Medium and Heavy Trucks
Have Truck Repair Questions? Ask an Expert
If the oil pressure is too low it will throw a check engine light. at 10 psi pr lower. You should put a manual gauge on the oil pressure rifel on the engine and cgeck the manual gauge VS the dash gauge. it could be a bad sensor giving you low readings. If the manual gauge is reading the same as everything else suspect a pressure issue. Such as the oil pump, a leaking cooling nozzle, a failed or stuck regulator ect.
Well when the oil is hot it thins out and lowers the PSI. Normally when you buy a used unit you have the seller take it to Cummins and perform a wellness check on it. There they will run it on a dyno and take all the needed readings and fill out a report and you the buyer can make a sound decision on that report and other documents the seller has. .Oil Pressure Looks low to me at 1500 and only 25 psi. check it at 1200 as i sent the spec over in th pic. That will give you a better idea also check at idle
so they stated that they overhauled the engine? and the heads/pistons were not replaced?
I would walk away. first off a Overhaul consists of liners,pistons, bearings , heads and injectors. It is not normal to replace the oil pump just because. Unless like I said you have the seller take it to Cummins and perform a health and wellness check on the engine while running under a load. They will check for blow by, boost pressure,oil pressures,HP output. and many other items and checks and you can get a good idea what is going on. Also have an oil sample pulled and tested to check for other potential issues within the engine. Hope this helps. Please don't forget to rate my service
It depends on yourlocal company pricing. we charge 350 for the test with full report
As a technician's view it's a piece of junk not properly fixing the engine with new parts. and using old unknown used parts. And who knows how long you have until something fails, than who will stand up and take responsibility and help pay for the repair... At east with brand new parts from Cummins you have a warranty if something was to happen. but not with mix matched new/used parts. Hope this helped. Please don't forget to rate my service.
Hi just following up. Please don't forget to rate my service..
Please don't forget to rate my service.