bdstick
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I was starting a 5 ton, w a cummins, it started a few times, then revved out a little and now it has massive rocker clearance approx. 3/4 in.on eight or so valves...... what happened ?
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So are you saying it run away on you ?I was starting a 5 ton, w a cummins, it started a few times, then revved out a little and now it has massive rocker clearance approx. 3/4 in.on eight or so valves...... what happened ?
Or mack or multifuel...NHC250 or 8.3?
Did you prime it before you tried to start it ?I am not sure of engine, it has a turbo, the front cover has a tach cable coming out of it. I can get more info tomorrow. we were starting it on a can of starting fluid. it started and died a few times, then it revved out for about 10 to 15 seconds, it still had not picked up fuel. now it has massive valve clearance. I looked in the oil cap and did not see the rocker move when cranking the engine over. I pulled the front cover and valve cover, nothing broken , push rods not bent. what are the lifter like ? is it possible they are collapsed ? thank you for any help
Sumthin done broke . . .I was starting a 5 ton, w a cummins, it started a few times, then revved out a little and now it has massive rocker clearance approx. 3/4 in.on eight or so valves...... what happened ?
Well since it is now taboo to tell them to read the manuals , this looks like a expensive lesson in not doing so .Don't spray ether directly into it.
Doghead you shouldn't say that statement this guy could be new to the hobby and take you seriously because of your years here and post count.
I will take 8.3 for $300, LOLThis is turning into a game show. I was going to say "I'll take Cummins 250 for $500 please", and guess the unit injectors are stuck in the down position, hence the rocker clearance (like a 2 stroker Detroit Diesel), but when he said tach cable from front cover, it threw a stick in the spokes. I don't know where the tach cable is on a 250 engine, I don't have much experience with them at all, none really.
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