Bus Conversion Magazine Bulletin Board
April 24, 2017, 06:02:00 PM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News: This BB is intended for the sole purpose of sharing conversion and bus related information among visitors to our web site. These rules must be followed in order for us to continue this free exchange of info. No bad mouthing of any business or individual is permitted. Absolutely no items for sale are to be posted, except in the Spare Tire board. Interested in placing a classified or web ad, please contact our advertising dept. at (657) 221-0432 or e-mail to: info@busconversions.com.

   Home   Help Forum Rules Search Calendar Login Register BCM Home Page Contact BCM  
Pages: [1]   Go Down
Author Topic: 4104 emergency 'shut off' solonoid question...  (Read 1408 times)
Jr. Member
Offline Offline

Posts: 62

« on: September 04, 2006, 05:19:50 PM »


The seller of a 4104 that I am considering has emailed me the following :

The emergency shut off solenoid is bad, which means that the air vent in the
turbo was shut and the normal amount of air wasn't getting to the engine
(blows black smoke), but I ordered a new one today and I opened the valve
and everything is back to normal and running fine.† It can run without the
solenoid without any problems, its just that it won't shut the valve if you
hit the switch† from inside if its not working.† It just took me awhile to
figure it out.

Does that sound right? or am I missing something? I thought the solonoid would shut down the engine altogether, not allow it to run rich and black smoke.

Any advice?† Undecided

thanks alot!

Barn Owl
Roanoke, VA
Hero Member
Offline Offline

Posts: 2080

PD4106-1063 "Wheezy Bus"

« Reply #1 on: September 04, 2006, 08:22:10 PM »

If something was wrong with it, could it possibly have not been closed all of the way? (If thatís possible, Iím not an expert) That might explain the symptoms. Otherwise from what I have read and heard others say, the motor will not run if the air passage is blocked.

L. Christley - W3EYE Amateur Extra
Blue Ridge Mountains, S.W. Virginia
Itís the education gained, and the ability to apply, and share, what we learn.
Have fun, be great, that way you have Great Fun!
Hero Member
Offline Offline

Posts: 3620

« Reply #2 on: September 04, 2006, 08:50:44 PM »

I guess it is possible for the shut-off to get stuck part way open but that is not supposed to happen. Sometimes they get very stiff from disuse and the solenoid wont clear the cam notch and also sometimes the shut-off valve won't work when the solenoid is tripped. The solenoid only releases the cam, the spring closes the shut-off valve.

When it is properly closed it will not run.

The 6-71 does not have a turbo unless it has been modified. He probably means the blower.

Ash Flat, AR
Hero Member
Offline Offline

Posts: 3956

'75 MC8 8V71 HT740

« Reply #3 on: September 05, 2006, 04:57:57 PM »

Reply over on BNO to this.

happy coaching!

Frozen North, Greater Toronto Area
Pages: [1]   Go Up
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!