dripping oil

Technical questions and answers about the Mazda Bongo

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Simon Jones
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Re: dripping oil

Post by Simon Jones » Sun Jan 29, 2012 7:34 pm

lancyman wrote:Is a rocker gasket cover job serious eg expensive?
Checked oil level and it was down low on the dipstick. However,
However oil reservoir looked fine?
I think you may be getting confused with the power steering reservoir which is on the drivers side at the front of the inspection opening.
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lancyman
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Re: dripping oil

Post by lancyman » Sun Jan 29, 2012 7:46 pm

I am right in thinking oil reservoir us under the bonnet right. Think it might be this to rocker head gasket thing.
Does it get affected by cold weather?
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Re: dripping oil

Post by jaylee » Sun Jan 29, 2012 8:02 pm

Simon Jones wrote:
lancyman wrote:Is a rocker gasket cover job serious eg expensive?
Checked oil level and it was down low on the dipstick. However,
However oil reservoir looked fine?
I think you may be getting confused with the power steering reservoir which is on the drivers side at the front of the inspection opening.
lancyman wrote:I am right in thinking oil reservoir us under the bonnet right. Think it might be this to rocker head gasket thing.
Does it get affected by cold weather?
Power steering fluid is what you see in this position highlighted in the red.....
& the one similar under the drivers seat to the front of the air filter housing is for the brake fluid....

The aforementioned stuff has nothing to do with the engine oil level...
But the dipstick under the passenger seat does.. Check level when engine is cold..!!
Last edited by jaylee on Sun Jan 29, 2012 8:09 pm, edited 1 time in total.
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Re: dripping oil

Post by Driver+Passengers » Sun Jan 29, 2012 8:06 pm

lancyman wrote:I am right in thinking oil reservoir us under the bonnet right. Think it might be this to rocker head gasket thing.
Does it get affected by cold weather?
The oil settles in the sump at the bottom of the engine - the dipstick dips into the oil down there and you won't see oil anywhere else. All other reservoirs will be other fluids (eg brake, power steering and coolant).

My understanding of the Bongo engine is slight but an oil leak this high up probably is the rocker head gasket thing. Can you post another picture with a slightly wider angle? (ie show us more...) You might be able to see oil pooling on the mm or two surface of the cylinder head below the rocker cover.
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dandywarhol
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Re: dripping oil

Post by dandywarhol » Sun Jan 29, 2012 8:16 pm

horus01 wrote:don't know if it helps-but did you buy private or dealer? When i bought mine from dealer he explained that even private sellers have to provide so much warranty per thousand spent-may be worth looking into.
Sorry Horus - that dealer's talking through a hole in his ar$e

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Re: dripping oil

Post by jaylee » Sun Jan 29, 2012 8:28 pm

dandywarhol wrote:
horus01 wrote:don't know if it helps-but did you buy private or dealer? When i bought mine from dealer he explained that even private sellers have to provide so much warranty per thousand spent-may be worth looking into.
Sorry Horus - that dealer's talking through a hole in his ar$e

Caviat emptor and all that when buying privately
Sorry Dandy...?!! :wink:

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lancyman
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Re: dripping oil

Post by lancyman » Sun Jan 29, 2012 9:05 pm

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Re: dripping oil

Post by jaylee » Sun Jan 29, 2012 9:11 pm

Isn't that something to do with the EGR..?? :idea: :arrow:
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lancyman
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Re: dripping oil

Post by lancyman » Sun Jan 29, 2012 9:16 pm

i thought this might be it. If you look at the nut closest to the front you can see that the bit
underneath it is actually sticking out a bit. On closer inspection the nut isn't actually going
through the piece below and i can see the hole it's meant to go through. What is this, and will
it make a difference to my problem?
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Re: dripping oil

Post by Simon Jones » Sun Jan 29, 2012 10:12 pm

It's part of the EGR where it meets the inlet manifold and is a common place to leak. The bolt on the left does not look original so I suspect the thread may have stripped in the aluminium elbow so is no longer making a proper seal. You could either block the EGR (search forum for info), get the hole re-threaded or just source a replacement part. I don't think you have too much to worry about :)
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lancyman
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Re: dripping oil

Post by lancyman » Sun Jan 29, 2012 10:18 pm

Not sure of thats where the oil is coming from. Sounds worth checking out though. Thanks to everyone so far.
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Re: dripping oil

Post by Northern Bongolow » Sun Jan 29, 2012 10:28 pm

.
mentaliss wrote:
lancyman wrote:Leak seems to be coming from quite high up. Hard to tell. One day of ownership and it all goes wrong.
Open up the drivers side engine compartment look to the front of the side of the engine around the camshaft chain cover see if its wet if it is it will be the sensor cover gasket (3 bolts)
this is where the oil is coming from, most diesels leak here. =D> =D> =D> .

the egr bolts loose will let air in or the turbo-ed air out, is it running ok ???

more worrying is the presence of a jubilee clip on the top hose, this will always come slack (expansion and contraction) i would say thats the most important to sort :shock: :shock:
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Re: dripping oil

Post by lancyman » Sun Jan 29, 2012 10:57 pm

Seems to be running ok. What is the issue with the clip? What can i do about it?
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Re: dripping oil

Post by Northern Bongolow » Sun Jan 29, 2012 11:14 pm

jubilee clips in my opinion should never be fitted to a bongo.
they have a constant diameter when tightened, and cannot (give) to allow for expansion and contraction.
if you look at the gen mazda clip this allows for temp changes as it is a expandable clip.
some say they are ok on plastic stubs like rad conections, but i dont.
the clip will stretch when the engine gets hot, when it cools the stub shrinks but the pipe has been compressed this gives a gap for air to get into the system, the pipe may uncompress and close the gap, but in the meantime a tad of air has got in,repeat,repeat.
if you go out now and check that clip you will get at least one turn on it to tighten it, then again tomorrow, until the clip fails or the pipe is crushed flat.
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Re: dripping oil

Post by Driver+Passengers » Sun Jan 29, 2012 11:52 pm

lancyman wrote: Image

Image
Did you clean off the elbow in the second picture before taking the photo - it doesn't look dirty enough to me to be the sole cause of the apparant amount of wet oil (I think) I can see in the first - hard to tell and I've not seen enough Bongos to really know or know how the oil blows when your driving. Could well still be worth nipping up the rocker cover, I dunno. (PS this might help - see part(s) 10-200 here) Agree that you shouldn't have too much to worry about though, regarding this oily leak at least! :wink: [-o<

As far as my van is concerned, I don't even know if I was leaking from the rocker cover or not, nor if I was, whether a simple nip up wouldn't have worked for me. But despite replacing that rocker cover gasket anyway, I believe most of my oil was coming/spraying from the (loose) bolt in the very top-right in the next picture just behind the black connector - you can see it's sticking up a bit. Worth a quick check with your fingers that that bolt is not loose enough to wiggle.

Image
(PS - please excuse the jubilee clip present here)
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