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Post by Harry on Nov 27, 2005 21:16:39 GMT 11
Finally got around to repairing the leaky squirter pump on my road truck.Bought a gasket and o ring,pulled the motor out [easier to work on the pump and I want to change the front diff,also easier with the motor out] and opened up the timing cover.Foung fuel in there too so the pump front seal must be stuffed.Will install my spare pump and get the other one overhauled when I can afford it.Our man Helen should be paying for all these fuel problems!.
Harry.
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Post by geeves on Nov 28, 2005 17:41:13 GMT 11
Thats not nice! Ive got a slight diesel smell round the engine but not bad yet. I had a good look round with a torch but all seemed dry. I didnt look there but will on the weekend.Are there any seal conditioners around that will work in the short term?
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Post by Harry on Nov 30, 2005 20:03:42 GMT 11
Mine started leaking about a year ago but has gradually got worse to the extent that there's diesel on all forward facing surfaces under the truck and the lower left of the engine bay is wet.With wof overdue and the cost of the wasted diesel it's time to do something about it.
Harry.
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Garth
Isuzu Senior
1989 Bighorn Irmsher R LWB
Posts: 164
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Post by Garth on Dec 6, 2005 19:19:24 GMT 11
How did you get on with the injector pump harry? Just hoping my one doesn't start leaking any time soon, been all good lately.
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Post by geeves on Dec 6, 2005 20:30:07 GMT 11
I think we are all looking at 16 year old seals that were aparantly designed to last 8. Every failure Ive had on my car can be traced back to somthing rubber and the only thing Ive done to my engine is hoses and belts so its only a matter of time I think.
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Post by Harry on Dec 8, 2005 19:48:44 GMT 11
I fitted a spare pump while the motor was out.Quite easy really.The change could be done with the motor in place but you have to take the pulley off.I've had to use a gear puller with a smack on the end once it's loaded up and there isn't a lot of room to swing a hammer even with the radiator out.Ithink it would be a bit of an act retensioning the belt too.I suppose I'll find out when I put in a new cam belt in 10000 km.The diff change was a lot easier with the motor out of the way.Two people could probably do it ok but I was able to use a hoist.
Regards ,Harry.
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Garth
Isuzu Senior
1989 Bighorn Irmsher R LWB
Posts: 164
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Post by Garth on Jan 19, 2006 10:40:44 GMT 11
well my injector pump finally started leaking yesterday, a nice puddle of fuel on the driveway when I park it up now. Just waiting to get a spare one to fit.
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Post by turnturn on Jan 19, 2006 12:09:25 GMT 11
Does anybody have any good drawings or other information showing the workings of the type of fuel distributor pump fitted to the early (4JB1-T) Isuzus? I've never had one apart and was wondering how it all works.
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Post by geeves on Jan 19, 2006 14:18:27 GMT 11
with the exception of a couple of external seals and the adjusters The inner workings have such fine tollerances that they are only worked on in a tank of clean diesel.
All thats realy in there is a single pump and a distributer to send it to the right cylinder. Add to that a few controls and its quite simple but I wont be touching mine.
Definatly best left to experts
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Garth
Isuzu Senior
1989 Bighorn Irmsher R LWB
Posts: 164
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Post by Garth on Feb 21, 2006 13:57:30 GMT 11
Had a look into why my spare pump was leaking, it was supposed to have been overhauled but when I removed the top cover I found they had just fitted a generic quad seal that was 0.3mm smaller than the gap it is supposed to seal, also it had been twisted during installation. Found an easy and relatively cheap fix. get a standard 3mm x 85mm o ring and fit this around the seal groove, fits nicely. The small seal on the throttle input shaft can also be replaced with a standard 6mm oring. total cost $4. If you're going to play around with your pump yourself the Club Isuzu and myself take no responsibility for anything that may go wrong, all I am suggesting here is a possible way to solve a leaky pump if you want to take the risks. Also have some photos from when the pump was in bits that I can email to you if you wish to have a look. will post them on the auckland website too. Cheers.
Tried to get the genuine seals from Holden and Autolab but they are unable to supply them any more. Supposed to be only 3 diesel specialists in Auckland capable of repairing these pumps due to new fuel. something about recalibrating the pump? sounds expensive to me. after all it's just an old truck now and that sort of money to fix a leak is just crazy.
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Post by Harry on Feb 21, 2006 19:38:47 GMT 11
I bought the o rings to do mine from the Holden/Toyota dealer in Matamata.The throttle spindle one is a Toyota part but the cover seal [shaped o ring] is Isuzu.I havn't fitted them because I had a spare pump.But I don't suppose that will last very long either.
Regards,Harry.
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Post by geeves on Feb 21, 2006 19:55:43 GMT 11
I wouldnt mind a copy of the pics please. I have the same beast as you and at 187000 its only a matter of time before the same happens to me
alan.geeves@xtra.co.nz
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Post by geeves on Mar 5, 2006 17:21:53 GMT 11
I spoke too soon on the last post. Now have little smelly puddles under the truck. Does failing top seals show as leaks about half way down the pump.
Will be getting some quotes tomorrow before attacking this
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Garth
Isuzu Senior
1989 Bighorn Irmsher R LWB
Posts: 164
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Post by Garth on Mar 5, 2006 17:50:26 GMT 11
Hard to tell where mine is leaking from but gets diesel all over the place after a long drive, should know if the new seals fix it by next weekend.
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Post by mudgrip4 on Mar 6, 2006 15:52:54 GMT 11
Blew the little shut off valve ($40) on the diesel pump last week, and while at big diesel servicing outfit in Chch asked boss their price to do all seals on 2.8 bighorn pump. Said $550 to service the pump and about $1000 all up if removal and refitting of pump involved. This is bad enough, but then he pointed to a couple of mid 90sish (computer operated?) electronic injection Terranos and said the price for the whole servicing and expensive parts for them was $3300 apiece. Felt slightly relieved...
Have 7 friends with various makes of vehicles who have been running Wynns EDT diesel treatment (to preserve seals and provide pump lubrication) for last 2-3 months now, and so far all pumps still good. fingers crossed.
Mike
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Post by geeves on Mar 6, 2006 17:50:30 GMT 11
I was looking at a Nissan Avenair with the electronic pump but was told a similar story. Still nothing like the damage that can occur when the injector seals fail in a 3.0 isuzu engine. Ive heard of some with $10000 engine rebuilds(luckily NZ new and still under new warrentee) and others where the only way to stop has been find a large imovable object.
nothings perfect
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Post by draganlada on Mar 6, 2006 19:07:50 GMT 11
At my diesel mechanic there is one holden jakaroo seating over there for more than one year waiting for owner to pick it up coz it was to expensive for him to repair it ($24000 AU for engine,pump and injectors rebuilding)!!! It is 3.0 td isuzu engine.
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Post by geeves on Mar 6, 2006 19:59:41 GMT 11
I dont know your consumer laws but Im sure that the owner would have a good case against Holden due to the injector recal on that model.
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