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Dan, Technician
Category: Industrial Equipment
Satisfied Customers: 5182
Experience:  17+ yrs. shop and field experience with all major brands of heavy equipment and trucks - 1995 WyoTech graduate.
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I have a JLG 450A Series II duel fuel (propane and gas) that

Customer Question

I have a JLG 450A Series II duel fuel (propane and gas) that would run for a while and stall. It would start right up, run a bit then stall. I was going up a fairly steep driveway and it finally stalled and would not start. It will crank over but not fire. Any suggestions?
Submitted: 1 year ago.
Category: Industrial Equipment
Expert:  Dan replied 1 year ago.

Hi David, My name is***** is the serial number of your lift?

Customer: replied 1 year ago.
The serial # *****(###) ###-####
Expert:  Dan replied 1 year ago.

Thanks for the info. First lets start with the basics.... Check for spark while cranking over.... If ok we need to confirm fuel and air.... Check if it is getting gas to the throttle body/carb. Let me know.... I will pull up the manual for your serial number as well in the meantime

Customer: replied 1 year ago.
The machine is getting fuel butnot getting spark, It is brutally cold out, so i didnt spend alot of time checking but sprayed a bit of ether into the air intake and it did not even try to fire. Right now it is sitting on a steep hill, is it possible that the low oil pressure sensor went bad? Just throwing that out there.
Expert:  Dan replied 1 year ago.

Hi David. It is a possibility that the angle it is sitting on is creating a problem with a sensor or a possible faulty sensor itself. Click on this link for your troubleshooting info and test procedures.


Expert:  Dan replied 1 year ago.

Also, Here is the operation manual. Let me know if you have more questions


Expert:  Dan replied 1 year ago.

Hi, did you get this resolved?

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