Diesel fuel bleed pump

Submitted: Monday, Sep 27, 2004 at 09:01
ThreadID: 16580 Views:2564 Replies:4 FollowUps:13
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Hi,

How does the fuel filter pump work in the diesel 4.2 patrol's (GU)?? I'm guessing it's a piston type pump that you just lift and push down, I couldn't get the black plastic know to budge yesterday.
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Reply By: Truckster (Vic) - Monday, Sep 27, 2004 at 09:05

Monday, Sep 27, 2004 at 09:05
You basically 'lean' few times, then have to release the pressure screw (white butterfly bolt) to release the fuel/air, it doesnt come up 2inches or down 2inches, it moves about 1/3 a centimeter! if that....

Almost sounds like when you open a vacuum sealed orange juice bottle that 'popping' sound.
AnswerID: 77926

Follow Up By: Austravel - Monday, Sep 27, 2004 at 09:13

Monday, Sep 27, 2004 at 09:13
Sorry don't get ya, lean a few times??

I can't get the black knob on top of the filter housing to move even a mm. Though there is no air in the line I just thought I'd see how to do it if I run out of fuel etc, does this make a difference.
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FollowupID: 337491

Follow Up By: Truckster (Vic) - Monday, Sep 27, 2004 at 09:18

Monday, Sep 27, 2004 at 09:18
Lean on it - push down on it. It is already in the 'UP' Position, you just push it down - but dont try and move it a foot, it only moves few mm...
Will try mine again when I get home.
I actually think there is another thread on this round here, try searchin.
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FollowupID: 337492

Follow Up By: Member - Chris M (QLD) - Monday, Sep 27, 2004 at 09:20

Monday, Sep 27, 2004 at 09:20
Gday Austravel,

How's it all going? My car is downstairs, but I could find out about the pump fairly quickly. Apart from that, all running smoothly?

Cheers

Chris.
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Follow Up By: Member - Chris M (QLD) - Monday, Sep 27, 2004 at 09:22

Monday, Sep 27, 2004 at 09:22
trucky, is the pump on the GQ the same as the GU, I remember the black pump on top, but haven't taken much notice of the GU, think I'll go down and check...
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Follow Up By: Truckster (Vic) - Monday, Sep 27, 2004 at 09:33

Monday, Sep 27, 2004 at 09:33
Check here
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FollowupID: 337496

Follow Up By: Austravel - Monday, Sep 27, 2004 at 09:40

Monday, Sep 27, 2004 at 09:40
Thanks guys,

Couldn't get past the idea it was in the down position. Now I get it! I'll have a look tonight I don't remember there being a bleed nut at the top. I recall a drain nut at the bottom with a bit of clear hose on but will have to look a bit closer tonight.

Thanks again.
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FollowupID: 337497

Follow Up By: Truckster (Vic) - Monday, Sep 27, 2004 at 09:41

Monday, Sep 27, 2004 at 09:41
I was the same, tryin to lift it up, I thought of a pump that would move 3-4niches.. Nearly ripped me fingers off.

Do you ahve one of the original glovebox manuals, that explains it.. i have a spare if you dont. $20+post.
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FollowupID: 337498

Follow Up By: Austravel - Monday, Sep 27, 2004 at 10:22

Monday, Sep 27, 2004 at 10:22
Thanks Truckster, did the same thing I was fairly heaving on the little black knob. I'll have another look in my manual, I didn't see it when I scanned through, but it must be there.
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FollowupID: 337502

Reply By: theratt - Monday, Sep 27, 2004 at 10:22

Monday, Sep 27, 2004 at 10:22
on the GU they dont have a bleed screw like the GQ , remove the fuel outlet line and pump away until you get fuel into a jar normaly only need to do this when you change the filter for a new one, and as you all say it dont go up and down much only a few mm
AnswerID: 77933

Follow Up By: Austravel - Monday, Sep 27, 2004 at 10:25

Monday, Sep 27, 2004 at 10:25
Thanks theratt,

I've yet to change a fuel filter, hence my questions. The filter prices are a bit of a shock compared to my old petrol GQ.

Do you use genuine or are there cheaper replacements out there??

Thanks
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FollowupID: 337503

Follow Up By: theratt - Monday, Sep 27, 2004 at 10:45

Monday, Sep 27, 2004 at 10:45
i just go to nissan and get what i have to, i figure i am saving anyway as i do all my own servicing on my vehicle, if anything breaks its going to be my problem i know, but i have that many modifications my warranty must be nearly void, although i did get a new bullbar off mr nissan after mine cracked, not without a fight though
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Follow Up By: Austravel - Monday, Sep 27, 2004 at 12:02

Monday, Sep 27, 2004 at 12:02
Thanks, probably what I'll do as well.
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FollowupID: 337513

Reply By: sevo - Monday, Sep 27, 2004 at 20:37

Monday, Sep 27, 2004 at 20:37
Gday Everyone,
I use a CAV filter system first and then it passes through the original fuel filter. I do this as i see the genuine filters become quite dirty after 10-15000 k and they arte cheaper to change.
Steve
AnswerID: 77982

Follow Up By: Austravel - Tuesday, Sep 28, 2004 at 10:15

Tuesday, Sep 28, 2004 at 10:15
Hi,

I'd heard that the nissan pump can't handle a second filter inline with the orginal and it should be one or the other. Is this right or you've done something different?
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FollowupID: 337607

Follow Up By: sevo - Tuesday, Sep 28, 2004 at 11:53

Tuesday, Sep 28, 2004 at 11:53
Gday Austravel,
I have worked for nissan for 13 years and have not seen a problem with dual fuel filters. Most diesel specialists recommend 2.
Thanks
Steve
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FollowupID: 337624

Reply By: Vinnie - Monday, Sep 27, 2004 at 21:16

Monday, Sep 27, 2004 at 21:16
Yep, gotta CAV filter before the main. Drain crap out of it every couple of weeks. I still change the main every 10,000 though as a safe-guard as $20 here is cheaper than a donk re-build.
As for the pump - Push down twist and it will pop up ready for action, to close it -push down and twist the other direction.
AnswerID: 77991

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