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Max-junk engine


806 man
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Doing a little maintenance on IH floater. Changing oil/Fuel/air filters. Pull the fuel strainer out bunch of aluminum stuck to it.

Go to order trucks shop guys says yeah that is common, the fuel pump is going bad. Guy says they return fuel back to strainer and is catching all the aluminum pieces. Now need to clean rail out also should remove injectors for a cleaning. Why don’t they return fuel back to tank or at the least to the main filter so this crap can’t get by and contaminate the system. It’s a rhetorical question. 

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The title is right and those engines were JUNK from the beginning.   They could not sell them to customers, so the dealers started running them to show that they were good.   Then you would see the dealers low boy along side the road broke down.   Great marketing..........

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remember the good old days? 237 Mack, 671 Detroit, 290 cummings you can drive one of them across this country  with a hammer and a pair of vise grips

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1 hour ago, Tmtbob said:

The 6.4’s do return to the tank and when that happens you have to clean the whole system

After getting the pump housing removed it would appear the tank line comes into the screen/pump then goes through the final stage filter, The final stage also had a some aluminum in in the bottom, Not much when compared to pump screen  . This engine is a 9 or 10 liter not the small one. There are 2 lines coming from the tank which run up to engine so I assume one is return from rail to tank.

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3 hours ago, m.c.farmerboy said:

ENGINEERS!!!

Inflexible management.  CEO dictated no DEF, we're going to meet emissions with EGR.  When engineering told him testing showed it wasn't going to work, he dug in his heals and said make it work anyway

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1 hour ago, 806 man said:

After getting the pump housing removed it would appear the tank line comes into the screen/pump then goes through the final stage filter, The final stage also had a some aluminum in in the bottom, Not much when compared to pump screen  . This engine is a 9 or 10 liter not the small one. There are 2 lines coming from the tank which run up to engine so I assume one is return from rail to tank.

Hold up here, if its a 9 or 10 its a HEUI engine and there is no "fuel rail"  11's and 13's are common rail

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The one that was ..... warmed up?

 

Does anyone know if you "naked" these engines and delete everything not neeeeeeeded to run run are they okay.  Like bearings and rings cams etc?  I see the newest version the "N" series are unbelievable cheap.  Sub 30k for 100k miles and 2 years old day cabs dealers list them for.  The resale alone is staggering poor for Navistar engined trucks.  Just sad and/or pathetic for millions in research and design and testing they produced such a poor product.  

PACCAR ones okay?  Not many local but same deal.  Resale is low too.....

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9 minutes ago, TroyDairy said:

Does anyone know if you "naked" these engines and delete everything not neeeeeeeded to run run are they okay.

Are you asking about the Navistar Maxxforce class 8 truck engines?  If so, there is no way to make them reliable.  They are utter junk if they have the emission crap on them and they are still junk even if deleted.  Just a junk engine from top to bottom.

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