return lines
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Junior User
Joined: Nov 2010
Posts: 84
Likes: 0
From: simpsonville
return lines
hey guys, can someone put a picture of where the injector lines go to and from on 90 7.3 non turbo. my front drivers side injector hose has a screw in it and a clamp on it. just wondering where its supposed to go to. thanks....happy thanksgiving to all
Senior User
Joined: Sep 2010
Posts: 495
Likes: 0
From: Florida
Sorry here is the legend ,
LEGEND:
1 – Fast Idle Solenoid
2 – Injection Pump
3 – Exhaust Emission Label
4 – Air Inlet
5 – Lifting Eye (3 places)
6 – Engine Wire Harness
7 – CDR Valve
8 – Fuel Return Nipple
9 – Glow Plugs
10 – Injection Nozzles
11 – High Pressure Fuel Injection Lines
12 – Coolant Temperature Sensing Unit
13 – Heater Return
LEGEND:
1 – Fast Idle Solenoid
2 – Injection Pump
3 – Exhaust Emission Label
4 – Air Inlet
5 – Lifting Eye (3 places)
6 – Engine Wire Harness
7 – CDR Valve
8 – Fuel Return Nipple
9 – Glow Plugs
10 – Injection Nozzles
11 – High Pressure Fuel Injection Lines
12 – Coolant Temperature Sensing Unit
13 – Heater Return
Thread Starter
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Junior User
Joined: Nov 2010
Posts: 84
Likes: 0
From: simpsonville
thanks 1988, I cant see exactly. but looks like a line is hooked to the cdr valve, mine dont and dont think it has a place to hook anything to it. i,ll have to look closer at mine again to see. thanks again
Junior User
Joined: Jul 2010
Posts: 54
Likes: 1
From: Jacksonville Florida
I have a 91 7.3, and looks are deceiving, the line you are talking about actually runs under the CDR valve and connects to the rear injector on the passenger side.
Post Fiend
Joined: Nov 2004
Posts: 5,638
Likes: 1
From: Manitoba
my front drivers side injector hose has a screw in it and a clamp on it.
Junior User
Joined: Jul 2010
Posts: 54
Likes: 1
From: Jacksonville Florida
His truck maybe different that mine even though we have the same engine 1 year apart, I do have the steel line down the D-side of the block but there are no ports on the front side for a return line to connect. On the left bank, pass side, return from the fuel filter to front injector then connecting all to the back then crosses over running under the CDR to the steel return line. On the right bank, D-side, connects all four injectors to the steel return line at the rear. there is no connection anywhere for return lines to the IP, or is there the appearance that any are blocked off.
I have noticed many small differences between my engine and others, i.e. the fuel heater pictured on this forum looks nothing like the fuel heater I have, totally different style, yet the connection (where the o-rings are located) at the top of the filter housing is the same. But yes it is a 7.3 IDI/NA even Ford agrees.
I have noticed many small differences between my engine and others, i.e. the fuel heater pictured on this forum looks nothing like the fuel heater I have, totally different style, yet the connection (where the o-rings are located) at the top of the filter housing is the same. But yes it is a 7.3 IDI/NA even Ford agrees.
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Junior User
Joined: Nov 2010
Posts: 84
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From: simpsonville
I cant see nothing blocked off except that first injector hose. someone put a screw and clamped it. thanks for the info.
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Junior User
Joined: Jul 2010
Posts: 54
Likes: 1
From: Jacksonville Florida
If the blocked off line you are referring to is front/driverside, then they put a tee on that injector and had to block it off. On my truck that injectors return line cap only has one hose barb for the return line, if you plan on replacing that one you will need to go to ford to get it. The return line kits i have seen do not have a single outlet, I just replaced all my return lines and had to reuse that cap. Also on the fuel filter and on the steel return line where the rubber hoses connect to the metal hose barbs, I had to use adjustable hose clamps not the ones that came with the return line kit. The hose provided was a little to big and began leaking under pressure at those points, once I used the other hose clamps the leaking stopped.
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