mowerman Posted Saturday at 05:52 PM Author Share Posted Saturday at 05:52 PM ok its american Quote Link to comment https://www.bigmacktrucks.com/topic/73081-finally-some-dm-progress/page/54/#findComment-572936 Share on other sites More sharing options...
mrsmackpaul Posted Saturday at 08:17 PM Share Posted Saturday at 08:17 PM Unless someone has tampered with the injector pump it shouldn't need adjustment They are all gear driven so it shouldn't of moved Paul 1 Quote Link to comment https://www.bigmacktrucks.com/topic/73081-finally-some-dm-progress/page/54/#findComment-572952 Share on other sites More sharing options...
mowerman Posted Saturday at 08:38 PM Author Share Posted Saturday at 08:38 PM Thanks for that. I did mention. I found one exhaust valve too tight most everything else was pretty close. I’m hoping maybe that will cure my issue. I also thought of that. I don’t think it’s ever been changed. It sure doesn’t look like it. Quote Link to comment https://www.bigmacktrucks.com/topic/73081-finally-some-dm-progress/page/54/#findComment-572962 Share on other sites More sharing options...
mowerman Posted 19 hours ago Author Share Posted 19 hours ago 18 hours ago, mrsmackpaul said: Unless someone has tampered with the injector pump it shouldn't need adjustment They are all gear driven so it shouldn't of moved Paul Yes, I thought of that but like a car back in the day with a.(NORMAL)distributor would need adjustment occasionally 2 Quote Link to comment https://www.bigmacktrucks.com/topic/73081-finally-some-dm-progress/page/54/#findComment-573000 Share on other sites More sharing options...
mechohaulic Posted 18 hours ago Share Posted 18 hours ago technically it's not the pump needing adjustment from it's own fault. like the distributor setting ; adjustment of the pump is to compensate for all the rest of the engine wear and tear. front eng drive train has a number of gears between crank and inj pump gear. and we ALL know with age parts wear out. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/73081-finally-some-dm-progress/page/54/#findComment-573002 Share on other sites More sharing options...
mrsmackpaul Posted 14 hours ago Share Posted 14 hours ago Not a E6 Mack motor , they last for ever , Barry we need a R model one of these picture things Or a DM or U Model for this thread Back in the dim dark days when dinodoors (that's how my boy said when he was maybe 3 years of age) some of the early diesels had timing chains for the injector pump and cam etc These old buckets of bolts needed regular adjustment to keep them starting and running Starting old diesels was a big enough drama Now on a old Cat diesel motor they need timing because the lifters in those old injector pumps are like lifters on valves, if the the clearance is to great the timimg is to retarded and if the clearance is to small the timing is adavanced On a E6 Mack motor, they are set and forget Cummins are like a Cat as are 2 stroke Detroit's Mack motors are spot on once set correctly All those other buckets of bolts need timing adjustment If your gears are that badly worn your gunna have a lot bigger issue like no oil pressure or bent valves Anyway, enough waffle from me Go and check the timing Paul 1 Quote Link to comment https://www.bigmacktrucks.com/topic/73081-finally-some-dm-progress/page/54/#findComment-573022 Share on other sites More sharing options...
Joseph Cummings Posted 13 hours ago Share Posted 13 hours ago On 4/5/2025 at 9:02 AM, mowerman said: Accessive smoking was the original problem Usually white smoke is late timing. Could be a bunch of other things too. Cold, low compression, bad nozzle spray pattern, fuel contaminated with a bunch of gas will all make white smoke too 1 Quote Link to comment https://www.bigmacktrucks.com/topic/73081-finally-some-dm-progress/page/54/#findComment-573023 Share on other sites More sharing options...
Joey Mack Posted 13 hours ago Share Posted 13 hours ago You dont suspect water causing white smoke? Of course i hope not... 1 Quote Link to comment https://www.bigmacktrucks.com/topic/73081-finally-some-dm-progress/page/54/#findComment-573024 Share on other sites More sharing options...
Joseph Cummings Posted 13 hours ago Share Posted 13 hours ago Just now, Joey Mack said: You dont suspect water causing white smoke? Of course i hope not... Yeah, well there is the really suckiful stuff like that too 1 Quote Link to comment https://www.bigmacktrucks.com/topic/73081-finally-some-dm-progress/page/54/#findComment-573025 Share on other sites More sharing options...
Joey Mack Posted 13 hours ago Share Posted 13 hours ago I hope its not water.. Quote Link to comment https://www.bigmacktrucks.com/topic/73081-finally-some-dm-progress/page/54/#findComment-573026 Share on other sites More sharing options...
Joey Mack Posted 13 hours ago Share Posted 13 hours ago Ive been following Bob for a few years now... It would be great if he could drive it around and get it really heated up and get it to work a bit.. i hope it just clears up.. running it in the yard yields bad results in his case... Bob?? You listening ?? 2 Quote Link to comment https://www.bigmacktrucks.com/topic/73081-finally-some-dm-progress/page/54/#findComment-573027 Share on other sites More sharing options...
Joseph Cummings Posted 13 hours ago Share Posted 13 hours ago 1 minute ago, Joey Mack said: I hope its not water.. It's a 2 valve 672 cubic inch block and heads. I haven't seen many of them get water into the cylinder. Sleeve is dry, and the heads don't crack into the water jacket much. I've seen some leak from the head gaskets, but that was external seepage 2 Quote Link to comment https://www.bigmacktrucks.com/topic/73081-finally-some-dm-progress/page/54/#findComment-573028 Share on other sites More sharing options...
Joey Mack Posted 13 hours ago Share Posted 13 hours ago I get it, JC. Just think he needs to run it around town.. i doubt its water, just needs to run. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/73081-finally-some-dm-progress/page/54/#findComment-573029 Share on other sites More sharing options...
mowerman Posted 12 hours ago Author Share Posted 12 hours ago I drove at home when i bought it 30 years ago. That’s the only time it’s ever seen the road. I started every weekend and let it run for about 10 minutes. That’s about the biggest workout it gets. Quote Link to comment https://www.bigmacktrucks.com/topic/73081-finally-some-dm-progress/page/54/#findComment-573035 Share on other sites More sharing options...
mowerman Posted 12 hours ago Author Share Posted 12 hours ago I’m gonna try to put it together tomorrow and start it and see what happens thanks for your input everyone Quote Link to comment https://www.bigmacktrucks.com/topic/73081-finally-some-dm-progress/page/54/#findComment-573036 Share on other sites More sharing options...
mowerman Posted 11 hours ago Author Share Posted 11 hours ago If this helps anybody it’s not consistent sporadic throw a couple of puffs I then it goes away for a few seconds maybe 10 when it comes back again on and off it’s not steady also mentioned a buddy of mine down there and California recommended that to me a long time ago about advancing the pump slightly that also works that was his first suggestion when I mentioned the issue norm Taunton… some of you know him Quote Link to comment https://www.bigmacktrucks.com/topic/73081-finally-some-dm-progress/page/54/#findComment-573041 Share on other sites More sharing options...
mrsmackpaul Posted 7 hours ago Share Posted 7 hours ago Sounds like air in fuel issue Could compression test the motor Paul Quote Link to comment https://www.bigmacktrucks.com/topic/73081-finally-some-dm-progress/page/54/#findComment-573062 Share on other sites More sharing options...
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