2002 turbo diesel trayback problems
Submitted: Friday, Sep 24, 2004 at 17:15
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fatboy
Hi All , This week a mate in our workshop looked at purchasing a second hand turbo diesel trayback , nice truck 50,000 on clock , pretty clean or so he thought , after driving for a few days a vibration and a kind of knocking noise was noticed .The vehicle was taken to our local diesel guru ( really knows his stuff ) and the problem was diagnosed as detonation .CAUSED by dirty fuel in the system playing havoc with the electronically controlled pump.Prognosis was to rebuild pump and injectors , cost $7000 dollars . Only one company in australia rebuilds these pumps and must be purchased and fitted through Toyota dealership because of contractual obligations between said company and Toyota . Problem stems from after market fuel filters being fitted ( note toyota filter has two o rings not one ) apparently second o ring stops fuel being pushed past filter thread, and filters not being soaked in diesel for at least 8 hrs before fitting . Apparently should change 4 primary filters to one secondary filter . just wandering if any one else has seen or had this problem .
P.s love the way toyota stich up the market on their pumps , makes me glad I own a carby fed petrol hilux.
Reply By: Member - Brett H (QLD) - Friday, Sep 24, 2004 at 18:16
Friday, Sep 24, 2004 at 18:16
Have had no experience withthese engines but exclusive contractural agreements are a restriction of trade...illegal. I suspect something seems a bit fishy and I would ask for a second opinion.
Most after market filter manufacturers warrrant their product against damage caused by their product so if the filter has caused this problem make a claim against them.
AnswerID:
77726
Follow Up By: fatboy - Friday, Sep 24, 2004 at 19:19
Friday, Sep 24, 2004 at 19:19
Hi Brett , it doesn't really matter now as mate has handed vehicle back to original owner , but this information about the deal with toyota and the one company which reconditions these pumps is legitimate , apparently the only ones available are from outside the country ,Singapore I beleive . The injection specialist that gave us this info is very reiable and has no reason to tellstories .He was saying that these new high pressure injection pumps would suck a cat up a garden hose and that can be the problem with some after market filters as they have no seal around the thread so when the filter is blocked the pump just pulls unfiltered fuel through the clearance in the thread on the filters. Then mechanics which service these vehicles are putting them in dry when new , apperntly this is a no no and they should be soaked first so that the filter paper swells and is able to filter from the word go. So is that the fault of the filter manufacturer or the mechanic that fitted it ??
Fatboy
FollowupID:
337344
Reply By: Bob H - Friday, Sep 24, 2004 at 20:11
Friday, Sep 24, 2004 at 20:11
Hi Fatboy,
Ive driven 4bys and all sorts of trucks for many years and never heard of soaking the fuel filters for up to 8hrs before. if this is a true statement than the manufacturer should be liable for not insisting that their dealers follow the right servicing schedule. besides, who would buy a vehicle that you had to wait for 8hrs to fit a filter. that would be a 2 carton job out in the middle of nowhere, wouldnt it??
Regards
Bob
AnswerID:
77743
Follow Up By: fatboy - Friday, Sep 24, 2004 at 20:52
Friday, Sep 24, 2004 at 20:52
Hi Bob , I must admit that soaking the filters is new to me also , this advice came from the injection specialist , whom I hold in fairly high regard , I am guessing he reccomends this in an ideal service situation . In saying that though he also recomends a heavy sediment , centrifuge type filter to be fitted before factory filters to try to avoid this sort of problem .What a lot of the problem really boils down to is the poor state of the fuel sold at some service stations in the first place .
Regards
Fatboy
FollowupID:
337359
Follow Up By: Member - Brett H (QLD) - Saturday, Sep 25, 2004 at 13:57
Saturday, Sep 25, 2004 at 13:57
If that was the case we would be able to buy "pre-soaked" filters. Another way of looking at the alleged problem is to throw the whole lot back at the manufacturer. If this process is required due to the alleged poor/dirty fuel quality here in Australia then one could argue that the engine is unsuitable to be marketted or sold for use with Australian fuel.........................food for thought.
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337392