Burning oil. And tyre pressures.

the jonesys · Post by **the jonesys** » Tue Oct 20, 2009 7:26 pm

ok so we managed to do 2000 miles in our bongo on our ireland adventures after taking the head off compression tests reskimming injector overhauls various drive gear repairs not to mention a new cam belt and loads of other little jobs but it is burning oil a lot.
when we start the bongo it is perfect then at idle speeds it will start to smoke a lot untill we get going and it runs quite well but occasionally it is a bit lumpy and will smoke.
we have had nearly every job thinkable done to this engine but it uses a lot of oil.
the only conclusion we can come up with now is either the piston rings are gone [which i think it would smoke all the time] or the turbo seals are gone which would put oil in the chambers.
has anyone got any experience like this?can anyone recomend the next step to getting it right?
as soon as i get chance i will take the hosing off the turbo to see if there is any play in the fan bearings or could it be that exaust return valve thing i have read about that some people weld shut or was it open?
i have spent a small fortune on my bongo but i still love it to bits and need ir as good as possible so what do i do get a recon engine, replace the turbo ar could there be another problem thats causing it to burn oil?
although i am skint at the mo as we brought our bongo this year plus a new motorbike and had a three week holiday in ireland i intend to keep this vehicle for quite a few years and no matte r what the expence i want it right.if i need to get a reckon turbo where do i look for one?as the last job on the list would be the rings and rebore as it is a massive job and would have to have the crank shaft done aswell
any advice would be most welcome

maxheadroom · Post by **maxheadroom** » Tue Oct 20, 2009 7:44 pm

could be the oil seals in the turbo.

mister munkey · Post by **mister munkey** » Tue Oct 20, 2009 7:54 pm

the jonesys wrote: could it be that exaust return valve thing i have read about that some people weld shut or was it open?

Thats the EGR valve. A definate possibility, a techie will no doubt be along shortly to help on that one.

IF its turbo related, I have a spare one I can send you to try out before blowing any more excess cash.

If it works, you can buy it, if it don't, send it back.

dandywarhol · Post by **dandywarhol** » Tue Oct 20, 2009 8:59 pm

Idling won't be a turbo problem - take off the pipe into the intercooler to check - if it had oil running out of it then its the turbo. There's always some oil in the pipes though.

I'd a friends diesel bongo which burned oil at first and I reckoned it was from the valve stem seals. I flushed out the engine with Wynns engine flush, added a tin of wynns "seal swell" and a tin of Amtech Restore. After around 100 miles all the oil burning died down. Can't say it'll sort yours but worth trying...................

the jonesys · Post by **the jonesys** » Wed Oct 21, 2009 8:06 am

its deffo not the valve seals as everything in the head has been replaced i thought it may have been that too.
mister munkey i may take you up on the offer of trying your spare turbo and may i say with people on this site making offers like that to people you dont even know makes this a very special club to be in.the first thing i will do is take the pipes off to see if there is play in the turbo bearings.
what is an EGR valve is that the exaust return valve thingy i have read about? ahh! EGR exaust return valve if this is the problem i wouldnt have a clue even where to find it
i am quite surprised i have had so many problems with the bongo as its done so few miles guessing 50000 as there is no way of telling,the clocks are in mph the tacho is in kph and 30mph actually reads 36mph
i have spent a lot of money on this and still have a few jobs to do,i need two new batteries the fuel gauge is constantly under reading, its got big alloys which i had refurbished with very low profiles on and i have just noticed small splits all around the front ones like a stanly knife split which cost 150 quid each but i have already had so many good times in my bongo and will do whatever it takes to get it ready for next season and hopefully meet up with a few of you on here

Post by **francophile1947** » Wed Oct 21, 2009 12:01 pm

the jonesys wrote: its got big alloys which i had refurbished with very low profiles on and i have just noticed small splits all around the front ones like a stanly knife split

Very low profile tyres rarely have the correct load rating, which is a minimum of 92 front and 96 rear. It sounds like yours are below this and failing rapidly - best to get 96 all round before they blow and cause an accident.
There's lots on here if you do a search for the EGR valve - can't see why that would cause you to use oil though

rita · Post by **rita** » Wed Oct 21, 2009 12:11 pm

Hi,
Was it using oil prior to your engine repair.

