fuel pressure problems.
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TECH Fanatic
Joined: Jul 2010
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fuel pressure problems. I'm having problems with my fuel pressure.
I'm having problems making my fuel pressure rise higher than 60psi.
No matter how high I set my base fuel pressure it doesn't seem to help.
Dual walbro 342 intank.
Both running full time.
Magnafuel regulator 1:1
-6 return,3/8 feed, stock fuel rails. 80lb injectors.
I'm having problems making my fuel pressure rise higher than 60psi.
No matter how high I set my base fuel pressure it doesn't seem to help.
Dual walbro 342 intank.
Both running full time.
Magnafuel regulator 1:1
-6 return,3/8 feed, stock fuel rails. 80lb injectors.
Last edited by a4ls2goat; Mar 14, 2013 at 08:51 PM.
If possible see if you can apply 10psi of air pressure to the boost connection on the FPR while the car is idling. Those pumps probably are bypassing around 65psi so you'll never be able to get above that if that's the case.
Andy
Andy
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Staging Lane
Joined: Sep 2005
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I have dual walboros on my gto. One pump is on all the time and the second is on a hobbs switch to come on under boost. I believe the gtos have an in tank regulator that constantly tries to maintain factory ~58 psi which might be your problem. I set the regulator on my secondary pump to 60psi, enough to add fuel when needed but not too much to make the factory regulator wacky.
On The Tree
Joined: Mar 2012
Posts: 194
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What fuel pressure gauge do you have?
I had a prosport evo fuel pressure gauge with a sender that looks like your sender. Gauge and sender was crap and read the same fuel pressure all the time even under boost. Got me a aem one now and all is good.
I had a prosport evo fuel pressure gauge with a sender that looks like your sender. Gauge and sender was crap and read the same fuel pressure all the time even under boost. Got me a aem one now and all is good.
So you have filters on the pumps then an after filter? Take that wix off of their. 3/8" what size is that comparable too in -AN? I ran two walbro gss340s in tank, -8 feed and stock line as return, i had zero problem at 15lbs of boost 78mm turbo on a 6.0.
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3/8' is the stock feed, i believe is a -6.
Thread Starter
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the regulator is referenced at the back of the intake mani, i have it T on it.
ill remove the second filter and see what it does.
you have the line coming FROM the tank (supply) going into an inlet of the regulator. Im pretty sure they dont work that way. Atleast ive never seen one hooked up like that.
The people that ive seen that put a regulator on the rails hook it up to the -4an port on the end of the rail. regulating the rail.
The people that ive seen that put a regulator on the rails hook it up to the -4an port on the end of the rail. regulating the rail.