7.5 Onan Generator hard starting cold
I have an 04 Journey with a 7.5 Onan that is hard to start cold. I am suspecting an issue with the glow plug system. When I first start the generator cold, there is no delay, or preheat. It goes to crank mode right away without preheat. Priming seems to have no effect. When the unit finally does start, it runs as it should after clearing out the un-burned fuel. After the gen has run, it starts right up warm. I bought the factory service and parts manuals from Cummins to figure out this issue. I suspect, but am not sure yet, that it has a bad temp sensor from what I have read in the manual. It has sometimes thrown a code 33, which is a high temp issue. Not the case when starting cold, so I believe the code is an error, or ecm is reading that the temp is high when cold and not turning on the glow plug system. Has anyone else out there had this trouble and found it to be a temp sensor at fault? I did buy a new sensor and also a water pump belt to change just because. I am trying to figure out the best way to lower the gen down to remove panels. The service manual says, no matter what panel you want to remove, the top panel has to come off first, is this true? So prep the gen to lower, remove panels, and reinstall gen to do the electrical check? If their is a short cut to this, any advice would be greatly appreciated!
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