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85 K5 Build (What to do this summer...)

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skunked said:
If you do anything I would go in tank.
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I agree with @skunked . It's just too easy to do on your year vehicle. I've run the same frame mounted walboro for a few years now (one year with fitech) and haven't had any problems and it's quiet, but if I could easily adapt a bigger more modern tank on my first gen, I'd be all over it. But with my hitch receiver and crossmember needing to be moved, it just isn't going to happen for me now.
 
ekajkrats said:
I agree with @skunked . It's just too easy to do on your year vehicle. I've run the same frame mounted walboro for a few years now (one year with fitech) and haven't had any problems and it's quiet, but if I could easily adapt a bigger more modern tank on my first gen, I'd be all over it. But with my hitch receiver and crossmember needing to be moved, it just isn't going to happen for me now.
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Yeah it sounds like the more reliable way. I will check out that screen for debris tomorrow
 
Started on sliders and cleaned the screen on the regulator, but still have low fuel pressure

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IMG_0823.JPG
 
Can you get the pressure to increase if you bend a rubber return line a bit (I'm assuming you have a rubber line somewhere on the return)? Just thinking that might show that the pump can put out the pressure needed, but the regulator just isn't regulating it to the desired amount.

Also, what's the pressure like when you remove the vacuum line to it, and just plug the vacuum side of it?
 
ekajkrats said:
Can you get the pressure to increase if you bend a rubber return line a bit (I'm assuming you have a rubber line somewhere on the return)? Just thinking that might show that the pump can put out the pressure needed, but the regulator just isn't regulating it to the desired amount.

Also, what's the pressure like when you remove the vacuum line to it, and just plug the vacuum side of it?
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It puts out 43 psi without vacuum
 
And does the pressure drop from 43 when under load when no vacuum is hooked up to the regulator?

To me it sounds like a clog in the system. One of the fuel filters, or sock if there is one on the pickup. But I know your system is new, so that is kind of baffling.

If you can't drastically increase the pressure by introducing a kink in the return line, that could point to a bad pump as well. The reports I've read about the pumps from fitech cause me to recommend anyone steer clear of them, inline or FCC.
 
ekajkrats said:
And does the pressure drop from 43 when under load when no vacuum is hooked up to the regulator?

To me it sounds like a clog in the system. One of the fuel filters, or sock if there is one on the pickup. But I know your system is new, so that is kind of baffling.

If you can't drastically increase the pressure by introducing a kink in the return line, that could point to a bad pump as well. The reports I've read about the pumps from fitech cause me to recommend anyone steer clear of them, inline or FCC.
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When the vacuum is not connected it stays at 43 the whole time.
 
Sjudy98 said:
When the vacuum is not connected it stays at 43 the whole time.
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Odd that under load the regulator drops pressure more than at idle. You can run it without. Your idle will just run at higher pressure since the vacuum isn't dropping the pressure.

Don't want you to have to get towed again, but maybe you can test without the vacuum hooked and see if there is an improvement.
 
After you get this sorted.

You can mess with Warm Up Fuel to get the backfiring sorted while the engine gets up to running temperature.

If it's through the throttle body you'll probably need to increase fuel, as that can be caused by it being too lean.
 
Damn, I was just trying to be funny, maybe add "wear leathers" to my above post...
 
Got some bushings and got everything welded up now time to paint the passenger side and weld to the frame. These ones way 2-3 times what the last ones did
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Sjudy98 said:
Wish I would have known it was a little tricky making sure those bushings didn't melt
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you can use a piece of all thread and some nuts to keep the tabs aligned during welding. That poly melts pretty easily.
 
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