Cummins ISB Engine Crank No Start - Diagnosis & Repair Part 1 - School Bus Cranks but doesn't start

[@ivanpeterzell695]

I enjoy these buses from the summer.

[@KITS_Auto_and_Truck_Repair]

@ivanpeterzell695 They are pretty nice!

[@hussam-mq2fe]

Wheel loader hitachi engine Cummins QSB6.7 CM2350
Machine kranking but engine Not starting
Ecu ,injectors, engine harness, feul rail line ,all change and diagnostic by inline 7 no trouble code

[@usfarmcop]

Pro tip you can back fill the air tanks to get rid of the noise a majority of the time

[@KITS_Auto_and_Truck_Repair]

@usfarmcop Oh Yeah!! Thanks for sharing!

[@JohnSmith-wb6kq]

Would it have not been easier to connect the wiring harness to the suspect ECM without removing the known good ECM and see if coms and a start could have been initiated? or were the wires not long enough?

[@KITS_Auto_and_Truck_Repair]

@JohnSmith-wb6kq The wires were not long enough!

[@donaldsterling9305]

I've got a question about a 7.3 I've narrowed it down to either the PCM or the HPOP how do I test the HPOP

[@KITS_Auto_and_Truck_Repair]

@donaldsterling9305 remove the ICP Sensor and use a pressure gauge in the sensor hole to check injection actuation oil pressure while cranking, it should be between 700 - 900 PSI while cranking!

[@adamissah452]

Bro I wish I can be your apprentice, and I need diagnostic scan tool for heavy truck please which one is good for heavy duty trucks and commercial car

[@KITS_Auto_and_Truck_Repair]

@adamissah452 • if you work on heavy duty trucks a diesel laptop would be what I would recommend!

[@martinarrieta248]

Grasias

[@KITS_Auto_and_Truck_Repair]

@martinarrieta248 My Pleasure!

[@hussam-mq2fe]

Cummins QSB6.7 CM2350 kranking but engine not working i change all injectors and hi feul pump and rail pressure line with 3 sensor... and enngin ecu and diagnostic not have errorscode ..??

[@KITS_Auto_and_Truck_Repair]

@hussam-mq2fe Did you check compression?

[@hussam-mq2fe]

@@KITS_Auto_and_Truck_Repair how to check compression

[@hussam-mq2fe]

I test by inline 7 diagnostic tool no trouble code

[@hussam-mq2fe]

Why the injectors signal not found in test 2 pin injector there is no postive no plamping by test light

[@MikeJakson-y5w]

Can you give me the power and ground at the computer please?

[@MikeJakson-y5w]

Never mind!! Thanks for your help

[@KITS_Auto_and_Truck_Repair]

@MikeJakson-y5w You can get them from mitchell prodemand

[@KITS_Auto_and_Truck_Repair]

@MikeJakson-y5w Ah ok!

[@SoldfMC]

Feedback - dont make a video with an ear piercing alarm noise.

[@KITS_Auto_and_Truck_Repair]

@SoldfMC Sorry for that noise, the buzzer was hard to get to and we couldn't find the fuse for it! I hope it wasn't too bad!