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QD 32 Problems???

Tech Talk for Nissan owners.

Moderators: toaddog, V8Patrol

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Posts: 73
Joined: Mon Jan 28, 2008 9:43 am
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QD 32 Problems???

Post by 4runner_boy »

Gday my old man has a 98 mdl nav,it has the QD 32 engine ,lately it has been chewing a sh#tload of fuel,we have changed all filters and has made no difference,i have heard that the EGR valve tends to stick on these.
Can anyone confirm this and where and how can i fix it<
Your help would be appreciated cheers
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Post by patrol man »

EGR valve? I don't think these have an EGR system. have you checked the thimble filter in the pump ? (4.2l diesels).
Living the dream on the hill that floods
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Post by 4runner_boy »

Ok its not a 4.2 its a 3.2 navara,could that cause it to chew more fuel cheers
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Post by dave_str »

The QD32 is virtually a cut down TD42, I wouldn't be surprised if they do run the banjo filter in the injection pump like the TD42's.

Dave
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Post by 4runner_boy »

sounds like a big job would that filter clogging up cause it to chew fuel
Yom
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Post by Yom »

How many KM has it done? Its more likely that its time for the injectors to be tested/rebuilt if required and the pump adjusted to suit how its been wearing.
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Post by 4runner_boy »

its done 140K , Is it hard to adjust the pump up?? cheers
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Post by tweak'e »

i'm not that familar with those motors. however some i think some are fully ecu controlled. no pumps tp tweak. just pay to check if its mechanical pump or not and if it has egr (look for pipe going from exhaust to inlet).

any smoke ?
if so what color and when do you see it?
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Post by OL GQ UTE »

check the filter on hte injection pump, i know on td42's they are a quick job usually costing about $30
are you finding a lack of power or just incresed fuel consumption?
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Post by 4runner_boy »

yeh lack of power blowing black smoke but not excessively,im going to chop the muffler out maybe that is causing it,it hasnt been changed
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Post by tweak'e »

black smoke + lack of power.
most likly intake restriction ie blocked filter or crushed intake.
2nd, egr stuck open (if it has one).
otherwise injectors
lastly if its had some work done on it, cam or injection timing is out.
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Post by 4runner_boy »

He has just told me,they realised it started using more fuel after picking dodgy fuel up,they had cleaned everything out and new filters and put some cleaner additive in.The problems still there.
It has to be injectors i think.
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Post by OL GQ UTE »

as i said check injector pump filter is veeeeerrrrrryyyyyy common prob that isnt picked up on quickly, change all filters oils only to find fault still there
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Post by 4runner_boy »

ok mate ill give it a try first cheers
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