Wanderlodge Owners Group  

Go Back   Wanderlodge Owners Group > Mechanic's Corner > Engine

Engine Discussion of preventative/corrective maintenance and other technical issues regarding your coach's engine.

Site Search:
Reply
 
Thread Tools
  #1  
Old 07-17-2011
1derer 1derer is offline
Senior Member
 
Join Date: Jan 2009
Location: tucson
Posts: 312
Default cummins 8.3 turbo - won't shut off

I knew cummins like to run, but what do you do when it keeps going after you remove the key? (Hopefully it just needs a new ignition switch.)

In LA (Hawthorn) at the moment, who would you suggest?

I can tell you what doesn't work, and this is a tale in itself. (And just suppose instead of carrying a pail of tools around you're a sweet young thing that's never turned a wrench, but it's midnight Saturday anyway and the motor won't stop):

1) a competent/equipped truck stop won't stop it (Don't do RVs, nor BlueBird buses)
2) disconnecting the battery doesn't stop it
3) cutting the alternator wire doesn't stop it
4) shifting into gear with the brake on to stall it doesn't stop it
5) the fire department will come when informed there's plenty of fuel on board, but they won't enter the vehicle (liability) and aren't mechanics anyway so can't make suggestions
6) Allstate Motor Club doesn't cover repairs, just tows. And towing companies state they won't turn it off to tow it. (So even paying them for a tow to nowhere won't stop it.)
7) a guard at a nearby commercial facility won't call 911

Why doesn't the 78 owners manual say where the 12 v fuses are, assuming this 75 buggy has fuses? Though I don't know if removing any would stop it.

Here's what stopped it:
Kissing off about 40 gallons of diesel by unscrewing the drain in the fuel filter. (Maybe EPA could weigh in on getting any of the above agencies to do what the shingles they hang out claim they're there for?)
__________________
1derer
'75 FC Cummins 8.3
Tucson, AZ
Reply With Quote
  #2  
Old 07-17-2011
rwoody's Avatar
rwoody rwoody is offline
ANOTHER REDNECK
 
Join Date: Dec 2007
Location: el paso tx now
Posts: 3,633
Default

on the left side of the engine is a shut off lever that is hooked to a round cyl--the wires on it is what makes it shut off the fuel--in front of that is the throttle linkage.

easy to pull it back and kill it==i ran cables for a while on my converted pickups they work every time@
__________________
rWoody
94 WL Hauling Wood
Proudly Serving Active Duty Reserve Army
hEllPASO-TX = duty station



Reply With Quote
  #3  
Old 07-17-2011
bloomas's Avatar
bloomas bloomas is offline
Senior Member
 
Join Date: Jan 2008
Location: Harahan La.
Posts: 258
Default Fuel shut down valve

Do you have a fuel shut don valve? Disconnect the fuel line from the filter.
Hope it not sucking the oil out the oil pan.
__________________
Bob Loomas 1985 PT 36
US Navy Retired
Harahan La.
Reply With Quote
  #4  
Old 07-17-2011
1derer 1derer is offline
Senior Member
 
Join Date: Jan 2009
Location: tucson
Posts: 312
Default

Hey Woody -
Am wishing I'd gone online at 3am Pacific time last night, but would you have been up? And it was noisy in here, and fumey and hot to boot.

Speaking as somebody who's now short 40+ gall fuel and other sundry things to recoup , you have my attention:
Should I look at this down from the doghouse, or up from the ground?
From the doghouse aerial view, looking down from the aft end of the doghouse and facing foreward, I see the long horizontal throttle spring. The fore end of the throttle spring can be pulled forward by a lever that moves forward when the accelerator pedal is depressed. About 6" fore of that lever is another lever that can be pulled aft till it hits a horizontal bolt. A sidecar of this lever keeps the lever from going fore because it hits an approx 1" diameter slightly tilted off horizontal cylinder that has about a 3/8" diamter rod sticking out the aft end of it about half an inch. I don't see any easily visible wires, electrical or otherwise, attached to any of these items. (If I were a mechanic, I could probably give names/functions to the bits of hardware I've described, but unfortunately I can only use a thousand words to describe each picture.)
__________________
1derer
'75 FC Cummins 8.3
Tucson, AZ
Reply With Quote
  #5  
Old 07-17-2011
1derer 1derer is offline
Senior Member
 
Join Date: Jan 2009
Location: tucson
Posts: 312
Default

Hey Bob -
Looking down from the top of the doghouse I see the main fuel filter I unscrewed the bottom of last nite while under the bus. (How much more pleasant this is than looking up at it from the ground in the dark with the motor running overhead.) Since Woody's into cummins 8.3, maybe he can speak to whether there's a fuel shut off in the picture: It appears there's about a half inch diamter red plastic fuel line that goes into the left end of a metal cylinder whose housing is bolted to the left side of the engine. This cylinder is the bottom one of a pair that are stacked side by side one on top of the other, perpendicular to the side of the bus, tilting off horizontal so that the left ends of the cylinders are higher than the right (bolted on) ends of the cylinders. Out the top of the cylinder housing is a line that feeds into the engine. I don't believe I see any valves anywhere along these feeds. I was looking around near the fuel tank last night in the dark but wasn't patient enough to determine if one of the two hoses/wires? I saw near it was fuel or something else. If I had, I might very well have just cut it there.
__________________
1derer
'75 FC Cummins 8.3
Tucson, AZ
Reply With Quote
  #6  
Old 07-17-2011
Randy Dupree's Avatar
Randy Dupree Randy Dupree is offline
Forum owner
 
