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  #31  
Old 02-04-2019, 12:27 AM
Horatius Horatius is offline
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ps. I brought a couple when I changed the primer pump. They don't come with it, I remember something funny about that in their catalogue they are shown with the filter instead of primer pump, as they consider them a consumable that you would replace with the filter or something.

https://www.ebay.ie/itm/GENUINE-Niss...wAAOSw~p1bmHRh

A patrol zd30 one, same deal though.
https://www.ebay.com.au/itm/Fuel-Pri...-/283097175140
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  #32  
Old 02-04-2019, 08:46 AM
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the seal is simply not required.
i havn't seen ANY vehicle with one, let alone the d22 and we have two of them from new.

according to the mechanics is down the the filter used. filters these days seal on the thread quite well. possibly cheap ones that have poor threads i would be useful.
if the seal is required it will come with the filter.

the only time it will be of use is if the filter is seriously clogged. the seal only stops fuel from bypassing the filter and it will require lots of suction to be able to do that.
better to just change the filter.
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  #33  
Old 02-04-2019, 10:01 AM
Horatius Horatius is offline
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Fair enough. I won't dispute its usefulness.

But mine has always had one, they do make them, and there is a genuine part number. Up to yourself I guess.
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  #34  
Old 04-04-2019, 12:36 AM
Horatius Horatius is offline
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ps. not to argue here as each to their own, I'm guessing most D22's don't have this seal, if they fall off with the filter or whatever I don't see a mechanic worrying about it and no one would notice any difference anyway. Until you get some poor quality fuel and the filter gets waterlogged or starts to block up. Can see it as a potential problem then. Changing the filter would be obvious then, but I can see where it won't take much to bypass for that to be a bit late. Could be wrong of course, which would make it an inexpensive placebo.

Would be interesting to see out of the people who've needed a pump rebuild, how many have had this seal, or not.

Last edited by Horatius; 04-04-2019 at 01:01 AM.
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  #35  
Old 05-04-2019, 12:04 AM
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Shorty4655 Shorty4655 is offline
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The seal I am lead to believe was never present on our engines or the zd30 patrol. It looks like it was in the td42 fuel filter head assy which has an almost identical appearance apart from the bleed screw, it also uses the z332 filter, hence like has the exact same dimensions, meaning Nissan like cut costs and used virtually the same mould on the zd30 as they did the td42 which had the seal seat. The td42 filter assy actually comes with the seal if you buy the whole thing. The issue with the seal on a zd30 filter assy is if you have a look at the filter surface where the seal has to sit against the filter body and its not a good sealing surface, it has curvature to it, unlike the sealing surface on the outer rubber ring which sits flush against the flat surface of the filter assy. But I'm sure there is no harm by using a seal in that spot, it's likely just overkill
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  #36  
Old 05-04-2019, 02:15 AM
Horatius Horatius is offline
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How did you get on anyway shorty? Was it just crap i the tank? Pump alright?
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  #37  
Old 05-04-2019, 02:30 AM
Horatius Horatius is offline
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Quote:
Originally Posted by Shorty4655 View Post
The seal I am lead to believe was never present on our engines or the zd30 patrol. It looks like it was in the td42 fuel filter head assy which has an almost identical appearance apart from the bleed screw, it also uses the z332 filter, hence like has the exact same dimensions, meaning Nissan like cut costs and used virtually the same mould on the zd30 as they did the td42 which had the seal seat. The td42 filter assy actually comes with the seal if you buy the whole thing. The issue with the seal on a zd30 filter assy is if you have a look at the filter surface where the seal has to sit against the filter body and its not a good sealing surface, it has curvature to it, unlike the sealing surface on the outer rubber ring which sits flush against the flat surface of the filter assy. But I'm sure there is no harm by using a seal in that spot, it's likely just overkill
That would mean I'm wrong. Bugger lol. I'll keep using it though, cheap placebo.
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  #38  
Old 05-04-2019, 05:36 AM
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Quote:
Originally Posted by Horatius View Post
How did you get on anyway shorty? Was it just crap i the tank? Pump alright?
Hey mate, yeah so after I changed the fuel filter for a second time the ICV% came back up, its sits a 35% warm idle which Nissan defines pretty much as the lower limit for normal operation. The diesel specialist guy who tested it said its unknown how long it will last, could go for years without problems or could go in a couple of weeks. So yes, the fuel filter was chock a block with debris causing a flow restriction. I did also use some liquimoly diesel injector cleaner straight through the pump when I had all the hoses off for replacement. But given the debris I could see in the fuel filter I am pretty well inclined to believe it was at max saturation at which point flow was impeded and hence the low ICV% I was seeing. I have never monitored the ICV% before as I don't have an ecutalk monitor mounted to my dash, all I do is hook the cable to a laptop for diagnostic tests etc, so potentially my icv% could have been 35ish for a long time so I have no idea if it has deteriorated at all since I have owned the car.

Given its about 5k for a new rebuilt pump installed a figure I am better off waiting till I actually get symptoms of it dying, or when I get back from this trip I could source a rebuilt pump and attempt the install myself, I am just not comfortable with keeping the timing correct, I know you have to put a dowel or something in the time gear to make sure the timing stays the same when the new pump is reinstalled.

Hopefully the pump will last the 11000km trip to the Kimberley and back, I have faith as the D22 is yet to let me down too badly.
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  #39  
Old 15-05-2019, 02:09 AM
Horatius Horatius is offline
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Thanks shorty. It's good to hear how people get on, quite often when people have a problem they never report back and let us know how things were resolved, if they were...

ps. I agree re the pump, that's a lot of dough. Not sure my car is worth that much lol.

Last edited by Horatius; 15-05-2019 at 02:12 AM.
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