RobM626

I’m in Westchester county. Minutes away from the Bronx . I usually go to spring tech in the Bronx for alignment and suspension stuff. I gotta ask if they do chassis straightening

What kind of place should I bring it to check that out? A body shop or alignment place?

Well I just got my truck back after 2 weeks in the shop and it’s 100 times better than it was. They dropped the oil pan and pulled the bearings to look for any breaks in the crank and found nothing. They did however find a burr on the end of the crank where it meets the fly wheel. The machinist cleaned it up the best he could. They also found the flywheel housing had some runout so they brought it in a little to be within spec. I can instantly tell by listening to and sitting in the truck that it calmed down a lot . That studder that I had when the motor was returning to idle also almost completely went away. I don’t feel the clunking when I press and release the accelerator either. i still have a slight miss in the motor and am gonna pull the valve covers and do a cylinder cut out test to check it out. I haven’t ran the truck with a load yet. That’s where the problems used to really show themselves. But if the truck stays the way it is now I would really be happy. Thanks for all your opinions and ideas guys. Just wanted to give you guys an update

I paid 1343 for my cam 166 x12 for lifter assemblies 206 x6 for eup rollers Plus 2000 labor

It makes sense. Gonna ask them to start measuring

I think the abnormal clutch wear was from the flywheel being cut wrong so the clutch’s were never seating right.

I have a lot of stuff to check. I wish I had a real E-Tech guy that can go thru this stuff with me. The last guy that put the injectors in thinks my crank is bent and that’s what’s throwing my timing off. There’s so much weird shit going on with this truck it’s drivig me crazy.

First I heard that. Thanks for the tip. my old mechanic told me I think it was CAT, that they don’t recognize blow by

Yea that the bulletin I saw too... I still think I should’ve put a vibratech. The Mack damper costed me over 1000$ . And their 19$ bolts

I was told the injectors were pop tested when the eup were changed but they could have lied and the injector lines were not changed . I was also told they put the cal codes in but that could have been bs too BC I know they didn’t bring the truck to the dealer. I’m gonna check all that stuff out once I get it back. The guy that has it now is taking forever. It’s a week already

The EUP’s are cam driven by rollers and there is a cam position sensor on the front of the motor and crank position sensor on the fly wheel housing. I changed both sensors. No change. I changed all 6 eup’s. The cam and the rollers. There is definately a misfire going on and it sounds like the cylinders are not firing balanced

The link isn’t working. There was a service bulletin a while back that changed the size of the vibration damper for E-Tech engines the old damper was a couple inches smaller and had 6 bolts. When I went to Mack and gave them my vin number they gave me the new larger damper and it has more bolts but they said I can use 6 because I’m not changing the hub. I asked numerous times if it was right they said yes. I should’ve put a vibratech. I think it may have even been cheaper and they’re supposed to be really good

It’s more than I have. I have a light steam out of my oil fill tube and my crankcase breather vent is more of a steady steam. You gotta hook up a manometer to the crankcase breather vent and run it at full load and see if it’s within spec. Look under the power steering pump, there will be an 1.5” or so tube running down and you will see some steam coming from there too. I’m going off of my experience.im sure the other guys on here will chime in. These guys are like genius’s when it comes to trucks, especially Mack’s

I have an EUP motor (6 individual electronics unit pumps) . There still is the possibility the cam gear is not times perfectly. A lot of my symptoms do point to that. As far as the lines go. I had the cam dialed about 9 months ago and the lines were in spec but the cam had scratches scuffs on it. After I did the cam the truck ran differently. I thought it was going to run better but doesn’t. After I get the truck back from dropping the tranny I’m going to pop the valve covers and do some checks . Or leave the truck in the south Bronx somewhere with the windows open and keys inside with a sign saying “take me I’ll be glad to be your problem”

Everyone is tapped out lol. When the mechanics see me come in with the truck after I get it back they start running like I’m the plague

1. Yes it’s there when in neutral and stationary 2. I’m gonna have them try that this week. I’m having them drop the tranny and put on dump to test it. 3. Yes it changes it’s not as bad 4. I will have them check out the diffs this week ... all of my shafts were recently serviced and balanced with no real change to my issue. 5. I’m going to have the alignment checked as well. Thanks for your input

I didn’t personally see It BC I was working the whole day but they told me they couldn’t find any breaks but there was some bearing wear. Do u think I should put a new set of bearings in?

Lol

Pulled the oil pan today... nothing that popped out to show breakage or wear... gonna pull some caps tomorrow and check the journals....idk we’ll see what happens.

Yea I use air first to blow as much as I can out so the water doesn’t make it like concrete. The best way to do it I found to be taking off intercooler so you can clean everything nice without damaging the fins

It’s probably the simplest possibility but try blowing out the fins and hosing it with water after. They rad could be plugged.That happened to a few of our trucks and they ran 20-30 degrees cooler after

Yea I gotta start praying. Thanks . It’s a real pain to work on that motor

hey guys . Caught an oil leak from the recent truck 2008 GU with a mp7.and it looks like it’s coming from a hose/oil cooler on the passenger side going to back of engine. It’s a real pain in the ass to get to. Mechanic is telling me it’s prob a 2-3 day job. Does that sound accurate?

Yea ... Renault renault was involved with Mack since the 80’s till 2000-2001