mack running bad

wow 40-45 hours on a cam, i was thinking about half that

 

well i guess we will have a answer here before too long dropped the truck off at Mack this afternoon, its on the scheduled for tomorrow but said they might be able to look at it before the end of the day today.

when i took it in, i was just bobtail the miss wasn't near as apparent, it would miss/white smoke in the higher gears rather than the lower gears when you first apply power under light/med throttle other than idling rough. both jakes actually worked till oil temp got up to 160. then the low stage (front head) quit working again. i mentioned that to the service writer to make a note of it and he kinda gave me the impression that's not a good sign.

oh and to add insult to injury i pulled a bonehead move this morning with my pickup too and put a big dent in the rear 1/4 panel, i was at my shop doing a few different things i had hooked up my small flatbed car trailer earlier in the day because i was going to drop a vehicle off at Mack so i didn't have to find a ride home when i drop the truck off, couple hours passed by, was going to run quick to do something else, jumped in my pickup looked right over the top of the small flat bed trailer backed up to turn around and jack knifed it. still can't believe i did that.

 

they have only had my truck in a bay for a few hours and i am already remembering why i haven't taken anything into a shop in several years.

i stopped by there tech isnt working on my truck he is working on another, but he had looked at it a bit earlier. i ask him what he has found/looked at so far, he said when he checked he got good oil flow out of the jake break, i ask him what the oil temp was, he says the engine was stone cold......####ing really if i say the jake works at oil temps sub 160 why would you even check it stone cold. i politely remind him that the jake break works oil temp sub 160 and he goes well i guess we will have to warm it up and check it again......really ya think,

he thinks there is a blockage in a oil passage in the top end, and a injector problem because there is some stored injector codes, witch i am aware of this truck has randomly thrown some injector codes for a couple mins a few times a week for 3 years without ever affecting how it ran no more frequently now. not ruling that out, and this would certainly be better than what i think the problem is. also a blockage does not explain low oil pressure on the gauge. let alone when i pulled the jake solenoids the screens were perfectly clean. and my engine has run synthetic oil as long as iv owned it and always been changed before 500 engine hours

 

im about to check on my oil sample i sent in almost 2 weeks ago and see if it got lost in the mail or something because i still have not gotten my results and if it is a bearing problem it should show that. from where i mailed it from they should of had it within 2 days. the lab is in the same town i live in was mailed from about 100 miles away if they still havent gotten it ill see if i can bring them a new sample and get it tested right away

edit: update, i stopped in at butler where i sent my oil sample they have it and are processing it, said they don't have complete results yet. but partial count is low so they don't expect there to be a bunch of bearing material. but would give me a call in the next couple hours with the results

 

well so far we have found some square unit pump rollers and eaten injector lobes

 

yeah i hope so i might have been loosing power longer than i realized my truck hasn't seemed to pull like i remembered it for a while but there was no sudden loss off power it just seemed like gee i thought i used to pull this hill a little better than that, till recently when i am like ok i know im heavy but i really shouldn't be on the floor to do the speed limit on fairly flat ground