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Old 07-21-2021, 07:01 PM   #15
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Being its rebuilt, I would check the fuel pump for timing and pressure tweaks from factory specs.
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Old 07-21-2021, 07:10 PM   #16
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Quote:
Originally Posted by 98fleetwood View Post
I had everything pressure washed.
Ensure the fins are not flattened from the PW, restricting thru-flow. They're great tools but can be dangerous to fragile bits
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Old 07-21-2021, 07:46 PM   #17
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Being its rebuilt, I would check the fuel pump for timing and pressure tweaks from factory specs.
New injection and lift pumps.. lift pump pressure stays around 15 psi...
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Old 07-23-2021, 07:51 PM   #18
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New injection and lift pumps.. lift pump pressure stays around 15 psi...
Whats your boost? Low boost will cause high EGT's. Clogged filter, leakes from turbo thru intercooler boots etc
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Old 07-26-2021, 07:56 AM   #19
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Whats your boost? Low boost will cause high EGT's. Clogged filter, leakes from turbo thru intercooler boots etc
Thx I will check this out..
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Old 07-26-2021, 08:05 AM   #20
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Assume you have rechecked coolant level.


When the system is apart and coolant put in, it is difficult to get all the air out. An air bubble can restrict coolant flow and of course if that air bubble "burps" you will show look coolant level.


I know on our old Caterpillar 3116, I had to bleed the air bubble from the thermostat housing by cracking open the coolant line to the air pump.


The next, relatively inexpensive item is to change the thermostat and gasket. It could be bad, even if relatively new.
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Old 07-29-2021, 08:08 AM   #21
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So I have flushed the cooling system.. didn't see much.. except when I flushed the heater loop.. another of sand like stuff came out.. I put a new thermostat in.. I found that my air cleaner was plugged (there is a vacuum gauge hooked to it)... replace that.. I found there was some rubber strips that go around the body of the motorhome to the radiator that were missing.. I installed 2 of the three that came with it when I got it... looking for something to use for the 3rd one... I checked all the intake hoses.. they are fine.. inspected the cooling fins on the radiator and intake.. I can see the fan through all of them.. fan and shroud look perfect... I am hoping I found and fixed my cooling problem.. fingers crossed !!
First over the pass road trip is on Aug 12th.. I will let you know if we found the culprit..
Thx for all your advise!
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