I think I killed my truck

[DieselBuzz]

Help!

On my way home from work I had it WOT (w/ 4. 10s it's 75mph) and the EGT went to 900 while puking smoke. I slowed down and then got off the hiway. This is when I heard the rapping, the EGT at 600 while barely doing 30. Finally I popped the hood to see that oil was blowing up the dipstick tube. The rap seems to be coming from that side of the engine. The list of normal things: oil pressure(?), coolant temp. There is more vibration at idle and I would say it is running rough. The rest of the engine looks intact.

I am fearing the need for major work. Any opinions out there?



Art

 

[CrewCabDiesel]

Pull the head off, sounds like you cracked/holed a piston and will need some major work, and don't start it until you find the source of the knock ! A tow is much cheaper that a new block and crank. How many RPMs where you at ? The Cummins uses light valve springs and at high RPMs with a tired motor you could have a valve hit the top of a piston, break off and put a hole in it. Sorry, I don't have good news, I hope I am wrong, but don't think so. If you want to run 75mph change gears to 3:54 or add a gear venders OD.

Kyle

 

[DieselBuzz]

Kyle,

I was at 2500 to 2600 rpms for about 1-2 miles The truck has 132k for mileage. I wasn't planning on having it there for the whole trip. I guess I'll never hit the governer again.

Art

 

[Lil' Dog]

Really these engines are designed for 1800 to 2500 rpm full load, so overspeed shouldn't have been a problem. Unfortunately, Crewcab called it, a busted up piston.



Rebuild time.



J-eh

 

[DieselBuzz]

Thanks,

Well, at least I don't have to pull out a 45 and shoot it like the GI had to do with his jeep. Just have to find a good medic.

Ball park figure for a rebuild $3-5000? Depending on the severity and the amount of work needed.

Art

 

[BushWakr - RIP]

You may have collapsed a couple rings. This will allow cylinder pressure to blow straight through into the cankcase and pressurize it, causing oil expulsion. (Had exactly the same thing happen on my brothers Toyota which was supercharged and darn near emptied the crank of oil before we got stopped. )

Perhaps you'll get by with a cylinder hone/dressing and some new rings !!! Think positive.



Here's hoping... Bob

 

[Lil' Dog]

Bush, now theres a positive spin!!! That sounds just as viable as a blown piston and wouldn't be that bad either. Either way the head comes off and the pan is dropped. Probably not an "inframe" job.



J-eh

 

[DieselBuzz]

I told one of my peers at work about my plight. He said I should sell what's left of the truck and just buy a new one. I didn't bother to try to explain, I knew he would not understand.

I imagine the solution is going to take a while, I will be optimistic and post my progress here.

Thanks for the support,

Art

 

[drives mopars]

ill chip in 10.00

its not much ill chip in 10. 00or so

and if we all do that maybe youll get



a good start on this project

i had to do the trans on mine just at the time



my mother passed away , (well months after)

i took vacation and had my truck in trans shop



thanks mom where ever you are for your



help !!!

 

[DieselBuzz]

Thanks drives mopars,

I would rather have you and everyone else support the people that were harmed on 9-11-01. Granted, both are tragedies, mine is nowhere near the scale of New York. I probably should not even compare them at all. I'll take care of my little blip on my own.



Thanks

Art



PS. Sorry about your mom.

 

[BushWakr - RIP]

We managed to do the repair on my brother's Toyota "in frame".

I don't know if the cyl. walls on these things need a particular grit, pattern, depth of hone but it will be alot better'n having to pull the block.

He broke the compression ring and one oil ring on his number 4 cylinder. It was mind blowing to lift the hood, start the motor and then have to walk 20 feet to go get the dipstick after it shot out onto the highway due to the pressure. Blasted thing nearly took my nose off. To make matters worse we were on our hunting trip. Good thing I was in the Dodge and we just loaded everything into my truck including trailer w/ATV and carried on.

Let us know how you make out.



Ps, Amsoil tastes real crappy, and its a booger to wipe off.



Regards, Bob

 

[DieselBuzz]

Wow!

Bushw. I'm glad your nose isn't any bigger, three nostrals anyone?

I will be bringing my truck to a local shop for two reasons. One, I have never done work this major before and feel that it's beyond my abilities. Second, eventhough I like the sound of taking a vacation to rebuild my truck, my other responsiblities have to be answered first. I'm planning on having it looked at on Monday.

