I've seen it happen on 3 different 4 strokes as well. A Mitsubishi Bulldozer, an NHC-250, and a LDT-465 (deuce engine). The dozer was a pain in the ass. We couldn't stall it and turning the key off didnt kill it. Ended up having to yank the fuel line. All 3 also shit exhaust out of the intake and ruined the air filters.One last diesel noob question- the running backwards thing can only happen with a two stroke, I'm ASS-uming?
Wouldn't the fueling event be out of time? (now you got me thinking,lol)I've seen it happen on 3 different 4 strokes as well. A Mitsubishi Bulldozer, an NHC-250, and a LDT-465 (deuce engine). The dozer was a pain in the ass. We couldn't stall it and turning the key off didnt kill it. Ended up having to yank the fuel line. All 3 also shit exhaust out of the intake and ruined the air filters.
6v71 has exhaust valves in the heads just like a regular motor. The slots in the sleave is the intake ports. The 6v71 has 4 exhaust valves per cylinder. The engines will not run without the supercharger. If you get into the engine for any reason leave all the carbon build up. If you start scraping it and dont get it all out its a bad day.
Whoops, made sense in my head at that moment. I'm too young to have seen much more than 60 series come through on the regular.Exhaust valves in head. Intake thru ports in cyl sleeve
Nope.Wouldn't the fueling event be out of time? (now you got me thinking,lol)
Also, oil flow through stuff like main bearings might be a problem since some are designed directionally. (not directed at you specifically, just the backwards running engine discussion in general)
Same here. I'm not sure what caused mine to, but hearing that thing wind out with exhaust coming out of the air cleaner will wake you the fawk up! lol:laughing::laughing::laughing:
I've seen them run backwards and run away backwards. I don't remember what the common issue was that caused it, but 90% of the time it's someone inexperienced.
Gets real interesting when it happens. I've been present for two instances. Was driving during the one. First time driving I made the mistake of lugging the engine going up a hill in West Virginia. It backfired, rolled backwardsand all of a sudden we were accelerating down the hill. I got it stopped and finally was able to stall the damn thing out. Took me about 20 minutes to pry the seat cushion out of my ass so I could check the truck over. Old timer stopped to check on us and gave me the golden advice to run it like you want it to blow up. That old dump truck is still running up and down the mountains on the Ohio/West Virginia line.In order to properly drive a 2 stroke Detroit, first, get into a huge fight with your wife, then slam your thumb in the door, then spill your coffee on something important. You drive that engine like you hate it, and you're trying to rip it out of the truck.
Whilst I've never actually seen it happen, they can start and run backwards.
Nope, any mechanical diesel can. I had a hand cranked 2 cylinder diesel running an air compressor bump off TDC when it was being cranked to start, started backwards, pumping exhaust out the air filter, suckling air through the muffler. Scariest part was the 18" crank handle that cams out when the engine fires, if it fires backwards though it won't come loose, and starts flailing at camshaft speed...One last diesel noob question- the running backwards thing can only happen with a two stroke, I'm ASS-uming?
Ok,. I guess all that dust coming out of the air filter on the fender was just an anomaly. I remember it well because we were pouring a foundation and that chute nearly cleaned all of us off the wall.When a 2 stroke diesel runs backwards,the intake and exhaust still function normally. The direction that the crank turns makes no difference.
The only issue I'm aware of is the oil pump may be direction sensitive.