Runaway multifuel 6/20/14

[roscoe]

Perhaps practicing an emergency shutdown would help some gain comfort from this concern.

Adding an air butterfly shutoff would be a nice modification, if your worried about run aways. (mandatory in some sanctioned events for diesel powered trucks and tractors).

Having experienced this runaway up close and personal, it's not something I want to do again. A quick shutoff like the butterfly valve would be well worth it just for piece of mind, even if it never occurs again. There would be no way I could have got that mushroom off quick enough to do any good had I not done so as a precaution.

 

[roscoe]

Well, just doing a visual inspection of the engine all around, I see no holes, no dents in the valve cover and everything looks "normal" for the deuce. Would it be likely that the head gasket blew and spilled out oil. Like I said earlier, I know some fuel got into the oil because the crankcase has too much in it. What would be the next best step to take. Should I see if it will turn over?

 

[RAYZER]

Well, just doing a visual inspection of the engine all around, I see no holes, no dents in the valve cover and everything looks "normal" for the deuce. Would it be likely that the head gasket blew and spilled out oil. Like I said earlier, I know some fuel got into the oil because the crankcase has too much in it. What would be the next best step to take. Should I see if it will turn over?

A compression test would tell alot.

 

[Triple C]

Make sure that isn't coolant in the oil. If mixed well it's hard to tell. Check out your coolant system before you try and start the truck. I'm with RAYZER, do a compression check.

 

[boogy886]

I think that is a good idea you have there Reaper, using a CO2 extinguisher with an emergency kill switch. That could be a Life (engine) saver !

I've been thinking about doing this for a while, 5 lbs should do it. You can get a 5 lb CO2 tank used for beer kegs (I've got a couple laying around) off of Amazon for ~$69. This could be plumbed into the fording kit port, if you do not have a fording kit, right? Then you're a quick valve-turn away from an emergency shutdown.

Hope your engine isn't toast! But, as others have said, things could have been worse! Glad you're okay!

 

[cbear]

While trying to get an old extinguisher recharged, I learned it can be hard to find anyone willing to do it, unless you have a business. Also, your cylinder will need to be within inspection dates. Just an FYI.

 

[boogy886]

While trying to get an old extinguisher recharged, I learned it can be hard to find anyone willing to do it, unless you have a business. Also, your cylinder will need to be within inspection dates. Just an FYI.

Another advantage to my technique, some of the larger Liquor Stores with a "brew your own" department can fill these tanks for you. And, because I live in small town that doesn't have one of these stores, I actually get the guys at the local paintball arena to fill my CO2 tanks. But, your cylinder will still have dates on it.

 

[swbradley1]

You might be able to get tanks filled through your local fire department.

Most pressure (if not all) require visual and hydrostatic testing at certain intervals. SCUBA tanks are 1yr on vis and 5 yr on hydro.

 

[welldigger]

Every welding supply shop sells bottled co2. It's the most commonly used shielding gas.

 

[John S-B]

You might be able to get tanks filled through your local fire department.

Most pressure (if not all) require visual and hydrostatic testing at certain intervals. SCUBA tanks are 1yr on vis and 5 yr on hydro.

Most fire depts. DO NOT refill extinguishers. Look in the yellow pages or the internet for companies that do fill them.

 

[Jeepsinker]

Anyone that need extinguishers filled can do so through me. I have an extinguisher service a couple of miles from me owned by a friend and he has very reasonable rates.

 

[Squirt-Truck]

I understand the concept of using CO2, but, has anyone considered the number of cubic feet of gas needed to completely displace the O2 being pulled into the engine and that this flow will have to continue until the rotating mass comes to a full stop or they will just re-start?

Just a thought......

 

[ke5eua]

I understand the concept of using CO2, but, has anyone considered the number of cubic feet of gas needed to completely displace the O2 being pulled into the engine and that this flow will have to continue until the rotating mass comes to a full stop or they will just re-start?

Just a thought......

Halon, put a bottle in the cab and run the lines to the intake right at the engine.

Will be more expensive but halon would be the ideal solution in this.

 

[acesneights1]

Well, just doing a visual inspection of the engine all around, I see no holes, no dents in the valve cover and everything looks "normal" for the deuce. Would it be likely that the head gasket blew and spilled out oil. Like I said earlier, I know some fuel got into the oil because the crankcase has too much in it. What would be the next best step to take. Should I see if it will turn over?

You most likely dropped a liner. Do a compression test. Here is a picture of the tool you will need. It is an adapter made by Snap On for doing Mack engines.

 

[roscoe]

 

[roscoe]

You most likely dropped a liner. Do a compression test. Here is a picture of the tool you will need. It is an adapter made by Snap On for doing Mack engines.

Thanks. That is what I was planning on doing next and wasn't sure what I needed. Haven't had any time lately to do much with it. I did drain out about 2 gallons of excess oil/ fuel mix, reassembled the fuel shut off and cranked the engine, with the fuel off, and it turned over fine. Also plugged the forwarding hole with a 7/8 th inch rubber plug.

 

[Goomer214]

Halon, put a bottle in the cab and run the lines to the intake right at the engine. Will be more expensive but halon would be the ideal solution in this.

co2 will work fine no need to get expensive both displace air

 

[frank8003]

what to plug big hole with

see post #79
There the .doc works but a the .docx in post # 78 did not ..................

 

[frank8003]

what to plug big hole with

What size lab rubber plug jams in good into the alternate air pipe on M35A2?
Is it rubber plug size six or plug 6-1/2?
I need to plug it up.

View attachment 502870
View attachment rubber plug 07082014.doc

 

[QUADJEEPER]

I just used a bolt and a couple of washers, didn't want it to be sucked in. I tested it last weekend after making a quick release for the intake mushroom and a block off. Major suction even at only 2k RPM. A rubber plug would get sucked right in, I'd think.