3.4 Swaps The 3.4 V6 Toyota engine

Fuel line and fuel return hose question

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Old Apr 6, 2008 | 01:41 PM
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neoworm0's Avatar
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Fuel line and fuel return hose question

Both my High pressure fuel line and my fuel return hose were cut when the engine was removed.

I am planning on using the ORS kit and was wondering if I am going to have to replace these two lines with new ones since they are missing the factory connections.
Thanks. I'm not sure how the 3.4 and the 3.0 lines get connected together in the swap so maybe it's not an issue. Just trying to get as many of the details worked out before I dive into this. Of course I suppose it will be self evident what I need to do once the kit is in my hand but I was looking at the lines today and wondering if that is going to be a problem.
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Old Apr 6, 2008 | 06:12 PM
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This is one way http://www.andrewzook.com/content/view/22/48/1/9/

I went another route and spliced mine together with high pressure couplings. No problems to this point. If I can find out the manufacturer, I'll post it here. Same with the return hose, but it's not high pressure, so it's a bit safer.
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Old Apr 6, 2008 | 06:31 PM
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Thanks. I was looking at that option earlier. I was just thinking since ORS supplies the line in the kit anyway it would be nice to be able to just bolt it on. I guess I'm going to need another line then. Time to hit the pick n pull. For the high pressure line anyway. For the return line I may just splice it like you did.

Man all these little items are starting to add up. This motor wasn't quite as "complete" as I thought it was.
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Old Apr 6, 2008 | 06:46 PM
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They cut the line when they pulled mine. I cut mine to match, then used a coupling and proper hose clamps (NOT heater hose style clamps, they won't hold and you'll probably roast your truck to the ground). Not really a big deal. The return hose can be standard fuel hose.
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Old Apr 6, 2008 | 07:23 PM
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Ya really not interested in roasting my truck. LOL! I'm going to see if I can get a stock uncut line somewhere that won't cost an arm and a leg. Failing that, where did you get the splice and "proper" clamps from?
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Old Apr 6, 2008 | 09:11 PM
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Lordco in Kelowna. My brother works there. I'll have to ask him the brands on them.
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Old Apr 7, 2008 | 07:29 AM
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A stock 3.4 fuel hose will work fine with the conversion - it just needs to be rotated 180* on the fuel rail, so that it points toward the passenger side. The fitting on the end of the hose will thread right on to the fuel supply fitting in the engine bay.

The return hose was just a matter of running a new length of fuel hose from the engine to the return line - simple.
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Old Apr 7, 2008 | 02:55 PM
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Originally Posted by breknraj
A stock 3.4 fuel hose will work fine with the conversion - it just needs to be rotated 180* on the fuel rail, so that it points toward the passenger side. The fitting on the end of the hose will thread right on to the fuel supply fitting in the engine bay.

The return hose was just a matter of running a new length of fuel hose from the engine to the return line - simple.
how hard is it to reach this line once the engine is installed? i know on my 3.0 i ended up pulling off almost everything above it. if there's that much work involved with the 3.4, i'm thinking it would be best for me to install a new one before putting in the engine, rather than reusing the old one.
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Old Apr 7, 2008 | 08:08 PM
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Originally Posted by breknraj
A stock 3.4 fuel hose will work fine with the conversion - it just needs to be rotated 180* on the fuel rail, so that it points toward the passenger side. The fitting on the end of the hose will thread right on to the fuel supply fitting in the engine bay.

The return hose was just a matter of running a new length of fuel hose from the engine to the return line - simple.
Yeah, but his, like mine, were cut when they pulled the engine.
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Old Apr 7, 2008 | 08:09 PM
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Originally Posted by screamer76
how hard is it to reach this line once the engine is installed? i know on my 3.0 i ended up pulling off almost everything above it. if there's that much work involved with the 3.4, i'm thinking it would be best for me to install a new one before putting in the engine, rather than reusing the old one.
I don't recall it being that tough. Like I said, though, make sure all your connections are tight or
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Old Apr 8, 2008 | 01:19 AM
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Originally Posted by screamer76
how hard is it to reach this line once the engine is installed? i know on my 3.0 i ended up pulling off almost everything above it. if there's that much work involved with the 3.4, i'm thinking it would be best for me to install a new one before putting in the engine, rather than reusing the old one.
I had plenty of length using the stock 3.4 line from the engine and threading into the stock hard line from the 3.0.

I have more detail on page 3 if you scroll down a bit:
https://www.yotatech.com/forums/f160...85/index3.html

I realize the OP's OEM lines have been cut, but I think I'd scrounge a salvage yard or two first to see what I could dig up. Mind you, if the yards in your area are anything like ours... finding a 3.4 is going to be next to impossible.
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Old Apr 8, 2008 | 03:00 PM
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Well the local pick n pull will sell me an uncut one for $25. So I'm going to get that. It looks plenty long enough to reach the 3.0 line. thanks guys.
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Old Apr 8, 2008 | 08:35 PM
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Great!

For what it's worth, I had good luck with D&M Recyclers. They're the guys I got my 3.4 from in BC.

http://www.autorecycling.com/

They get e-lockers in from time to time!
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