Is the 444 Cummins Engine a good engine?
Is the 444 Cummins Engine a good engine?
A 444 is an engine that needs a lot of tender loving care to get it to run correctly, there are a lot of pieces that make the STC operate properly, and any leaks in the system cause problems. I use to do a lot of work on these units, and customers that ran them seemed to make money.
What makes a Cummins rough idle on startup?
Consider that the grid heater is drawing upwards of 200A when it cycles on. Then there’s those supplemental cabin heaters trying to work too. And, if it’s cold enough, the fuel filter heaters and DEF line heater will be asking for juice. And all that doesn’t include the cabin demands for power (HVAC blower, heated seats/steering wheel, radio etc).
What should the idle speed be on a Cummins Ram?
If the block heater has been plugged in for a few hrs, the engine will initially idle at about 650 RPM and increase to high idle after about two minutes. With an OAT of about 20F or higher and with no block heater assist, the engine will initially idle at 650 for the first two minutes.
When does auto activation of high idle start?
Auto activation of high idle is dependant on OAT and coolant temp. It the engine is started at OATs of about 20F or below and without the benefit of a block heater, the idle will increase to 1000 RPM shortly after startup.
A 444 is an engine that needs a lot of tender loving care to get it to run correctly, there are a lot of pieces that make the STC operate properly, and any leaks in the system cause problems. I use to do a lot of work on these units, and customers that ran them seemed to make money.
Why does my diesel engine have blue smoke?
Blue engine smoke is the rarest type of smoke emanating from a diesel engine. The presence of blue smoke is an indication of burning oil. Blue smoke should not be ignored but is common when starting an engine in a cold weather. The oil thins out when it is cold and some could escape into the cylinder and be burnt.
When to shut down a diesel engine with smoke?
No matter the color of the smoke it is not something you should ignore. A properly working and maintained diesel engine should produce no visible smoke. Make sure to shut down the engine immediately if you encounter excessive smoke as further heat or load could severely damage the engine further.
What kind of smoke comes from a diesel engine?
Blue Smoke: Blue engine smoke is the rarest type of smoke emanating from a diesel engine. The presence of blue smoke is an indication of burning oil. Blue smoke should not be ignored but is common when starting an engine in a cold weather.
What was the first Cummins with step timing?
The 444 was the first Cummins with step-timing. You probably won’t work on it yourself but the really best trick is setting the injectors the old way, outer base circle. 75 in-lbs on the downstroke. I know some of you Cummins guys heads are going to explode but 1.1 million is enough proof for me.
What’s the problem with a Cummins 86-90?
The low flow cooling is the problem with all cummins motors from 86-90. What cpl is it? You need to convert the cooling over, not a cheap thing. The industrial thermostat housing is over $1200 plus the top and bottom tanks for the radiator, water pump, acc drive pulley swap for the wtr pmp belt, hose plumbing etc.etc.etc…
What kind of cooling does a 444 cam 4 have?
The 444/440 Plus is just a Big Cam 4 with low-flow cooling. Yes, some people had some trouble with the cooling but pretty sure most of it was related to radiators leaking thru the baffles. The 444 was the first Cummins with step-timing.
