Lmackattack Posted January 20, 2006 Share Posted January 20, 2006 When Its very cold out how do you get your old mech engine going.I dont like to use either (unless very cold) and cant always plug in the blook heater.with fresh batts, no block heater, I can crank it over and it will catch after about 5 sec of cranking. I have noticed that if I keep the throttle pedal 1/2 way to the floor, it helps get it going and I can let up before the unburned fuel chokes up the engine and makes the hard knock sounds... If I dont give it extra fuel on start up it struggles a little more and takes a few trys...pluged in it starts just like in summer time.Is it safe to give it extra fuel on inital cranking it over??? Quote Link to comment https://www.bigmacktrucks.com/topic/726-cold-starting/ Share on other sites More sharing options...
Freightrain Posted January 20, 2006 Share Posted January 20, 2006 Mine gets held to the FLOOR to get running when below freezing. I think that is what is in the manual if I remember right? Then I ease up as it starts to catch and actually run. I then have to hold it up to 1000 rpm or so to keep it running til it gets over the lope-da-lope routine.I have not had to use ether since I put the 4-12v batteries in it. It cranks til I'm blue in the face and never slows down. Purrrfect! Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/726-cold-starting/#findComment-3475 Share on other sites More sharing options...
roadusercharges Posted January 20, 2006 Share Posted January 20, 2006 Have you guys heard of using air?.or do you live in the Artic?. 1/4 throttle is more than enough to turn the engine 1 revolution to get it fired up in the cold here. Quote Link to comment https://www.bigmacktrucks.com/topic/726-cold-starting/#findComment-3481 Share on other sites More sharing options...
Lmackattack Posted January 20, 2006 Author Share Posted January 20, 2006 In winter time It can get down to -20F but mostly hangs around 20-30F because of the warm lake effectsummer time is anyware from 60-100F. Larry I just found my manual and it says depress the throttle on cold starting. I thought I had heard that before but just wanted see what others thought about that. Quote Link to comment https://www.bigmacktrucks.com/topic/726-cold-starting/#findComment-3483 Share on other sites More sharing options...
fullfuel01 Posted January 20, 2006 Share Posted January 20, 2006 i don't think that it change something to put the fuel 1/2 when starting. on a Mack if parking brake are pulled no air is going to the cylinder on the front of the pump and it's suppose to be full fuel. Quote Link to comment https://www.bigmacktrucks.com/topic/726-cold-starting/#findComment-3489 Share on other sites More sharing options...
Mack Doctor Jr. Posted January 21, 2006 Share Posted January 21, 2006 I was slways told to fire-wall macks till they hit on all 6. I drove an R model that had so much fuel turned to it you couldnt touch the pedal at all, it would make it worse. Make sure the ether u buy is for diesel engines. I think they have oil additves in some ethers specifically for diesel engines. Quote Link to comment https://www.bigmacktrucks.com/topic/726-cold-starting/#findComment-3494 Share on other sites More sharing options...
JD 5020 Posted January 21, 2006 Share Posted January 21, 2006 Well I don’t have a Mack yet but I have a cold natured tractor with a 6 cylinder in it and if it’s below 50 degrees it’s hard to start. It gets held wide open till it fires and then I ease up on it. Some times playing with the throttle a bit to make sure it picks up good on all cylinders. And if all else fails a snort or two of either. Quote Link to comment https://www.bigmacktrucks.com/topic/726-cold-starting/#findComment-3500 Share on other sites More sharing options...
Tombstone Posted April 15, 2006 Share Posted April 15, 2006 Well I don’t have a Mack yet but I have a cold natured tractor with a 6 cylinder in it and if it’s below 50 degrees it’s hard to start. It gets held wide open till it fires and then I ease up on it. Some times playing with the throttle a bit to make sure it picks up good on all cylinders. And if all else fails a snort or two of either.Here's a simple tip for starting your motor on a cold day. Take a Benzomatic torch(small propane) and move it back and forth on the intake manifold for a .couple of minutes. It'll heat the air going into the cylinders allowing for a quick start first time everytime. Also any fuel you put in the cylinders is good for lubrication, likewise the longer you crank before starting the more oil pressure you have at the bearings.Once you achieve maximum oil pressure it's good to run the motor at 1k rpm till it warms up. Always make sure your motor is warmed up before moving underload.TombstoneHere's a simple tip for starting your motor on a cold day. Take a Benzomatic torch(small propane) and move it back and forth on the intake manifold for a .couple of minutes. It'll heat the air going into the cylinders allowing for a quick start first time everytime. Also any fuel you put in the cylinders is good for lubrication, likewise the longer you crank before starting the more oil pressure you have at the bearings.Once you achieve maximum oil pressure it's good to run the motor at 1k rpm till it warms up. Always make sure your motor is warmed up before moving underload.Tombstone.PS-If you care about your motor you won't put ether to it. Quote Link to comment https://www.bigmacktrucks.com/topic/726-cold-starting/#findComment-5357 Share on other sites More sharing options...
werkhorse Posted April 15, 2006 Share Posted April 15, 2006 as a mechanic i've alawy's found that if ya give it a few pumps on the lift pump( as if your bleading air out of it ,but with all the bleeder's closed) till it gets a little harder to pump( slight pressure in the system )it should start just fine. This is in Tasmania (where i am ) where temps get down to -5 to -10 degree's celcius Quote Link to comment https://www.bigmacktrucks.com/topic/726-cold-starting/#findComment-5358 Share on other sites More sharing options...
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