Isuzu Trooper Owners Club UK™

tootall · ** Joined: 16 Jan 2009 Posts: 62

it used to start on the button 1st turn first thing in the morning no problem but now it wont?

its a 3.1td citation.

ive changed the air filter, fuel filter, oil and filter getting done on tuesday.

thing is after i did fuel filter the book says i have to "prime" the fuel through.....how far does the primer move? im only getting about 10mm push down movement then it spings up again is this correct? the book says push down and turn anti clockwise to loosen it but im getting no lift when i do this..
also when ya push down should i get fuel out of the out let pipe in the filter houseing ? as when i push down with the movement i have i get nothing.

next thing...the pipes from egr to the electrics bit if i take off from egr and put my finger over the end i get a "hiss" from the electrics bit on one pipe, but nothing at all when i do the other pipe.....the "hiss" still goes on after ignition is off for a short time then stops.

the injectors are also to be checked on tuesday...........i know the garage will sort it but id like to know abit about this problem and how to sort it also.

any body got a clue?

cheers

Google · Sponsor

Mick · Posted: Sat Jul 04, 2009 21:39 Post subject:

are you opening the bleed screw

tootall · ** Joined: 16 Jan 2009 Posts: 62

yes mic, opening then push down then tighten, similar to brake bleeding method,but still no fuel spurting, but the car runs fine after it starts.

Gribble · Posted: Sat Jul 04, 2009 22:13 Post subject:

Nope jus open and pump away till you get some pressure and diesel squirting !
_________________
2 New Troopers !

tootall · ** Joined: 16 Jan 2009 Posts: 62

well il try that again tomorrow gribble, is it right that i only get about 10mm push down though? also wld nt it effect the running whilst driveing it?

Gribble · Posted: Sat Jul 04, 2009 22:28 Post subject:

Is the primer on the filter or the lift pump ? On filter its about 10mm but if you have one on the lift pump about 25mm once its unscrewed.

Wont hurt the cars running once the screw one is wound down tight , the other sort is fine as it is .
_________________
2 New Troopers !

tootall · ** Joined: 16 Jan 2009 Posts: 62

primer is on the filter gribble,

i did spend some time after new filter went on pumping and pumping but got nothing,il try again today and see what happens.

eventryed the blocking off egr maynot have been the best way as the car ran *beep*,(disconnect electrics,put a screw in each valve where pipe goes on to pipe back over the top.)so took it out again.

Gribble · Posted: Sun Jul 05, 2009 15:13 Post subject:

Easy test - take off the pipe that comes from the diesel tank off the primer inlet and put your finger over it and pump . If it sucks yer finger and stays sucking its ok on the suck side . if not it might be the primer is faulty so take off the pipe that goes to the injector pump from the primer and put yer finger on it and see if it blows if not the primer is at fault.

I guess you have the new filter done up tight ? now you can get round this by sucking the diesel up to the filter with a aftermarket primer pump like rallymarshall has in his pics as its cheaper than a new one or maybe a breakers ?
_________________
2 New Troopers !

tootall · ** Joined: 16 Jan 2009 Posts: 62

ok quick update on this..ive given up!

the garage can sort it.

ive primed it till me arms dropping off,and still nothing coming through to spurt out of the filter exit pipe.
i think id need to try an aftermarket type one.its definatley fuel starvation that it wont start when its cold.(in my untrained opinion any way)

i think it may well be the primer at fault cos the car runs ok when its started.........im guessing the fuel system works from vacum? cant see a fuel pump fuse anywhere.

Grandad · ******* Joined: 22 Sep 2005 Posts: 1902 Location: NORFOLK

if the primer pump wont pump fuel then either the diaphragm in the pump is holed or you have air being drawn in from rusty holed fuel pipes probably back near the tank
when running the fuel is drawn from the tank by an internal rotary pump in the injection pump this a mechanical pump hence no fuse

tootall · ** Joined: 16 Jan 2009 Posts: 62

thanks grandad,

so mechanical pump = vacum pump? or summat like that.

is the diaphram in the filter pump changable?

i did the pipe off the inlet side and pumped and to be honest i cant say that it was sucking my thumb onto it,but on the outlet side it did seem to push alittle.

when the bleed screw is undone i can hear air being pushed out so could this mean the diaphram is still ok?

Grandad · ******* Joined: 22 Sep 2005 Posts: 1902 Location: NORFOLK

mechanical pump means mechanical pump Wink

vacuum pump Question

not for fuel for brakes only
filter diaphragm not changeable AFAIK if U/S fit new
to test put inlet hose in diesel in separate can if it pumps diesel then its good and problem is with metal pipes

tootall · ** Joined: 16 Jan 2009 Posts: 62

thanks again grandad,

il try get time to try that before nightshift on monday.
failing that im sure my trusty mechanic will solve it on tuesday,waiting on prices for replacement pump/primer from an auction site.

AD · Posted: Mon Jul 06, 2009 6:58 Post subject:

All 3 of our troopers have become difficult to start at some point and it was rusty pipes on top of the fuel tank in all 3 cases.

Believe it or not the primer pumps do not work on all 3 troopers, fine if the fuel is there but they wont draw fuel from the tank i use a small electric pump or one of These it's the only way i can prime them Rolling Eyes

_________________
2011 3.0l Hilux Invincible
94, 3.1 duty
95, 3.1 commercial, Agricultural licence
04, 3.0 citation

rallymarshall · Posted: Mon Jul 06, 2009 21:40 Post subject: