fjh
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Everything posted by fjh
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FINALLY! 3 months that is awesome response time !
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Vibration that 2 mechanics and Mack dealer can’t figure out
fjh replied to RobM626's topic in Engine and Transmission
HA you think you got problems now! Good luck with your new acquisition don't get rid of your old one the vibration issue will be a non issue comparatively speaking! IMO! of coase! -
Maybe he couldn't find a willing engineer!
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Before you go to this trouble make sure the fuel stop is going to the fuel on position! and make sure the throttle is going to full fuel on when you step on the pedal!
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After you get the thing back together check to make sure it holds pressure ! If its still s tad lazy after take that little cap off the end and give it a half turn in this will let it have a little more fuel when you first get on the throttle! it will smoke some ! Yup next step will be fuel preasure ya need 20 psi + under load 25 to 30 is best!
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08 Mack CHU613 hard starting
fjh replied to bigdaddyice02's topic in Modern Mack Truck General Discussion
Unfortunatly It is likly injector cup issue! The drain back valve is cheap you could try it! -
Blink code 6-4 no-start CHN613 AC400/Allison.
fjh replied to 96bulldogpower's topic in Engine and Transmission
I’m almost certain this truck has a bad cam or failed lifters. I Think your correct The spring loaded push tubes indicate that the engine is equip with ceramic roller lifters If all the push tubes were bent it indicates in my mind that the engine was over sped at some point In my mind you need to Replace ALL the lifters! This Ain't gona be cheap! -
Hurry up And Wait!
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oooooooya! Gota love it!
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No problem just trying to help! Check out the diaphragm if its broke fix it ! We can work from there I think its on par with your pay grade the hardest part is getting the screws out!
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Check your other post ! I realize your new here but I think most of us read all the forums no need to post in both spots the topic says what your after we will try to help if we can!You have to be willing to listen though! https://www.bigmacktrucks.com/forum/16-modern-mack-truck-general-discussion/
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Is the diaphragm leaking ? did you try what I asked you try first? If so Do this first !!!! get the diaphragm fixed then we will talk! you have to remove the whole top of the govenrer housing as he does in the first vid to increase power! YOU DON'T need to do that !! If the diaphragm is leaking you need to fix that FIRST ! The four screws facing back! the four screws facing down Not Right Now! You don't want to get to aggressive with the stop plate you can Kill the engine with too much fuel! Just saying! You were talking pay grade maybe just fix whats broke for now! JUST SAYIN!
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Does it smell like oil? Could be a trans cooler issue it would be black if it were engine oil fuel is another consideration!
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It Won't be the first time there has been programing issues with this stuff! They run within quite tight perimeters. We did a power upgrade on a truck last year and now the engine brake is weak on the truck we are still chasing this! We did yet another power upgrade on another truck and the truck wouldn't start afterwards they installed the wrong data file at their end ! The customer WAS livid ! Customer had the truck booked for the next day.Of coarse this happened at the end of the day and you can get a hold of anybody in Mack land to get the issue resolved! NOTE TO SELF don't reprogam at the end of the day it may backfire on you,
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take the 4 screws out it will become evident what you have to do the vid above is similar how ever it is not necessary TO take off any more than the 4 screws on the out side edges and the the diphram is held together with a bolt rather than a nut if I remember correctly! the trick is getting the dam tamper proof one out!
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There is a Vague possibility that the turbo can cause this issue if there is little blow by At Idle ! W eve had few turbos over the years let gas by the shaft seal into the base ! Mainly on ETeck Ai and AC engines under hard pull conditions, However there is no reason why this can't happen on the v8 as well !
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Pull some rods and mains and look who knows they may be right!
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Good your still checkin in ! But not good! GOD This is ridiculous Maybe they will tweak the programing and do a download on your truck Hopefully ! Is anybody saying anything?
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Well yet another open ended story
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Simular to yours the idea is the same! it can be done with out total disassembly !
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Remove the 4 screws and replace the diaphragm some have one tamper proof cap you need to work with what have you to get that out! Did you confirm it was bad with the info last post? you can also take the bulbus end off 2 screws and tunn the allen screw right in how ever this will make the thing lay down black soot when you get on the throttle your dot may can your ass for it!
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1996 Mack el 350 no power or smoke
fjh replied to Brooksz's topic in Modern Mack Truck General Discussion
Hi Bud yup to check the ( anroid) take the 3/8 hose off at the manifold end and either suck on it won't hold vacuam or blow thru it if it leaks won't hold vacuam then you need to replace the diaphram the valve is mounted on the top rear of the fuel pump! -
Long as you thoroughly checked the intake plumbing your good to go
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Good job Man happy for ya! Probably won't hurt to torque the studs after a few heat and cool cycles!
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