ENDT 673 in cold weather

[Joey Mack]

yep...

[BOBWhite]

3 hours ago, skydawg said:

Thanks for all the info.And I didn`t know to floor the pedal,I thought the injection pump compensated for different temp mixture requirements.It`s Not Easy Bein` Green.

There was a sticker on Macks (anyone have a picture of it?) that gives starting instructions that say to put the petal to the floor until the engines up to speed.

John Deere engines start about how you describe by dumping a bunch of fuel into the cylinders and hoping for the best. Thats why the old ones start so violently.    Macks start by retarding the injection timing and letting the piston compress the air to the max before injecting the fuel in. Macks always started really good compared to others it seemed. 

[70mackMB]

Nothing like how a cold old Mack's exhaust can bring a tear (or more) to your eyes! 😂    .....Hippy

[skydawg]

Lol,I`ll be getting smoke shifters from the neighbors for Christmas.

[terry]

1 hour ago, 70mackMB said:

Nothing like how a cold old Mack's exhaust can bring a tear (or more) to your eyes! 😂    .....Hippy

Especially in a closed garage!!    terry

[mowerman]

i expect you probably figured out you will also have instant cab  heat as well....my cruiseliner was the best it was 140 when i started it...good luck.bob

[phildirt]

You don't need no stinking block heater if you have one of these and a box of capsules!

The manual says nothing about holding the foot feed all the way down - It says: "Depress accelerator half-way."

 

Edited November 19, 2022 by phildirt

[mowerman]

Mine has one. I also remember reading the same thing about the gas pedal and my dad’s 1970 U model… my DM will not start without either summer or winter not sure why, but I think I think it needs a valve adjustment. I have never done that.Bob

[85snowdog]

3 hours ago, phildirt said:

You don't need no stinking block heater if you have one of these and a box of capsules!

The manual says nothing about holding the foot feed all the way down - It says: "Depress accelerator half-way."

 

Not saying its right or wrong. But I think this is the sicker BOBWhite referred to . 

[phildirt]

That sticker sure isn't for any of the ENDT 673 engines.

The same book shown above, Form No. TS-442, shows an operating range (rpm) of 1,500 to 2,100, idle speed 550 -575. Governed speed: full load 2,100, no load 2,350.

Load it up heavy and lug it down to 1,020 rpm, it will be fine - for a short time, then stop and replace head gaskets.

Edited November 19, 2022 by phildirt

[Mark T]

1 minute ago, phildirt said:

That sticker sure isn't for any of the ENDT 673 engines.

You don't think a 673 would operate at 1020 RPMs  😂

[doubleclutchinweasel]

I think you are both right.  Different vintage engines had different starting instructions.  I have seen both the half-pedal and the full-pedal instructions.

[phildirt]

"ENDT 673 in cold weather" is the header on this thread.

I am not arguing with anybody about where to hold the foot feed - just showing what the Mack manual says about starting an ENDT 673 engine in cold weather.

[doubleclutchinweasel]

2 hours ago, phildirt said:

"ENDT 673 in cold weather" is the header on this thread.

I am not arguing with anybody about where to hold the foot feed - just showing what the Mack manual says about starting an ENDT 673 engine in cold weather.

And we thank you for that post!

[roadranger]

On 11/18/2022 at 4:12 PM, mechohaulic said:

OH the good ole days. watching the exhaust warm and change colors. amazing thing for me is ; back in the good days with all the exhaust smoke i never noticed the inside windows of my vehicle get as cloudy as they do today with all the emission BS. and i don't smoke .

That's all the interior plastic gassing off that's clouding up your windows.