossover, after running for about 45 minutes the right tank was completely empty and the left tank had plenty of fuel in it. In the amount of time it took to drain some fuel to fill the fuel filters, the fuel level had evened back out. Just had to stop every 20-30 minutes and shut the engine down for a couple minutes, let some fuel move from the return tank to the supply tank, fire it back up and head on down the road. Got it back home, cleaned the tanks, put a bigger crossover on it, and haven't had a problem since.
Rameses is offline   Reply With Quote
Reply

Thread Tools
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


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 12:09 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.