High fuel pressure
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- Making Progress
- Posts: 56
- Joined: October 21st, 2016, 2:02 pm
- Vehicle Year: 1994
- Vehicle Make: Jeep
- Vehicle Model: Wrangler
High fuel pressure
In preparation for the stroker I'm building for my '94 YJ (and to perhaps get a couple of horsepower back to a dying engine) I have installed a map adjuster and adjustable fpr. To my surprise the pressure crept up to 60 psi and wouldn't move any lower. My fpr was used on a different efi system recently so I felt that wasn't the problem. I reinstalled stock fpr and still at 60 psi. Next I removed fpr and installed aluminum blank I made to replace fpr, so NO regulator, and STILL 60 psi. I ran out of time to diagnose further, but I think it's safe to say I have a restriction in the return line somewhere. That would probably explain the rich running smell...Haha.
1994 Sahara YJ
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- Making Progress
- Posts: 56
- Joined: October 21st, 2016, 2:02 pm
- Vehicle Year: 1994
- Vehicle Make: Jeep
- Vehicle Model: Wrangler
Re: High fuel pressure
Here's the blank next to the original fpr.
And the new adjustable fpr.
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1994 Sahara YJ
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- Noob
- Posts: 17
- Joined: June 6th, 2013, 2:49 pm
- Stroker Displacement: 4.6
- Vehicle Year: 1994
- Vehicle Make: Jeep
- Vehicle Model: Wrangler
Re: High fuel pressure
Hey, just out of curiosity...did that end up being a constriction in your return line causing this?
thanks,
thanks,
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- Making Progress
- Posts: 56
- Joined: October 21st, 2016, 2:02 pm
- Vehicle Year: 1994
- Vehicle Make: Jeep
- Vehicle Model: Wrangler
Re: High fuel pressure
I haven't dropped the tank yet, but I suspect a hose got pinched. Skid plate is starting to rust so I'll probably do skid upgrade, fuel pump upgrade, and fix restriction.
1994 Sahara YJ
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