ISX 15 NOISY INJECTION PUMP

[@1waukesha]

Currently have a truck down because the ceramic plungers shattered. The plungers are missing probably half of their length and none of it is in the tappet bore. So close to 2” of plunger was pulverized and made it past the followers into the pump case then into the engine and eventually into the oil system. Cranks scored badly and everything is gritty. All bad news. I would LOVE to hear you explain why the plungers shatter and HOW the heck it gets the contaminated oil past the engine oil filter?? Why doesn’t the oil filter protect the engine. Its a point that baffles me. Thanks for your videos

[@ENGINESHOPJOE]

Cummins had an update to the oil bypass valve in the oil cooler head. Does this engine have that bypass campaign done? look for white paint on the oil cooler bypass plug that was the sign it was done. Pull the bypass out and it should look like a steel sleeve, not a plastic plug at the end of the spring. The old bypass MOMENTARILY opened EVERY TIME the engine was started letting a SMALL amount of unfiltered oil into the engines filtered oil. Next the tappet particles went past the tappets and into the oil sump in the pump and then drained into the gear train. When the now obsolete ceramic plungers would fail usually 1 would fail and the engine would run on the other until it failed or 559's drove diagnostics. Usually they failed because of the tappet chattering. That happened due to extended oil changes and or injection pump cam lobe failure causing the tappet chatter. By the time someone finds the plungers failed the engine is usually gone due to damage to all lubed parts. Cummins CAMAPIGNED every engine that had ceramic plungers but apparently this one was never taken in for the work. That was 10 years ago now. They also campaigned the old style tappets in the pumps again 10 year old campaign. Cummins would tell you to replace the engine or completely tear it apart as those ceramic pieces are EVERYWHERE in that engine. Like termites in lumber.

[@michaeldeslondejr5633]

I have an ISC 8.3 with a cricket noise at the oil fill tube when running. It goes away if I pour oil in. Could it be my fuel pump?

[@ENGINESHOPJOE]

A Chirping noise can be from a number of sources.

[@thomas5223]

how many hours do they get out of these units

[@ENGINESHOPJOE]

If you do good fuel filter filling practice and change your oil when you should I have seen the fuel pumps run 800K thus far. Good maintenance is all you can do to prolong the life. See my video on how to prefill a fuel filter. ( the one on the engine). The other thing is Cummins always does failure analysis on new systems. They stop when all the problems are engineered out. So anything after say 2018 I would expect a million miles of life. Don't forget when the engine is idling all night that counts too. Take engine run. hours times 50 to get the approximate miles. Off road engines only track hours but on road track hours and miles.

[@ernestobalderas8127]

Wen the truck climbs and down shift it makes noise like it ratling but wen it's level no noise... So do you think it's fuel pump.. Please give me your address and phone number

[@ENGINESHOPJOE]

If you don't have fault codes and it runs ok I don't think it is the fuel pump. I don't have a shop I work for a company.

[@devinlewis3509]

So when its on its last leg on a 870 will it cause u to have low power when climing hills i always get passed

[@ernestobalderas8127]

Yes I do lose power it sucks because I don't get code

[@ENGINESHOPJOE]

Does it start to smoke more black when you lose power or does black smoke come and go? Rattling could be a problem with a timing actuator if this is an 870 or 871.This is difficult to diagnose with out hearing it or doing some diagnostic tests@@ernestobalderas8127