Started my bus this morning after being gone for three weeks and now she won't shut down, no air pressure and a massive oil leak
What is the bus?
I am guessing that there is an air powered shut down lever. The air system is probably frozen, and you will have to use a prybar to operate that valve manually.
Oil leak is probably from the oil cooler, on the side of your engine. Random guess, but also guessing it so cold where you are.
sorry, 1986 MCI 102a3, located in ks.
Where would the shut down lever be?? It's a 6v92
Yup, so it is cold today. Your air dryer probably froze, and it is not supplying air to your fuel shutoff. That is bad, because you could run it out of oil, and blow your engine up.
Look for the shutdown lever. I will look around for pics for you. You will have to use a prybar to shut it down.
Keep oil in that baby! Don't let it run dry because a low oil pressure fault will not shut it down!
I am not for sure, but I am thinking you could put a board over the air intake, and starve the engine off, with no adverse affects. Looking for a pic of the shutdown lever for you. q
Here is what one looks like on an 8V71. Might be similar to yours. http://mcibustalk.com/bbs/index.php?topic=298.0 (http://mcibustalk.com/bbs/index.php?topic=298.0)
If it is a mechanical engine, the shut down lever is on top of the governor, right beside the throttle lever, and you just give it a quarter turn. There should also be a fuel tap located on the passenger side of the engine just above the fuel filters. Or unscrew one of the fuel filters so it loses prime. I'm probably late to this party...
Brian
Yup. Unscrewing the fuel filter would do it too.
I am north of KC on the KS side. Weren't you down towards Emporia?
Thanks everybody for the help!! Got her shut down. Now I know what that valve is!!
Jim
John, your close...east of Wichita
Where is your oil leak coming from?
Not sure yet, but it appears to be coming from somewhere on the passenger side rear
Somewhere under this mess(https://busconversionmagazine.com/forum/proxy.php?request=http%3A%2F%2Ftapatalk.imageshack.com%2Fv2%2F14%2F12%2F01%2Fa57e2ba15355437e678c895afb58ad61.jpg&hash=0871263f7a92badbe1ffa0fc202b2a693ea4434a)
Probably coming from the blower drive supply oil line the little 1/4 inch tube on the back of the blower and running to the front,the turbo supply line or the blower coupling only places it could be coming from on top
I'll tell you what, I discovered the engine stop lever when I started the bus while I was in the middle of fixing some stuff, and I had a fitting left off in the aux air system. Engine starts, pressure starts to build, all of a sudden a massive loud whistling scream from somewhere in the engine compartment. No pressure to make the engine stop switch work, I'd seen the engine stop lever being moved so I tried it and hey presto, the engine stopped running. Scared the poo out of me :o
It's possible the "oil leak" is unburnt fuel leaking out of the exhaust pipes, if nothing else raises it's head. Other than valve cover gasket I'm not coming up with something that would cause a massive oil leak in that area of the engine.
Edit; agree on the leak possibly being elsewhere and running down to the front of the engine.
BTW, Clifford, that is an excellent picture of the thermostat housing that I need for the intercooler hookup, I never saw one before so now I know what it looks like!
Brian
I'm hoping it's just something simple. Now all I need is for it to warm up a bit and I'll start digging into it. For now I think I'll keep working on the insides and get some manuals ordered for it so that I know what I'm messing with.
Once again, many, many thanks for those that got me pointed in the right direction to getting her shut down!!
And I did add oil to keep her from running low while she was running!!
Just out of curiosity, how's your heart rate and blood pressure?
LOL....coming back to normal
The housing is already in box for you Brian so is the tube just waiting on the 3 pin tool or my money back ;D