Join Date: Dec 2007
Location: Archer,Fl
Posts: 18,497
Default

there is a fuel shut off,they are famous for failing,you can do it by hand,its on the injector pump,see he solenoid,follow the linkage and pull/push it to shut it down.
__________________
Randy Dupree
2000 LXI 43
Bainbridge,Ga.
Archer Fl.
www.buybyebluebird.com

randy@randydupree.com
Reply With Quote
  #7  
Old 07-17-2011
bwinter1946's Avatar
bwinter1946 bwinter1946 is offline
Senior Member
 
Join Date: Mar 2009
Location: Madera
Posts: 2,689
Default

Should look something like this:



__________________
Brad Winter
Madera, California
1997, 37' BMC
1999, Jeep Cherokee, Toad
1970, VW Baja Bug, Alternate Toad
Reply With Quote
  #8  
Old 07-18-2011
iamflagman's Avatar
iamflagman iamflagman is offline
Forum Moderator
 
Join Date: Dec 2007
Location: Hopkins
Posts: 9,135
Default

OK folks lets get a camera and take a picture of the fuel shutoff solenoids on your engines and we will start a thread on how to shut down an engine when something like this happens, but we need actual clear pictures for this post.
__________________

JOHN FINN
FORUM MODERATOR-ADMINISTRATOR
1982 FC35RB
I'm NO EXPERT, but I did stay in the FINN'S INN EXPRESS last night
HOPKINS, SOUTH CAROLINA
VISIT THE FINN'S INN EXPRESS REMODELING ADVENTURE AND TECH. TIPS
I'M SO SLOW ON THE HILLS,THAT I GET TO SMELL THE FLOWERS AS I GO BY.....AND WATCH THEM GROW TOO!!
Visit the WILD HARE RACING website
REMEMBER 9/11
Reply With Quote
  #9  
Old 07-18-2011
Randy Dupree's Avatar
Randy Dupree Randy Dupree is offline
Forum owner
 
Join Date: Dec 2007
Location: Archer,Fl
Posts: 18,497
Default

Quote:
Originally Posted by iamflagman View Post
OK folks lets get a camera and take a picture of the fuel shutoff solenoids on your engines and we will start a thread on how to shut down an engine when something like this happens, but we need actual clear pictures for this post.
Good idea woody.
Lets start a new thread.
__________________
Randy Dupree
2000 LXI 43
Bainbridge,Ga.
Archer Fl.
www.buybyebluebird.com

randy@randydupree.com
Reply With Quote
  #10  
Old 07-18-2011
iamflagman's Avatar
iamflagman iamflagman is offline
Forum Moderator
 
Join Date: Dec 2007
Location: Hopkins
Posts: 9,135
Default

Quote:
Originally Posted by Randy Dupree View Post
there is a fuel shut off,they are famous for failing,you can do it by hand,its on the injector pump,see he solenoid,follow the linkage and pull/push it to shut it down.

Here is a picture of the Cummins fuel shutoff solenoid from a previous post;

Attached Thumbnails
Click image for larger version

Name:	BMC CUMMINS FUEL SHUTOFF SOLENOIDsm.jpg
Views:	4597
Size:	268.0 KB
ID:	11372  
__________________

JOHN FINN
FORUM MODERATOR-ADMINISTRATOR
1982 FC35RB
I'm NO EXPERT, but I did stay in the FINN'S INN EXPRESS last night
HOPKINS, SOUTH CAROLINA
VISIT THE FINN'S INN EXPRESS REMODELING ADVENTURE AND TECH. TIPS
I'M SO SLOW ON THE HILLS,THAT I GET TO SMELL THE FLOWERS AS I GO BY.....AND WATCH THEM GROW TOO!!
Visit the WILD HARE RACING website
REMEMBER 9/11
Reply With Quote
Reply

Bookmarks

Tags
"la service", "service in la", "won't shut down", "won't shut off"

Thread Tools

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
MN Gov. Shut Down Hoagie Under The Awning 1 06-30-2011 10:09 PM
Help Can not shut off my engine!!!! FatGuySlim Engine 12 06-27-2011 09:15 PM
Shut down not working GARY,M Generators 7 07-25-2010 08:41 AM
Saftey Shut Down Don't Work Jim Harvie Generators 3 08-01-2009 09:58 AM
Generator doesn't want to shut off clyndes Generators 3 06-04-2009 07:05 PM

Web Search:

All times are GMT -4. The time now is 12:21 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.