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Topic: Takes Three Cranks to Start (Read 1041 times) previous topic - next topic

Re: Takes Three Cranks to Start

Reply #25 –
Quote from: StevenOrlando –
Where is the "fuel return valve and bad O rings in the priming pump" ?

Furthermore, where is the fuel check valve(s) ? 

My 1997 U320 does not have a priming pump -- only the main gear driven fuel pump on the engine at the rear passenger side.

I did not do the check valve replacement myself, but by the description MoT gave me, it's behind the cooling plate for the engine computer at the fuel inlet from the tank.
Rick and Donna
1997 U320 4000 WTBI Build 5152 "Molesley"

Re: Takes Three Cranks to Start

Reply #26 –
Hey Rick
Install a Fast Fuel system all these issues will go away.
James and Suzi
1999 U320  36, Cummins M11
Build 5544  Motorcade #17268
Ronan, Montana
2020 Jeep gladiator

Re: Takes Three Cranks to Start

Reply #27 –
Quote from: StevenOrlando –
I've been struggling with a similar air leak problem in my 1997 Foretravel U320.

I have no visible fuel leak but have low fuel psi until the starter cranks for 30 seconds.

After "key hot", I must push the 'air purge' button at the rear of my coach and let it run for 20 seconds. Then it starts quickly.

Where is the "fuel return valve and bad O rings in the priming pump" ?

Furthermore, where is the fuel check valve(s) ? 

Thanks,

Steven

Steve. The fuel leaks we are talking about are air leaks into the fuel system. Little tiny air leak from lines or the factory Winn system will cause hard starts. The Winn systems are no longer supported. I had prior changed my fuel lines and recently converted to the 165IND FASS system. Other than the mount for the 2001 it's an easy install. The very first thing I noted was how quickly it started. It is a self priming continuous running pump. I used the ECM supplied power to a Bosch relay for the control. Have about 4K miles on it with great starts. I did like the water automatic drain of the Winn. I plan to add an external pressure indication to monitor fuel pressure for plugged fuel filters. Very pleased with it. I do have one concern, adding the FASS system without addressing the fuel line leaks may cause it to work excessively. May work fine too?