Gorilla Posted August 5 Share Posted August 5 Hi Everybody, Background story is truck ran perfect although needed work(unrelated to the engine), everything from fan shroud to fuel tanks were damaged so it has been sitting around while i sorted it all out. As I only disconnected the fuel supply line at the tank i figured it wont draw air into the fuel system (boy was i wrong) but it did sit like that for over two years while i sorted other things out. Here is what i have done: *repeatedly primed it with hand pump and pressure builds and can feel it but no start *cracked the the lines to the injectors one by one and found there was air in the system so hand pumped till clean fuel came out, tried to start and nothing. *cracked with injectors and cranked it and clean fuel came out of all injector lines, tightened back up, primed hand pump nothing. only thing i can think of that i did not do is check the fuel filters are full of fuel but as i did not have a filter wrench with me today i did not do that but will tomorrow. How do i read the blink lights to get codes and is there a code list you could give me? Its a 2003 Etech 410hp Other option is while i was painting the frame and disconnected stuff i may have left some sensor disconnected but i am pretty good at making sure all is well generally although my experience is more so with cars and not trucks and have bled diesel fuel systems without issue in cars. I have purchased a vocom but it will be a few weeks away and hoping to get it running at least before that. Thank you in advance, Chris Quote Link to comment https://www.bigmacktrucks.com/topic/74419-having-trouble-starting-a-2003-mack-ch/ Share on other sites More sharing options...
fjh Posted August 5 Share Posted August 5 These can be a bastard to get started are you cracking the lines at the head? Not at the pumps! If you’re doing it at the pumps you’ll be there for ever trying! Just sayin! Quote Link to comment https://www.bigmacktrucks.com/topic/74419-having-trouble-starting-a-2003-mack-ch/#findComment-556484 Share on other sites More sharing options...
Gorilla Posted August 5 Author Share Posted August 5 14 minutes ago, fjh said: These can be a bastard to get started are you cracking the lines at the head? Not at the pumps! If you’re doing it at the pumps you’ll be there for ever trying! Just sayin! Im cracking the lines at the head as figured air rises. Why can they be a bastard to get started? Im starting to worry. Quote Link to comment https://www.bigmacktrucks.com/topic/74419-having-trouble-starting-a-2003-mack-ch/#findComment-556485 Share on other sites More sharing options...
Gorilla Posted August 5 Author Share Posted August 5 (edited) Should add, i noticed that if i walk away after hand pumping the fuel primer and come back 5 minutes later it is no longer hard and i need to pump it a bit more. Starting to wonder if the fuel check valve is stuck open? Also after cranking the engine the fuel primer is soft again. Edited August 5 by Gorilla Quote Link to comment https://www.bigmacktrucks.com/topic/74419-having-trouble-starting-a-2003-mack-ch/#findComment-556486 Share on other sites More sharing options...
Joey Mack Posted August 5 Share Posted August 5 Fuse #40 in the fuse box under the hood next to the steering shaft, is the EECU. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74419-having-trouble-starting-a-2003-mack-ch/#findComment-556487 Share on other sites More sharing options...
fjh Posted August 5 Share Posted August 5 7 hours ago, Gorilla said: Im cracking the lines at the head as figured air rises. Why can they be a bastard to get started? Im starting to worry. Getting the air out can be painful thus doing the injection line at the head ! Get solid fuel to at least three cylinders! No foam Quote Link to comment https://www.bigmacktrucks.com/topic/74419-having-trouble-starting-a-2003-mack-ch/#findComment-556509 Share on other sites More sharing options...
