Problem with my 89' F250?
I have a 1989 ford f250 with a 7.5L 460 in it and everytime i start it when its warm it makes a weird humming noise under the drivers seat and it goes away when i press the gas pedal. Also, when i start it when its warm it sometimes will not start until the second time or it will start but it will have lots of trouble and then start with the humming noise. What's my problem?
I think thats the model with 2 gas tanks, I would check the fuel pump, i think you have 2 on those ones a low pressure and high pressure. Check your trouble codes, plug a diagnostic tool in, your check engine light might not be working or the problem is not severe enough to throw a code but the scan tool could indicate something.
Yeah humming and hard starting would be fiel pump. Best to get your fuel pressure checked
Your multible tanks include a electric diverter which is located on the frame under your seat could be a drawing issue and you should check there as normally there's an inline fuel filter on each line may be clogged and ready for replacement
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