What is the oil consumption.

Did you scrape all the carbon off the piston heads.

missfixit70 · Post by **missfixit70** » Wed Oct 21, 2009 12:28 pm

EGR FAQ here - http://www.igmaynard.co.uk/bongo/forum/ ... 43&t=14463. It's be as well to blank it anyway, but I don't think that would be your issue to be honest.

the jonesys · Post by **the jonesys** » Wed Oct 21, 2009 6:40 pm

thanks for all your replies folks but getting back to my main problem.
the reason we had the head done is because of this smoking problem and loss of coolant we did not know if the head was cracked or gasket gone,all the coolant problems are now resolved
the head was done started her up purrrrrfect for about ten minuites then it started to smoke profusely but cleared up when we took her for a run. we were due to go on the ireland ferry two days later so it had to do and no coolant problems but intermitant smoking.
it wasnt till we got back that we realised it was oil it was burning
so i topped it up to max level and we maybe have done 1000 miles in it and its on minimum.
i have just took the pipe off the turbo to check for play and according to my mechanic mate the amount of play in the bearings seems fine and there is only a slight oil patch in there which apparently is normal
he also said the egr valve wouldnt make it burn oil
i must admit i am getting a little frustrated with my bongo and may have to take it to the local diesel specialist but to be honest i prefer not to as a lot of garages seem to make extra work on purpose.example friend of mine took his corsa to tthe garage as there was a warning light lit they quoted 700 for a new computer thingy. he went to my mate and it turns out it was just the service light.
so if its not the turbo seals is the only other option the rings? but it seems unlikely if it was the rings wouldnt it smoke all the time?
mister munkey although my turbo looks okay i would still rather try another one before i start to think about rings rebore and crank refurb how much do you want for it?
cheers steve

missfixit70 · Post by **missfixit70** » Wed Oct 21, 2009 6:48 pm

Could it be 2 separate issues? Smoking could be down to egr, oil loss could be a leak elsewhere maybe? Worth whipping off the bottom tray, giving it all a damn good clean down with some gunk, then see if you've got a leak?

mister munkey · Post by **mister munkey** » Wed Oct 21, 2009 7:00 pm

PM sent Steve.

the jonesys · Post by **the jonesys** » Wed Oct 21, 2009 8:15 pm

missfixit70 wrote:Could it be 2 separate issues? Smoking could be down to egr, oil loss could be a leak elsewhere maybe? Worth whipping off the bottom tray, giving it all a damn good clean down with some gunk, then see if you've got a leak?

good idea thats my weekend project

Post by **francophile1947** » Wed Oct 21, 2009 8:19 pm

the jonesys wrote:good idea thats my weekend project

After checking your cracking tyres presumably

mikeonb4c · Post by **mikeonb4c** » Wed Oct 21, 2009 8:35 pm

If it has to go to a garage, at least youre not too far from Ian Taylor at Market Drayton. He and his mechanics know their Bongos and would be among the best at tracking down the source of the problem

the jonesys · Post by **the jonesys** » Thu Oct 22, 2009 9:58 pm

francophile1947 wrote:
the jonesys wrote: its got big alloys which i had refurbished with very low profiles on and i have just noticed small splits all around the front ones like a stanly knife split
Very low profile tyres rarely have the correct load rating, which is a minimum of 92 front and 96 rear. It sounds like yours are below this and failing rapidly - best to get 96 all round before they blow and cause an accident.
There's lots on here if you do a search for the EGR valve - can't see why that would cause you to use oil though

i went to the local formula one garage today which specialise in tyres to let them inspect them.
the load rating on all tyres is xtra load and rated at 97 he checked them out and said the plys had not been affected and they would be ok for a bit. there is a near perfect circle around the tyres almost like a knife cut and he put it down to underinflated tyres i was running them at 30 psi its a mistake i wont make again as bf goodrich replacements all around[ as they must be matching] is going to cost me £600 phew! after spending 12000 this year its going to ave to wait a while

Burning oil. And tyre pressures.

Burning oil. And tyre pressures.

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