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Cat Dealer
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Re: 627b 15s

figured it out. customers tech had removed the governor housing and did not remove the oil lines to the turbo. the housing came out in a bind, broke the sleeve that attaches to the fuel rail. fuel rail was staying in the off position.

Trusted Contributor

Re: 627b 15s

If it has 20 psi of fuel cranking then that is plenty.  Does it smoke at all?  Did you prime the fuel system.  Adjust the govoner linkage.  On the old ones if it was racked all the way one way that would lock the fuel rack in a no fuel position.  Engine spinning the right way?  should be CCW from viewed at flywheel. 

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Cat Dealer
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627b 15s

have a 3306 eng. the engine comes out of a running machine and has been installed in an older serial number machine. the machine will not start in this machine. troubleshooting the engine and found that the manual calls for a constant bleed valve in the fuel return to the tank.  the engine did not come with the fitting on the pump, customer transfered the fitting from the older engine and it did not have the valve. the service manual says the constant bleed valve should be in the fitting.  have fuel to the injectors and it does pulsate but the psi is not enough to open the injector. could it be because the bleed valve is letting to much fuel go by. has 20 psi from the transfer pump. the bleed valve is supposed to open at 25 - 32 psi. i would have removed the pump by now but the engine was running.