Adding a mechanical fuel pump?
Thread Starter
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Cross-Country
Joined: Aug 2004
Posts: 58
Likes: 0
From: Paisley, OR
Adding a mechanical fuel pump?
My 89 7.3 acts as though I need to replace the fuel return lines. It starts, runs for about 3 seconds and dies. After cranking for 30 to 45 seconds, it will start. This happens after the truck sets overnight. The local mechanic, does not know much about diesels, said that a local rancher had the same problem, and he added a mechical fuel pump. This corrected the return fuel problem his was having.
I looked at replacing the return fuel lines, and I was confussed as to all and which lines I must replace. I searched here for instructions, but I did not find much help. I went to Auto Zone, thinking that I could buy a kit and was told that I just needed to buy the hose and clamps I needed and make the kit. I thought a kit would help me find the hose I would need to replace.
So - add a mechical fuel pump or take it to a diesel mechanic and let him replace the fuel return lines?
Thanks in advance.
I looked at replacing the return fuel lines, and I was confussed as to all and which lines I must replace. I searched here for instructions, but I did not find much help. I went to Auto Zone, thinking that I could buy a kit and was told that I just needed to buy the hose and clamps I needed and make the kit. I thought a kit would help me find the hose I would need to replace.
So - add a mechical fuel pump or take it to a diesel mechanic and let him replace the fuel return lines?
Thanks in advance.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 16
From: Nutter Fort, WV
What the problem probably is is the retun lines between the injectors and the O rings under the return caps on the injectors.
www.mwfi.com has IDI return line kits that have the O rings, return tees, clamps and fuel line for under 40 dollars.
It is not hard to do, it just takes a bit of time to do it.
www.mwfi.com has IDI return line kits that have the O rings, return tees, clamps and fuel line for under 40 dollars.
It is not hard to do, it just takes a bit of time to do it.
Elder User
Joined: Jan 2007
Posts: 620
Likes: 0
From: Langley, BC, Canada
i just did my return lines and it was one of the easiest things to do...took me about 30 minutes. i think it took me longer to change my glowplugs haha.
you can buy a kit....it comes with a good length of hose. copper washers for under the injectors, orings for the injectors, plastic tees for ontop of the injectors and hose clamps.
i bought my kit from NAPA for 80$ CDN. i could have got it for much less off ebay but i needed it ASAP.
http://cgi.ebay.ca/6-9-6-9L-7-3-7-3L-Ford-injector-return-line-kit_W0QQitemZ260186752589QQihZ016QQcategoryZ33555Q QssPageNameZWDVWQQrdZ1QQcmdZViewItem
EDIT- You beat me too it Dave...i guess i type too slow!
you can buy a kit....it comes with a good length of hose. copper washers for under the injectors, orings for the injectors, plastic tees for ontop of the injectors and hose clamps.
i bought my kit from NAPA for 80$ CDN. i could have got it for much less off ebay but i needed it ASAP.
http://cgi.ebay.ca/6-9-6-9L-7-3-7-3L-Ford-injector-return-line-kit_W0QQitemZ260186752589QQihZ016QQcategoryZ33555Q QssPageNameZWDVWQQrdZ1QQcmdZViewItem
EDIT- You beat me too it Dave...i guess i type too slow!
Post Fiend
Joined: Nov 2004
Posts: 5,638
Likes: 1
From: Manitoba
1957F100 never paid over $54 cdn next time try a Stanadyne diesel shop or IH.
VALLEY FUEL INJECTION LTD. ABBOTSFORD BC Service Dealer X
C.R. DIESEL AND TURBO CAMPBELL RIVER BC Service Dealer
KOOTENAY FUEL INJECTION INC. CRANBROOK BC Service Dealer X
NORTHERN DIESEL SERVICES, LTD. DAWSON CREEK BC Service Dealer X
KAMLOOPS FUEL INJECTION LTD. KAMLOOPS BC Service Dealer
THOMPSON VALLEY DIESEL INJECTION KAMLOOPS BC Service Dealer
DYNAMIC FUEL INJECTION & TURBO LTD. LANGLEY BC Service Dealer
ACTION FUEL INJECTION NANAIMO BC Service Dealer
NECHAKO DIESEL FUEL INJECTION LTD. PRINCE GEORGE BC Service Dealer
FRED-HOLMES FUEL INJECTION PRINCE GEORGE BC Service Dealer
FRED-HOLMES FUEL INJECTION RICHMOND BC Service Dealer
N.W. FUEL INJECTION SERVICE, LTD. SURREY BC Service Dealer X
OKANAGAN DIESEL INJECTION VERNON BC Service Dealer X
VALLEY FUEL INJECTION LTD. ABBOTSFORD BC Service Dealer X
C.R. DIESEL AND TURBO CAMPBELL RIVER BC Service Dealer
KOOTENAY FUEL INJECTION INC. CRANBROOK BC Service Dealer X
NORTHERN DIESEL SERVICES, LTD. DAWSON CREEK BC Service Dealer X
KAMLOOPS FUEL INJECTION LTD. KAMLOOPS BC Service Dealer
THOMPSON VALLEY DIESEL INJECTION KAMLOOPS BC Service Dealer
DYNAMIC FUEL INJECTION & TURBO LTD. LANGLEY BC Service Dealer
ACTION FUEL INJECTION NANAIMO BC Service Dealer
NECHAKO DIESEL FUEL INJECTION LTD. PRINCE GEORGE BC Service Dealer
FRED-HOLMES FUEL INJECTION PRINCE GEORGE BC Service Dealer
FRED-HOLMES FUEL INJECTION RICHMOND BC Service Dealer
N.W. FUEL INJECTION SERVICE, LTD. SURREY BC Service Dealer X
OKANAGAN DIESEL INJECTION VERNON BC Service Dealer X
Thread Starter
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Cross-Country
Joined: Aug 2004
Posts: 58
Likes: 0
From: Paisley, OR
Thanks to everyone for your help. It all makes since now. I was looking to replace lines from the injector pump back to the tank, plus the line between the injectors. Thanks Dave, I knew you could help me out. And thanks to 1957F100 for the Ebay link, I just ordered my kit. Now if I can do it.
Postmaster
Joined: Oct 2005
Posts: 3,724
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From: Clarksburg WV
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Lead Driver
Joined: Nov 2003
Posts: 6,900
Likes: 3
From: Campbell River, B.C.
Originally Posted by ghunt
It already has a mechanical pump anyway 
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Elder User
Joined: Jan 2007
Posts: 620
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From: Langley, BC, Canada
Originally Posted by dnroberts
I just ordered my kit. Now if I can do it.
1. unscrew metal line going to injector. slightly pull it away just enough to get the platic tee off. do not bend the lines.
2. remove plastic tee and old o ring
when i did mine i loosened all 4 metal lines on one side of the engine and pulled off all 4 plastic tees at once when they were still attached by the hose. i then used that to cut the new hose to the proper lengths.
3. replace old o rings with new o rings.
4. replace plastic tees.
5. tighten down metal lines.
6. start the truck. any air in the lines is going to be worked out once started so it might idle alittle funny at first.
be sure to check for leaks after the truck has been driven for awhile.
