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guy johnson (Mcigeorge)
Registered Member
Username: Mcigeorge
Post Number: 33
Registered: 6-2005
Posted From: 65.54.97.186
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, August 18, 2007 - 12:18 am: | |
Well the kids and I want to name the bus Paradise.... but the busnut daddy hasn't agreed yet....whatdaya all think?
He wanted to name it the Foolish Carriage (anyone read Cheaper by the Dozen?). That is when our adventure began!
Hubby had bought some stuff on an auction and he decided to take a day off and we would have a bus trip!! Hurray! The kids (there were only 5 of them at the time, and one growing inside) LOVE traveling in their bus. When daddy starts it up, it is like puppys on lineolum... :D
We pack up the kids and hubby spent 45 minutes warming up our bus (it was winter and 10 F). THe kids and I were busy getting all the goodies in the bus. I even had baked some fresh granola bars for the trip. :P
We hop in the bus and take off. The kids were playing in the back with legos (gotta love a bus!!!) and I was snoozing in the front seats. We still have six of the original seats in and are steel tenting for now.
Hubby just pulled onto the interestate when the motor died! Hubby was able to steer it to the side. It would crank, but won't restart. Hubby went out to check on things and coolant was pouring out from the overflow collection tank (ok, hubby is translating this technical stuff-- I was still sitting in the bus trying to keep my cool and not cry!).
We have an MCI 9 NJT '83 and it is a sa-weet ride! The motor is a Detroit 6V92. My man has pulled the motor out, so it is easy to work on, but we can't find anyone to come and help us figure out what went wrong.... I, the wife, am getting desperate... It has been way too LOOOOOOOONNGG since I had a bus ride!! *whining* My birthday is coming up-- September 21-- and I would LOVE to have a bus trip for it..... so could you help me??
Alright, hubby said I gotta type the boring stuff... I am just typing for him now: "COolant came out of collection tank hanging under motor. Dipstick (not my hubby!:-P) shows no coolant in the oil. The engine does crank, but doesn't fire. I can tell that serious engine work will be needed, so I pulled it out to make it easy to work on. Now I just need a contact for a two stroke machanic."
Wifey here, thanks for any help... I am going thru bus withdrawl and it isn't fun!! We have a new baby and she hasn't gotten a ride in the bus...I will not stand by for this kind of abuse!!
Thanks!!
Ruth
Busin' Momma
Oh yea, we are in Southern Minnesota, bought our bus from ABC bus. |
guy johnson (Mcigeorge)
Registered Member
Username: Mcigeorge
Post Number: 34
Registered: 6-2005
Posted From: 65.54.97.189
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, August 18, 2007 - 10:19 am: | |
We thought we would clarify a few things.
We were traveling 65-70 miles an hour and all gages showed fine. And the motor just stopped. Once pulled over safely on the shoulder, I tried the starter and it cranked just fine--just won't start. So I got out, opened up the back doors, and was looking for anything obvious and water started running out-- there are two pipes, one on each side of the block... these two are connected by hoses to a tank hanging under the motor. These are not the burp tubes coming out of the valve covers. Also when I was getting ready to pull the motor, one radiator was completely drained and the other wasn't.
Really, we would like to have a guy that does Detriot Diseals on the side. We would like to get to know our own motor and we would like him to just come out and tell us if the motor is fried, or if it is a simple fix--we would pay him/her for this of course.. If it is major, we will save up and take it somewhere to get fixed. If it is minor, he could help us fix it. |
Mark R. Obtinario (Cowlitzcoach)
Registered Member
Username: Cowlitzcoach
Post Number: 149
Registered: 4-2001
Posted From: 204.245.228.230
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, August 18, 2007 - 11:52 am: | |
I know this is going to sound like a dumb question but but I need you to clarify what exactly happened when your engine quit running. Specifically, how did it stop running?
If it slowly quit running (not sudden stop), what was your fuel level at the time? If you are out of fuel or your fuel filters are totally clogged the engine would crank and crank and not fire.
If the engine sudden stops, since you indicate you have a 6V-92, you may have had some sort of meltdown in your DDEC. It could have been something as simple as a plug coming undone to a major brain fart in the DDEC.
I am not sure exactly why you have taken the motor out of the bus without some diagnostic work first.
In any case, a little more information would be helpful.
Good luck.
Mark O.
Castle Rock, WA |
guy johnson (Mcigeorge)
Registered Member
Username: Mcigeorge
Post Number: 35
Registered: 6-2005
Posted From: 65.54.97.150
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, August 19, 2007 - 11:27 pm: | |
It is a 6v92 mui, not DDEC. I would have gladly had someone come out and diagnosis it, but I figured water running out of a place it is not supposed to... was a sign of definate internal problems. Removing the motor is simply a way to make it easier to inspect. I can slide it in anytime to have it towed into a repair shop.
We had just filled the bus for the trip. The filters are new.
The engine fluttered out... I would have considered fuel, but coolant running out of the motor did not lead me to believe that it was a fuel related problem.
Guy |
Mark R. Obtinario (Cowlitzcoach)
Registered Member
Username: Cowlitzcoach
Post Number: 150
Registered: 4-2001
Posted From: 204.245.228.202
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, August 20, 2007 - 12:01 am: | |
In order for a diesel engine to run it needs three things-fuel, air, and compression. If the engine won't run it is lacking one or more of the three essentials.
