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QD 32 Problems???
Posted: Sun Jun 01, 2008 10:56 am
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
Posted: Sun Jun 01, 2008 1:49 pm
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).
Posted: Sun Jun 01, 2008 6:03 pm
by 4runner_boy
Ok its not a 4.2 its a 3.2 navara,could that cause it to chew more fuel cheers
Posted: Thu Jun 05, 2008 8:09 pm
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
Posted: Thu Jun 05, 2008 9:00 pm
by 4runner_boy
sounds like a big job would that filter clogging up cause it to chew fuel
Posted: Thu Jun 05, 2008 9:23 pm
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.
Posted: Thu Jun 05, 2008 10:42 pm
by 4runner_boy
its done 140K , Is it hard to adjust the pump up?? cheers
Posted: Fri Jun 06, 2008 6:26 am
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?
Posted: Fri Jun 06, 2008 7:21 am
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?
Posted: Fri Jun 06, 2008 8:34 pm
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
Posted: Sat Jun 07, 2008 1:31 pm
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.
Posted: Sun Jun 08, 2008 7:31 pm
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.
Posted: Sun Jun 08, 2008 8:59 pm
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
Posted: Sun Jun 08, 2008 9:15 pm
by 4runner_boy
ok mate ill give it a try first cheers