Isuzu Trooper Owners Club UK™

davidswa · * Joined: 06 Mar 2009 Posts: 33 Location: midlands

all the gears all lined up i.e the 2 dots on 1 gear and 1 dot on another,all spot on and all the balance gears matched as well.the high pressure oil pump also lined up.the cam shaft was locked and that lined up at the top ,the timing belt was fitted and turned 2 revs to settle the belt.im not sure if their is anything else to check as thats all i could find on the cd. the cranksensor wasnt disturbed during the rebuild ,obviously i had to remove the cam sensor bracket all the vac pipes were checked as well

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Red Robbo · Posted: Sun Apr 12, 2009 20:07 Post subject:

Gribble · Posted: Sun Apr 12, 2009 20:15 Post subject:

How did you check for #1 at TDC ? just humour me here as I am sure its just a simple thing thats overlooked stopping you running Wink

davidswa · * Joined: 06 Mar 2009 Posts: 33 Location: midlands

i checked no1 tdc from the mark on the crankshaft(little one) with the timing mark on the engine case , when the crankshaft pulley was removed even the keyway was at the top so everything was at 12oclock .is their any kind of tooling which is available to lock all the timing gears and camshaft (like the ford engine) when i checked the timing gears i fitted the timing cover to double check the crankshaft mark an then proceded to check all the other timing marks

Gribble · Posted: Sun Apr 12, 2009 20:40 Post subject:

That all seems spot on so far . I dont think there is lock up tooling just the bar across the cams at the back of the head and the key on the exhaust cam , did you have the cams out of the cam box ?

davidswa · * Joined: 06 Mar 2009 Posts: 33 Location: midlands

i didnt remove the cams from the carrier as i didnt want to disturb the meshing of the cams.ive just been reading about the filter by pass valve and the oil rail pressure valve and how dieseled fuel can cause them to stick does anyone know where the filter bypass valve and the oil pressure control valve are located and can they be checked

Gribble · Posted: Mon Apr 13, 2009 18:36 Post subject:

The bypass valve is in the filter itself ,the pressure relief valve for the injection oil lower pump is in the block to the right of the filter.

To affect the ropcv the engine must have run a bit so the diesley oil gets into the valve - did yours do that ? also it would I think ,take a bit more diesel in the oil than would run down from lifting them if you had cracked the inlet pipe off first .I am not the best one on here to say how long it can run and how much diesel in the oil before anything gets damaged as I have not worked on that many but eithan has and will pass comment .Soon .

To check it in place needs tech II which can see the injector oil pressure and the % the ropcv is being set to .

You can remove it quite easily to check if the spool is stuck but please ! put a new one in if its the problem cos it will only fail again - that I can say for sure Wink

Look at the hpop and see a electric connector - that round bit underneath is the valve .It may help to take off the ECU ,fuel filter and some of the pipes as well as the metal fuel pipe.take off the 19mm thin nut , the spacer and slide the solenoid off it may be tight but go easy with it as it damages .
Then with a 1' 1/8" ring spanner or 29mm undo the valve body , remove and clean it off with solvent . take a small screwdriver or allen key and push on the tiny spool inside the main valve body it should move smoothly back a bit then return on its own .if it wont move or feels rough its scrap and the cause of your problem.

davidswa · * Joined: 06 Mar 2009 Posts: 33 Location: midlands

thanks for all the advice im at work for the next few days so when im off i will give it a go and let you know the outcome

jmgreen · Newbie Joined: 11 Mar 2008 Posts: 5 Location: UK

Have you tried tow starting it,after they have been in bits the injectors oil rail takes some priming.I did one a few years ago and had the same prob,isuzu told me just to tow it in 2nd or 3rd gear until it ran.
Also on another incomplete non runner I that I bought the ecu had been fried,probably with a booster charger.I had a spare ecu and a friend changed the immobilise chip for me.
I had it at K T Greens and the cam sensor had failed.Also the heater plug fuse had blown making it start poorly.
They fit new injectors under the recall then a cam sensor to get it running but it ran very lumpy and clattery with a lot of white smoke due to the injectors damaging the bores.
They fit me a new short engine,head,throttle,cat,injector oil pump all free.Very nice people Very Happy

Hope this is of some use

Wirdy · Posted: Mon Jun 15, 2009 21:46 Post subject:

Is it ever a good idea to tow start a 4x4 diesel?

I've only ever done this on non-cat petrols when the battery has been so flat that there wasn't enough to power the starter AND a spark.

Just wondering Confused

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2001 3.0 DT LWB Duty - Dragon Green Metallic.

jmgreen · Newbie Joined: 11 Mar 2008 Posts: 5 Location: UK

No problem towing these troopers or any manual diesel really.Isuzu told me they sometimes can't get enough oil pressure to the injectors by just cranking with the starter after a head removal so you have to give them a good tow until all the air is expelled from the oil rail and injectors and they run smooth.