low sulpher fuel problems

Submitted: Thursday, Jun 17, 2004 at 00:55
ThreadID: 13848 Views:2699 Replies:7 FollowUps:2
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I have 1990 GQ 4.2td ,Recently i had a VE fuel pump leaking problem, luckerly it was the was the top square cover O Ring that had shrunk and i was able to replace with new type o ring material with pump in situ ,the other o rings require pump to b removed and reset on test bench (the problem stems from the new areomatics used in low sulpher fuel shrinks the old O ring material, BP initialy replaced seals under insurance until thier cover exceeded $20 mil limit) also sulpheris a lubricant needed in VE Rotary pumps, My worrie is have the fuel cos added a lub additive in there new fuel specs (John Deere and other OEM `s advised you must use an aditive or void warranty) any infowould b appreciated
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Reply By: Rob W. - Thursday, Jun 17, 2004 at 07:00

Thursday, Jun 17, 2004 at 07:00
I have a 2001 3.0TD patrol and use a fuel additive called flashlube. I add it about every 5th tankfull. I claims to lubricate the components in the injector pump as well as condition seals. There are a few other additives on the market as well. I know the later models (I believe from the late 1980's on, have the new improved seals to cope with low sulpher diesel) should cope with the low sulpher diesel. I use it as peace of mind as it was recommended by a diesel specialist.

AnswerID: 63533

Reply By: JamieMac - Thursday, Jun 17, 2004 at 08:46

Thursday, Jun 17, 2004 at 08:46
Had similar probs with my top cover some years ago in QLD. Recently the side seal started leaking.

I replaced the speed timer cover o ring (RHS of pump) myself whilst the pump was in situ. Cost $3.50 for the special o ring from my local diesel mechanic and about an hour of my time to change it. I bought two o ring in case I damaged one and it is the same as the one on the opposite side. No special tools required but be clean with all the stuff you touch and tools you use.

The LHS o ring does need the pump removed from what I could see so luckily it is not leaking.

When you are finished just prime the pump at the filter and run it at reasonable revs for 10 min or more to get all the air out as there will still be some trapped. When it will pull high revs it should be OK to drive away, good as new.

Hope this helps anyone else caught by the dreaded low sulpher bug.
AnswerID: 63541

Reply By: ianmc - Thursday, Jun 17, 2004 at 10:09

Thursday, Jun 17, 2004 at 10:09
While on fuel problems have heard that in West Vic that the winter diesel is
now rated at 2C rather than minus 2c as in previous years & the service depots are expecting plenty of work from clogged systems. Has any one experinced this problem and what was the result??
AnswerID: 63550

Reply By: -OzyGuy- - Thursday, Jun 17, 2004 at 10:30

Thursday, Jun 17, 2004 at 10:30
I was using the BP fuel for some months because I read how good it was for the engine, on a 4x4 forum, after some time I noticed that I was loosing power and blowing the dreaded diesel smoke...
I went to a local diesel specialist and was going to book it in for a service....
was tuld to try a change of fuel to Caltex from the local depot.

within 2 Klms I could feel the difference and next night drive there was no diesel smoke, economy went from 380-400 Klms a tank to >450 Klms.

The engine is a Toyota 2L yes old but faithfull.... and now getting 9.5 Litres per 100 Klms.

I understand that the BP is good for the new generation of engines because of all their new specifications and anti smoke and gismoes added to them to make them clean and green, and not very user friendly in the service department. :)
AnswerID: 63554

Follow Up By: madcow - Thursday, Jun 17, 2004 at 11:00

Thursday, Jun 17, 2004 at 11:00
Agree with you re: BP fuel. Last trip out i filled up with BP and it certainly blew more smoke. I now fill up with Mobil and it has dissapeared. This is on a GU111 4.2TDI.
FollowupID: 324790

Follow Up By: B3 - Thursday, Jun 17, 2004 at 16:18

Thursday, Jun 17, 2004 at 16:18
I also have Toyota 2L motor, but I swear by the BP diesel from my local outlet. I get better economy and power compared to any other retail brand. No problems with leaks, etc but worth noting that I had my injector pump rebuilt a couple of years ago so probably the new seals are okay with the low sulfur fuel. Lubrication shouldn't be an issue anyway as BP already add lubricant to replace the sulfur.....
FollowupID: 324813

Reply By: Jimmy - Thursday, Jun 17, 2004 at 20:26

Thursday, Jun 17, 2004 at 20:26
I have an 89 GQ on which the fuel pump leaks if I fill up with BP deisel
I now only buy fuel from Caltex and the pump hasn't leaked since ( about 4 months now) Be Buggered if I know why, but if it doesn't leak I'm happy!
AnswerID: 63649

Reply By: crayman - Friday, Jun 18, 2004 at 11:48

Friday, Jun 18, 2004 at 11:48
spoke to BP Technical dept
1 In the West BP refine 90% fuel sold here 50 parts sulpher(most eastern states have up to 500 parts as per state gov regs, do add lub add if tests under 50 parts)
2 Have now removed areomatics that caused shrinkage in pre approx 86 VE rotorary fuel pumps
3 Late model fuel rail diesels are designed to run on low sulpher fuels( preferably only low sulpher ,3l nissan ect)
4 Most of the Majiour oil co`s operate on a borrow and loan situation with the refiner in each state so diff brands are usely from one or maybe two refinery`s in each state
5 Fuel Specs over east are about to come in line with WA
AnswerID: 63746

Reply By: Old Jack - Monday, Jun 21, 2004 at 21:04

Monday, Jun 21, 2004 at 21:04
at 14 years old they probably would have started to leak anyway even with the old hight sulphur fuel, at the end of the day if you have the correct modern seals & O rings fitted (some placed still using the older style materials) you will have no problems with leakage. as for the lubrication ablity of the fuel, lubricity addatives are added to make the fuel meet specification.

in Europe they have have low sulphur diesel since the 1970's. the French got around the lubrication problem by making it madatory to have 5% Bio-diesel(rapp seed or Canola) only 1% is required to make it a better lubricant than high sulphur diesel and it's better forthe enviroment and motors last longer!

5% renewable energy by LAW! in 1972!

WE ARE 30 YEARS behind the times with fuel, bring on the cleaner diesels!

Wishing you Safe and Happy motoring
AnswerID: 64284

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