Joey Mack Posted August 5 Share Posted August 5 (edited) if he loosens the nuts at the head and pumps the primer, fuel should spray out.. lock it down and it will fire up within 10 seconds of cranking.. I'm wondering if the primer is leaking back, or in rare cases, which I have found... fuel leaks into the engine through the pump shaft seal.. 3 bolts to remove the fuel pump, leave the lines on and lean it back and pump the primer to see if it is pushing fuel into the engine.. I still am not sure if this engine does run and looses prime after a short time of being shut off. since its an ASET, ''I'' need more info.. I know this engine series..... Edited August 6 by Joey Mack Pour sell fone sperring 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74419-having-trouble-starting-a-2003-mack-ch/#findComment-556510 Share on other sites More sharing options...
fjh Posted August 5 Share Posted August 5 Very possible! Quote Link to comment https://www.bigmacktrucks.com/topic/74419-having-trouble-starting-a-2003-mack-ch/#findComment-556512 Share on other sites More sharing options...
Gorilla Posted August 6 Author Share Posted August 6 1 hour ago, Joey Mack said: if he loosens the nuts at the head and pumps the primer, fuel should spray out.. lock it down and it will fire up within 10 seconds of cranking.. I'm wondering if the primer is leaking back, or in rare cases, which I have found... fuel leaks into the engine through the pump shaft seal.. # bolts to remove the fuel pump, leave the lines on and lean it back and pump the primer to see if it is pushing fuel into the engine.. I still am not sure if this engine does run and looses prime after a short time of being shut off. since its an ASET, ''I'' need more info.. I know this engine series..... Its an Etech not Aset, today im going to read codes, possible one of the sensors (crank or cam) is causing computer not to send signal to injectors too..... Quote Link to comment https://www.bigmacktrucks.com/topic/74419-having-trouble-starting-a-2003-mack-ch/#findComment-556517 Share on other sites More sharing options...
Joey Mack Posted August 6 Share Posted August 6 l Quote Link to comment https://www.bigmacktrucks.com/topic/74419-having-trouble-starting-a-2003-mack-ch/#findComment-556518 Share on other sites More sharing options...
Gorilla Posted August 6 Author Share Posted August 6 8 hours ago, Joey Mack said: Fuse #40 in the fuse box under the hood next to the steering shaft, is the EECU. ill check this out and report back Quote Link to comment https://www.bigmacktrucks.com/topic/74419-having-trouble-starting-a-2003-mack-ch/#findComment-556520 Share on other sites More sharing options...
JoeH Posted August 6 Share Posted August 6 Your battery voltage sucks. If the voltage drops to 9.5 volts while cranking then the engine computer shuts off momentarily until voltage comes back up. You need good fresh batteries. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74419-having-trouble-starting-a-2003-mack-ch/#findComment-556521 Share on other sites More sharing options...
JoeH Posted August 6 Share Posted August 6 Also those injector lines run at 26,000psi. Yes, 26,000. DO NOT crack them loose while running, it will blow diesel fuel right into your skin and kill you. Quote Link to comment https://www.bigmacktrucks.com/topic/74419-having-trouble-starting-a-2003-mack-ch/#findComment-556522 Share on other sites More sharing options...
Joey Mack Posted August 6 Share Posted August 6 26,000 PSI? really... I didnt know that.. Quote Link to comment https://www.bigmacktrucks.com/topic/74419-having-trouble-starting-a-2003-mack-ch/#findComment-556523 Share on other sites More sharing options...
JoeH Posted August 6 Share Posted August 6 To check codes, key on, with cruise control OFF press/hold the set/decel rocker down until the lightning bolt goes off. Let go and count the 2 digit code it blinks out to you. Repeat until you get repeating codes. List codes here and someone can identify them for you if you don't have a copy of them. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74419-having-trouble-starting-a-2003-mack-ch/#findComment-556524 Share on other sites More sharing options...
JoeH Posted August 6 Share Posted August 6 7 minutes ago, Joey Mack said: 26,000 PSI? really... I didnt know that.. You made me second guess myself, had too look it up... 😎 Quote Link to comment https://www.bigmacktrucks.com/topic/74419-having-trouble-starting-a-2003-mack-ch/#findComment-556525 Share on other sites More sharing options...
JoeH Posted August 6 Share Posted August 6 https://macktrucks.vg-emedia.com/ProductDetail.aspx?ProductId=6156 You can download the vmac III book for free from Mack or buy it from your dealer or online. Book # 8-211 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74419-having-trouble-starting-a-2003-mack-ch/#findComment-556526 Share on other sites More sharing options...