I had almost forgotten how much driving a regular car really sucks. "... . and then they pull me back in. "



Art

 

[AWM]

just a thought,I wonder if this is what happens when a piston cooling jet becomes cloged? (ie. fram filter),no cooling, burnt piston with normal egts

 

[Roger rodbolt]

Weak Oil Filters

just a thought,I wonder if this is what happens when a piston cooling jet becomes cloged? (ie. fram

filter),no cooling, burnt piston with normal egts

AWM,

Plugged cooling nozzles cause the cylinder walls to be scored and then the piston/rings. I saw a number of engine blocks at the Cummins plant in Columbus, Indiana and yes, there are several brands of filters that damage the 1rst Generation Rams.

 

[DieselBuzz]

AWM, Rodger Rodbolt,

Pardon my ignorance but could you explain where what and how a "cooling nozzle/jet" works?

Thanks,

Art

 

[Roger rodbolt]

Originally posted by DieselBuzz

AWM, Rodger Rodbolt,

Pardon my ignorance but could you explain where what and how a "cooling nozzle/jet" works?

Thanks,

Art

Art,

I'll try: to keep the piston pin lubricated and pistons cool, there are pressed in orfice tubes (cooling nozzle) that are fit into a reamed hole in each main bearing saddle of the engine block. These nozzles have the appearance of the end of a fire hose and in the same way, direct a spray of high pressure oil up past the rod and on to the piston pin and under side of the piston head which lubricates the pin and cools the very hot surrounding metals (including piston rings). Our engines have an oil cooler that is built into a cavity in the water jacket of the block so the oil is cooled by antifreeze(don't run your radiator too hot!). Several brand name oil filters (some but not all Fram #'s for Cummins) have a tendency to rupture and the filtering media or media sealing compound finds it way into the oil passages. These cooling nozzles are (I think) the smallest passages in the system and become plugged with the filter debris . Bad stuff. I mention the oil cooler because of the pressure sensing bypassvalve that allows unfiltered oil to bypass the filter if it senses a pressure drop across the filter. (This valve is different from and in addition to the pressure relief valve) Some substandard filters have a very restrictive media which may remove minute particles but rapidly plug up and then get bypassed. Think of a K & N airfilter that doesn't filter well when clean and new but flows great, as it gets older the holes in the cotton gauze plug and when washed the debris further plugs the holes. Now the K & N airfilter

removes more particles but may restrict airflow more than a clean paper filter. Cheap oil filters may be "plugged" when new. But now I digress... . so the moral of the cooling nozzle story is: Stay with proper Fleetguard oil filter, they are inexpensive and engineered specifically for our Cummins. Mopar and Motorcraft 5. 9 diesel filters are made by Fleetguard, however when I worked for Chrysler Corp. , they routinely changed suppliers and the part numbers stayed the same. Geno's Garage has good prices on Fleetguard filter, accepts internet orders and gives great/fast service. I apologize to all for the long post.

 

[Dieselman359]

WOW

Roger rodbolt, so you are the elsuive 491hp truck at Dieselextravangza 2001. I saw your number and kicked myself for missing your run. Maybe you saw mine, the '93 blue and silver dually at 207hp. Sounds like you've got a killer arsonal of Cummins powered Rams!

 

[Roger rodbolt]

Dieselman359,

I did see your dually but missed your dyno run also, nice truck and great numbers with a VE pump. None of the Cummins' animals in my stable are dually's

But one must have something to look forward to . I was busy both days of the Scheid's Extravaganza, on Saturday evening I did my first pull ever(spur of the moment thing) and surprised myself by winning the 7400lbs class with a borrowed hitch receiver (bent down during the pull) and no limited slip on either axle. Made of photocopy of the check just to prove that "BOMBing does Pay!!

 

[Dieselman359]

Money in the Bank!!

Hey Roger rodbolt, glad to hear that you 1) not only won your class in the truck pull, but 2) you didn't join the broken-u-joint club like so many of our other friends did.

Don't feel bad that none of your trucks are duallys, its too hard to buy, or rotate 6 big, heavy tires.

Chris Hughes

 

[Dieselman359]

Gearvendors

How do you like it?, I'm thinkin' 'bout putting one behind my Getrag. TIA