HI everyone. We recently purchased a 2001 motorhome that's based on the F53 with a V10. I noticed that it seems to be hard to start and while it has a strong cranking action, it takes a bit to get it to fire.I checked the fuel pressure and sure enough, with no fuel pressure showing it takes quite a bit of cranking before it even shows 10 lbs. A bit more and it gets to 20 lbs and starts. It stumbles for a second and then smooths out as the pressure gets up to a high of 28 lbs. Rev the motor a bit and it drops to about 24 lbs. I swapped out the fuel filter and there was no change.I disconnected the fuel pressure regulator and instead of the pressure climbing much, it only raised about 1 lbs. I'm thinking I've narrowed it down to the fuel pump but wanted to double check first. Any thoughts or suggestions? Thanks everyone.......John

My V-10 can't wait to start. Never had to crank it for more than a 1/2 second. Yep, something is wrong. I believe the fuel pump in in the gas tank. That could be a job, or maybe add a second external fuel pump.Here is an article on how to install an external fuel pump on the F-53Article

You should check the electrical connections to the pump. The plug could be corroded causing a voltage drop. Just a thought before you drop the tank to change the fuel pump.

Hi, My buddy's dad had a 460" fuel injected motorhome. He would turn on the key, then wait about 4 seconds for pressure to build, then it would crank over in about 1 second. His dad kept turning on the key and starting it like a car, cranking it about 6 seconds before it took off. And ALWAYS asked how do you start it so quickly?Let the switch stay on for that second, and then the fuel pump should have full voltage while building up the pressure, and it should start right away. I agree that the fuel pump is not working right. Probably the bad pump, but like stated above it can be a loose connection, or bad ground. Does the fuel level indicator move around while you are cranking the engine? That could indicate a bad ground wire.. . Good luck!Fred.

Might have a blocked fuel filter, I would check/replace it and see if the problem persists.

Fuel pump. Been there done that after several repair shops said it was this filter or that filter etc etc.Took it to a dealership and in 5 minutes,Ford dealership checked the pressure directly from the fuel pump and it needed to be replaced.Hope you don't have a full tank of gas in it right now if you do have to replace it! :W

New to the V10.. Low fuel pressure | Good Sam Community

40 Replies

2bzy2c
Explorer II
May 18, 2015
Pleas update us when you get it fixed. We all can learn from your experience.
Jrork
Explorer
May 18, 2015
Great idea! I'm still hopeful that the regulator is bad and bypassing the fuel back to the tank. :-)
If not and I have to drop the tank, I will DEFINATELY swap out the gas line to the generator. Thanks again for the tip
wildmanbaker
Explorer
May 18, 2015
John, when/if you drop the tank to replace the fuel pump unit, also replace the rubber fuel line to you generator, as it is 14 years old and probably dried and cracked. If you don't, you may be dropping the tank again to replace in the near future.
Good luck and let us know how it works out.
vjstangelo
Explorer
May 18, 2015
Maybe you can siphon out into a 5 gallon gas container and put the fuel into your daily drivers...
Jrork
Explorer
May 18, 2015
Thanks for the replies guys.

Fuel filter is brand new. No change in pressure from before and after I changed it.

Yah, I'm afraid its the pump too. I have a new regulator coming today and will swap that out as cheap insurance. It could be that the regulator has failed and not allowing it to build pressure.

Unfortunately the tank is full. :-(
rockhillmanor
Explorer II
May 18, 2015
Fuel pump.

Been there done that after several repair shops said it was this filter or that filter etc etc.

Took it to a dealership and in 5 minutes,
Ford dealership checked the pressure directly from the fuel pump and it needed to be replaced.

Hope you don't have a full tank of gas in it right now if you do have to replace it! :W
LVJ58
Explorer
May 18, 2015
Might have a blocked fuel filter, I would check/replace it and see if the problem persists.
Golden_HVAC
Explorer
May 18, 2015
Hi,

My buddy's dad had a 460" fuel injected motorhome. He would turn on the key, then wait about 4 seconds for pressure to build, then it would crank over in about 1 second. His dad kept turning on the key and starting it like a car, cranking it about 6 seconds before it took off. And ALWAYS asked how do you start it so quickly?

Let the switch stay on for that second, and then the fuel pump should have full voltage while building up the pressure, and it should start right away.

I agree that the fuel pump is not working right. Probably the bad pump, but like stated above it can be a loose connection, or bad ground.

Does the fuel level indicator move around while you are cranking the engine? That could indicate a bad ground wire.. .

Good luck!

Fred.
chuckftboy
Explorer
May 18, 2015
You should check the electrical connections to the pump. The plug could be corroded causing a voltage drop. Just a thought before you drop the tank to change the fuel pump.
2bzy2c
Explorer II
May 18, 2015
My V-10 can't wait to start. Never had to crank it for more than a 1/2 second.
Yep, something is wrong.

I believe the fuel pump in in the gas tank. That could be a job, or maybe add a second external fuel pump.

Here is an article on how to install an external fuel pump on the F-53

Article

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New to the V10.. Low fuel pressure

40 Replies

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