Without even considering the overflowing coolant you need to determine which of the three essentials you no longer have.
If the engine is cranking over (visually inspect this by watching the belts going around as you crank the engine) you still should have compression.
Since you have an MUI engine the mouse trap may have tripped which would restrict the air from going into the engine.
With new filters you may have gotten a vapor lock and you may not be getting any fuel. Pull the filters to verify you have fuel in the filters. If no fuel you have a good place to start. If there is fuel in the filters check the return line out of the head to see if fuel is getting through the head.
Worst case, you may have had a catostrophic failure and the overflowing coolant is a result of exhaust going into the coolant.
Open the inspection panels to the air box to inspect the pistons. You should be able to determine if any of them have lost rings, broken pistons, etc.
Troubleshooting an MUI engine is pretty basic. Once the basics are covered you get into some of the problems the Odyssey has been having.
Good luck.
Mark O.
Castle Rock, WA |
Jim Wilke (Pd41044039)
Registered Member
Username: Pd41044039
Post Number: 171
Registered: 2-2001
Posted From: 69.77.156.44
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, August 20, 2007 - 1:46 pm: | |
MCI George:
I read your posts & noted you said "coolant was running out of the overflow tank mounted under the engine". If I understand you correctly, this would be the tank that collects "slobber" from the air box drains that would otherwise go all over the back of the bus & anything you tow. This tank is usually about 16" long and about 3-4" diameter with a breather filter on top like a K & N motorcycle air filter. Is this where the coolant was pouring out of?
If so, it points to coolant in the air intake, maybe a failed aftercooler or the like. Is it possible that the coolant was weak and possibly something froze in that 10 degree or colder weather? The aftercooler is between the blower and the air box (think intake manifold).
IF it is this type scenario, you DO NOT WANT TO CRANK the engine until you can be certain there is no coolant in one of the cylinders. Water (coolant) does not compress and you run the risk of breaking pistons, cracking a head or bending a connecting rod. If it were mine, I'd remove the injectors before cranking to be sure there's no liquid in the cylinders. Then I'd remove the blower & aftercooler & have it pressure tested. This is not difficult work like tearing the engine down, and may answer where that coolant came from.
If that's the source of the coolant, you probably still want a good DD guy. It would be a very good thing to check the compression in each cylinder to see if any are below minimum spec. If one or more are found, you will need to repair. It could be worn rings or valves BUT it could also be a bent rod so if you find any, have the guy measure the piston height to be sure. A bent rod will run for a while but will break at some future time so if it's there you want it out before it comes through the side of the engine. When he reinstalls the injectors, he will need to reset the rack and you might as well have him set the valve clearances while he is right in there.
No matter what is the problem, you absolutely must change the engine oil & filter even if you don't see coolant. If some did get in the pan past the rings, it WILL destroy your bearings if left in there. It lays UNDER the engine oil so you won't see small amounts on the dipstick. You also won't see grey oil (the old "milkshake in the oil pan") because you didn't run the engine long enough to emulsify the oil & coolant. (A VERY good thing!)
When you change the oil, carefully remove the oil from your drain pan, looking for any coolant in the bottom of the drain pan. If you find it, see if there is a clean out cover in the bottom of your oil pan. If so, remove the cover & clean the inside of the pan 'till you are certain there's no coolant.
Good luck. We're gonna keep our fingers crossed that it's something (relatively) cheap to fix! |
guy johnson (Mcigeorge)
Registered Member
Username: Mcigeorge
Post Number: 36
Registered: 6-2005
Posted From: 65.54.98.111
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, August 20, 2007 - 9:47 pm: | |
Thanks for the info. Jim, that is exactly where I am.... I just cannot seem to find a DD man to come out and look at my motor. I wouldn't know a bent rod from a pin cushion... I want to learn, just haven't found someone to guide me in the process. I believe it is a catastrophic failure, such as a broken head, or a gasket or something. But my total lack of experience really hinders my advancement... So anyone live in southern MN?? and know a DD guy that would help me? I keep asking around here too.
Thanks! |
Luvrbus (Luvrbus)
Registered Member
Username: Luvrbus
Post Number: 90
Registered: 8-2006
Posted From: 74.32.86.136
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, August 20, 2007 - 10:31 pm: | |
Guy, do have the repair manuals for the engine if not you need to get a set they have alot of info for trouble shooting.Also if there is a Army base near you some of those young men are great on the 2 strokes or if you have oil fields near most of the drilling people have good 2 stroke people.the other problem you will have if trying to do it yourself is all the DD tools you will have to buy and they are not cheap. good luck |
andy osorio (Andymech92)
Registered Member
Username: Andymech92
Post Number: 1
Registered: 8-2007
Posted From: 68.228.209.230
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, August 26, 2007 - 2:27 pm: | |
Hey guy,i run a shop out of phoenix,Most of the time when u have coolant coming out of the air box drains u have a possible cracked cylinder head from valve to valve and cooland leaks down to cylinder and out to air box,the other possible thing that would cause that is a snaped liner at the air holes and coolant going trought the 3 orange o rings.I will see if i can find a mechanic up there and hope to get u up on the road hope this would help. |
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