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won't rev past 2 k

Tech Talk for Nissan owners.

Moderators: toaddog, V8Patrol

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Posts: 8
Joined: Wed Mar 25, 2009 7:57 pm
Location: st george

won't rev past 2 k

Post by jaksic »

I've just bougth a GU ute 2002 St plus limited adition (whatever that means).Couple nights ago we went for a bit of a cruise through our local tracks. The truck is prety much stock,but man these nissan limited slip diffs on the back are a little gem,all you had to do was get the nose over those rocks and the rest of the truck had no problem,even with fearly bold stock tyres she was a beauty.
But just towards the end she just did'nt want to rev past 2000 rpm.The bloke who had it before me was a bit bussy lately,so he only did an oil change on it.I noticed that the air filter was a bit dirty,and the fuel filter was also,so I changed them but she still want rev past 2k.
I appeal to you knowlegable nissen owners to give a bit of advice.Is it serious or is it just something simple? Please help :?
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Post by Dzltec »

It may have a filter at the inlet of the injection pump. Remove the 17mm bolt, if there is a spring under the bolt, there is a filter further down.



Andy
www.diesel-tec.com.au Ph 03 9739 5031
Ball bearing turbo upgrades for factory turbo vehicles. Got a diesel question just ask.
Home of the twin turbo shorty and many 150rwkw+ patrols.
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Post by jaksic »

Thanx for your reply Andy,do you think that if it has a filter at the inlet of the injection pump that it might be blocked?
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Re: won't rev past 2 k

Post by bogged »

Which engine does it have?
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Post by jaksic »

It has a 4.2 turbo
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Post by neilpatrol »

It'll be the gauze filter for sure on the inlet side of the pump, seen them so blocked they won't rev past 900rpm.
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Post by jaksic »

Is it an easy job to dismantel and clean?
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Post by bogged »

jaksic wrote:Is it an easy job to dismantel and clean?
Undo bolt,
fish out filter
clean
put back in
do bolt up
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Post by neilpatrol »

Very easy too do. 17mm socket with long extension, 3/8 drive is best. removes banjo bolt and swing fuel pipe out of the way, make sure u don't loose the copper washers. With a pick or a peace of wire remove the spring then the gauze filter, clean it out and put it back in. When re assembles make sure copper washers don't leak.
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Post by jaksic »

Thank you neilpatrol,and u2 bogged,I'll give it a go when I get home,and I'll let you know what hapened :)
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Post by jaksic »

You guys are absolutely fantastic :) The gauze filter was fearly well blocked.The engine revs beautifully now that I've cleaned it,much better than before.Thanx guys I owe you a drink,chears!
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Post by bogged »

I would consider removing the tank, and flushing it totally.. take a couple of hours to do, but well worth it to stop it happening again
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Post by jaksic »

I believe the tank has got a drain plug.I will give it a flush,thanx.
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Post by bogged »

jaksic wrote:I believe the tank has got a drain plug.I will give it a flush,thanx.
Main tank doesnt have a drain.
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Post by neilpatrol »

Sub (front) tank does, 12mm socket or spanner is needed.
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Post by GUte »

Apperently these filters block if using cheaper fuel filters, Ryco included.
The Nissan filters filter to 4 micron as this is what the Zexel pumps require.
The Delphi also is rated at 4 micron and alot cheaper than the Nissan filters.

Al.
AL

00 GU ST coil cab
93 GQ RX TB42 turbo wagon
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Post by msjc38 »

Use genuine filters or bosch. Dont use those cheap nippon max filters they fill the gauz filters with filter paper fragments
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td42 wont rev past 3000rpm

Post by fatsogq »

gday i have a 94 rx 4.2d and it wont rev past 3000rpm i put a new fuel filter in removed the 17mm bolt to clean the small gauze filter and there was no spring or filter. its a non turbo black top motor with no issues( oil burning high temp etc) i'm going to try a new throttle cable next, any ideas ? thanks
ps no the rubber mat isnt caught under the peddle :)
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