Got my RB running (only took 2 years) and 1 birrion dorrars

Discuss the RB20, RB25 and RB26 series engines.
gawdzilla
Posts: 2028
Joined: Sat Sep 18, 2004 11:51 am
Car: none

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rotorimp wrote:I must be missing something!!!! I keep reading that the fuel pressure should be around 35 psi w/ vac at idle and around 42 w/ vac off. Is this right??????????????

I can't get it to run right above 20psi--sound low??? It doesn't run lean. ever!! even under load. Infact at 20psi it runs AWSOME. I have walbro pump stock injectors and Saard FPR. In fact 10-15psi will also run fine???
that's corect. about 37ish on vacuum and 43.5 psi w/ vac off. your pressure numbers are way off. try adjusting the regulator. also check for leaks. also is your gauge accurate?


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rotorimp
Posts: 825
Joined: Fri Jul 21, 2006 9:07 am
Car: 02 Xterra, 60 IH Metro
Location: AZ

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Here is the deal I have had three different gages!!!!! According to the gages it likes to run around 15 psi--shouldn't even be running!!! Anything above 20 and it will stall because it starts running too rich. Could it be a volume thing???? I can set it 15 and drive it hard and it never runs lean. I have had THREE gages on it. The firs one wa the one on the FPR, the second was a Autozone gage and the third was a friends Snap-on gage. What am I missing? Sounds and runs really good!!!!! Just can't figure out why it runs at that psi


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