Hi everyone The following machine has engine starting problem Machine Details: Motor grader Model: 140H Serial S/N prefix. CCA engine model : 3176 Problem: engine cranks , but will not start Checked the following CAT ET ,but still not started. -Did injector solenoid test, all are OK, they have good click sound, - When cranking the rpm reading in cat ET screen is 180 - both primary and secondary sensors are reading 180rpm, I checked them one at a time. - took the injector nozzles to injector testing machine shop, all are fine - fuel pressure has enough pressure - no active codes Can anyone suggest any possible solution? Thanks in advance for your help
check valve on top of the filter housing has caused this problem for me a few times with this engine setup
OK thanks , let me try it
A small squirt of starting fluid would confirm whether or not the engine has enough compression to fire. Are you getting any smoke from the exhaust while cranking the engine.? Is this a hard starting problem that has been getting worse for some time and has now reached the point where the engine will not start, or were there no problems then the engine was shut off one time and after that it would not restart.? Can you connect ET and observe the main screen while the engine is cranking. Look for the "Injection Disabled" message box. Unless that message disappears while cranking the electronics will not activate the fuel injection system.
Thanks for your reply, I checked the check valve on top of the filter housing, it is in good condition. Would you please suggest another?
Thanks for your reply Even by using start aid it couldn't start, but I noticed it has good compression There is no smoke when cranking, but with start aid it has. The engine suddenly shutoff while the machine was working. Connected Cat et and checked on screen injection is not disabled. I switched on and off the user shutdown switch and observed on screen, its operating fine Please looking forward another ideas Thanks
Your best bet is to follow what Nige has to recommend He has helped a lot members on here.
What pressure did you actually measure.? I assume that you were forced to measure it while cranking the engine as you have a no start condition. (All the tests for fuel pressure are with the engine running at High Idle RPM)
OK thanks, even to me he used to help me a lot