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Discussion Starter · #1 ·
Hi. I recently installed the FASS system on my truck. I have no faith in the VP44. I am very pleased with the system. My only concern is that after the install the truck takes longer to turn over. It might not necessarily be anything bad, but I'm not going to just let it slip by and end up costing me money. With the stock pump it took about a half second to a second of crank time. Now, it fluctuates rediculously. Sometimes it will only take a second, others upwards of four to five seconds. It has me concerned that it may be sucking air, and in turn slowly ruining my injection pump. My brother who is a mechanic said that it may be the check valve but he is not sure. He also said it may be losing pressure while not running. Any help greatly appreciated, thanks in advance.
 

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I'm intested too, I'm looking for a fass, or raptor or airdog, something!!! and am trying to learn about em.
 

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Try leaving your key on for a few seconds then crank. Let it get primed up. Thats what I do on my ford w/ a fass.
X2.

Just a few second pause should be all you need from key on to Start.

I noticed it with my dual Walbro setup there was a little longer start time if I tried to start the truck as soon as I put the key in the ignition.

Turn the key on, count to 2, start the truck. See if that stabilizes your problem,(Makes it easier to start, or at least makes the time to start it consistent). If it does, no worries. If it doesn't, I'd definitely look into it further.
 

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Discussion Starter · #6 ·
I always wait for the wait to start light to go off. So I wait a few seconds anyways. I was told to try cycling it a few times incase it was losing prime. It was better today, but all the times I started it, it was dead cold. And it took two seconds or less each time. So I'm not sure if its the check valve, or losing prime or what. But today was good as far as starting. I'm hoping it is/was just a break in thing.

Burgundy, I have no complaints about the FASS other than the crank time, which may not be an issue at all, like I said. Its a great system so far. haven't put on any heavy loads to see how it works under load. But so far its great. And another friend of mine has it and couldn't be happier.

And thanks to everyone else for the help.
 
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