Joey Mack Posted August 6 Share Posted August 6 well I obvioulsy missed that section.. Quote Link to comment https://www.bigmacktrucks.com/topic/74419-having-trouble-starting-a-2003-mack-ch/#findComment-556527 Share on other sites More sharing options...
Gorilla Posted August 6 Author Share Posted August 6 20 minutes ago, JoeH said: Your battery voltage sucks. If the voltage drops to 9.5 volts while cranking then the engine computer shuts off momentarily until voltage comes back up. You need good fresh batteries. ah crap you may be onto something, gonna check that too, thanks Quote Link to comment https://www.bigmacktrucks.com/topic/74419-having-trouble-starting-a-2003-mack-ch/#findComment-556528 Share on other sites More sharing options...
Gorilla Posted August 6 Author Share Posted August 6 only 6 minutes ago, JoeH said: https://macktrucks.vg-emedia.com/ProductDetail.aspx?ProductId=6156 You can download the vmac III book for free from Mack or buy it from your dealer or online. Book # 8-211 downloaded it last night, thanks for that advice Quote Link to comment https://www.bigmacktrucks.com/topic/74419-having-trouble-starting-a-2003-mack-ch/#findComment-556530 Share on other sites More sharing options...
Joey Mack Posted August 6 Share Posted August 6 crazy crap is that I was trained by Mack.. I guess i was asleep during this part of the lesson,, too funny.. Might be time for me to stop posting on -/ASET's... i'm forgetting too much.. Quote Link to comment https://www.bigmacktrucks.com/topic/74419-having-trouble-starting-a-2003-mack-ch/#findComment-556531 Share on other sites More sharing options...
JoeH Posted August 6 Share Posted August 6 24 minutes ago, Joey Mack said: crazy crap is that I was trained by Mack.. I guess i was asleep during this part of the lesson,, too funny.. Might be time for me to stop posting on -/ASET's... i'm forgetting too much.. BMT would be a lonely place without your input. Quote Link to comment https://www.bigmacktrucks.com/topic/74419-having-trouble-starting-a-2003-mack-ch/#findComment-556532 Share on other sites More sharing options...
JoeH Posted August 6 Share Posted August 6 30 minutes ago, Gorilla said: ah crap you may be onto something, gonna check that too, thanks I know this one first hand, lol. Managed to get our truck puffing on ether and as soon as we stopped cranking the EECU fired up and took over and kept it running. Quote Link to comment https://www.bigmacktrucks.com/topic/74419-having-trouble-starting-a-2003-mack-ch/#findComment-556533 Share on other sites More sharing options...
fjh Posted August 6 Share Posted August 6 We used to do a ton of exhaust gaskets! Meant disassemble of all injection lines ! We would place bets on who could make it run on the first few cranks ! The only way to do this is to get fuel running at the injection lines at the head!I was the only guy in the shop that would bleed this way cause someone along the line told these people to never bleed at the head! Where the starter out instead I guess! Anyway that’s how to make them start and run on all six 4 turn or less! In this case my way or the highway!😡 Quote Link to comment https://www.bigmacktrucks.com/topic/74419-having-trouble-starting-a-2003-mack-ch/#findComment-556534 Share on other sites More sharing options...
Gorilla Posted August 6 Author Share Posted August 6 Ok just got back from the truck and found that no signal at injectors so electrical, checked voltage on battery while cranking and about 8.5v SOOOO tomorrow gonna put different more powerful batteries in and lets see. Fkn sure i bled it right, to be sure to be sure today cracked a two injectors and got no bubbles (at the head). Thank you all for the input i am seriously greatfull........ seems i didnt factor in that trucks suck up voltage like stupid.... my bad. Will keep you updated. Quote Link to comment https://www.bigmacktrucks.com/topic/74419-having-trouble-starting-a-2003-mack-ch/#findComment-556536 Share on other sites More sharing options...
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