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GEN1 6G72 Fuel Pressure #1104900
03/07/19 10:03 PM
03/07/19 10:03 PM
C
chadzeilenga  Offline OP
Getting the Wheeling Fever
Joined: Apr 2018
Posts: 72
Charlotte, NC USA
Hi All,
I have a GEN1 that I'm trying to sort out after engine replacement. I have a question regarding checking fuel pressure. I have my fuel pressure gage installed on the fuel filter inlet banjo fitting.

With everything connected I get ~42-44psi on (2) different Fuel Pressure Regulators. FSM states this should be 38psi.
When I disconnect the vacuum line to the FPR I get 53psi, which is within specification of the FSM.

I'm confused about the 38psi from the FSM. Is this a MAX limit? Would only 4psi above that cause issues?


Chad Zeilenga
1989 Gen 1 Montero
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Re: GEN1 6G72 Fuel Pressure [Re: chadzeilenga] #1104903
03/09/19 11:15 PM
03/09/19 11:15 PM
rxinhed  Offline
Trail Leader
Joined: Feb 2005
Posts: 7,212
Montero Ranch *****
Is there another port along the fuel rails on the engine? Has been a long time since I looked.


1988 Mighty Max turbo 2.6 service body
1980 Power Wagon W400
Sundry Mitsubishi Montero Gen 1 parts, Gen 1 and Gen 2 Max parts
Parts vehicles: 89 LS Montero 4-door, 2002 Sport AWD
For Sale: #277 Montero
Re: GEN1 6G72 Fuel Pressure [Re: chadzeilenga] #1104906
03/10/19 02:34 AM
03/10/19 02:34 AM
C
chadzeilenga  Offline OP
Getting the Wheeling Fever
Joined: Apr 2018
Posts: 72
Charlotte, NC USA
Hi Rx,
Not that I can tell. Just the connections from flex line to rail and FPR. Looks like there is a special adapter in FSM to measure at the rail.


Chad Zeilenga
1989 Gen 1 Montero
Re: GEN1 6G72 Fuel Pressure [Re: chadzeilenga] #1104914
03/16/19 10:07 PM
03/16/19 10:07 PM
MarkG  Offline
Body Damage is Cool
Joined: Feb 2001
Posts: 2,318
Scaly Mountain, NC, USA *****
I used to have the adapter hose. I can look next week. It replaces the high pressure line from the firewall to the engine. It has an inline T with a schrader valve to check the pressure. Someone could make one themselves by splicing in a T and a schrader valve.


Mitsu # 6 - 98 6G72 Montero Sport, R D Lock, 31x10.5

Mitsu # 7 - 02 6G74 Montero Limited

Moderated by  Macka, Mudraider, off-roader, PajEvo, rxinhed 

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