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Oil Weeping From Pipe Under Battery


Roker
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1.8 Avensis. 46,000 mile. I have noticed oil weeping from a pipe under the Battery and dripping onto the under cover. I haven’t a clue what the pipe is for, it’s steel about 10mm dia with corrugated plastic over it and runs from the bulkhead to the radiator area via a few twist and turns.

Has anyone any idea what it’s for and is it serious? I phone the locally Toyota dealer who said I should be concerned but could not tell what it is, a bit of a contradiction.

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1.8 Avensis. 46,000 mile. I have noticed oil weeping from a pipe under the battery and dripping onto the under cover. I haven’t a clue what the pipe is for, it’s steel about 10mm dia with corrugated plastic over it and runs from the bulkhead to the radiator area via a few twist and turns.

Has anyone any idea what it’s for and is it serious? I phone the locally Toyota dealer who said I should be concerned but could not tell what it is, a bit of a contradiction.

Sounds very much like an air conditioning pipe, from which is leaking either it's own special oil, or air con refrigerant itself, more than likely a bit of both. I am no expert, but needs attention, and have you noticed a drop-off in air con performance in the recent weather?

Big KEV.

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1.8 Avensis. 46,000 mile. I have noticed oil weeping from a pipe under the battery and dripping onto the under cover. I haven’t a clue what the pipe is for, it’s steel about 10mm dia with corrugated plastic over it and runs from the bulkhead to the radiator area via a few twist and turns.

Has anyone any idea what it’s for and is it serious? I phone the locally Toyota dealer who said I should be concerned but could not tell what it is, a bit of a contradiction.

Sounds very much like an air conditioning pipe, from which is leaking either it's own special oil, or air con refrigerant itself, more than likely a bit of both. I am no expert, but needs attention, and have you noticed a drop-off in air con performance in the recent weather?

Big KEV.

I had the air condition service about 2 weeks ago, could this be residue from topping up?

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Oil leaking from anywhere in the car should be taken care of.

It's bad for the environment and it means that you're losing lubricant from where it may be needed badly.

For instance the aircon system.

There's not much oil in it, so a leakage may become very expensive soon.

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Oil leaking from anywhere in the car should be taken care of.

It's bad for the environment and it means that you're losing lubricant from where it may be needed badly.

For instance the aircon system.

There's not much oil in it, so a leakage may become very expensive soon.

I removed the plastic cover from the pipe, dried all of the oil off, there presently does not seem to be a leak, the air con is working Ok so at present I am puzzled. I note from other threads that this pipe has given trouble, it could be a common problem, probably another Toyota design job.

Why cannot the pipes be joined, saving a lot of work? I have worked on Hydraulic fittings that will take 6,000 PSI.

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In that case, you know that high pressure pipes, fittings, seals and joints occasionally do fail.

Also in car aircon systems, with a pressure of "only" 300 PSI and thin pipes to keep the weight down, these pipes have a tendency to devellop microscopic cracks over time, due to vibrations.

I've had that in 2 cars, after between 8 and 10 years.

An aircon specialist will find the leak(s) in no time, using an UV-lamp.

The only thing you can do is replace the leaking pipe.

These pipes are expensive, but cheap compared to when you wait too long. :wacko:

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In that case, you know that high pressure pipes, fittings, seals and joints occasionally do fail.

Also in car aircon systems, with a pressure of "only" 300 PSI and thin pipes to keep the weight down, these pipes have a tendency to devellop microscopic cracks over time, due to vibrations.

I've had that in 2 cars, after between 8 and 10 years.

An aircon specialist will find the leak(s) in no time, using an UV-lamp.

The only thing you can do is replace the leaking pipe.

These pipes are expensive, but cheap compared to when you wait too long. :wacko:

I bought Toyota for their quality, there’s something fundamentally wrong when they cannot make a piece of pipe that will not leak, I hope they make the brake pipes better than this. €200 for a peice of pipe before fitting, crazy

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In that case, you know that high pressure pipes, fittings, seals and joints occasionally do fail.

Also in car aircon systems, with a pressure of "only" 300 PSI and thin pipes to keep the weight down, these pipes have a tendency to devellop microscopic cracks over time, due to vibrations.

I've had that in 2 cars, after between 8 and 10 years.

An aircon specialist will find the leak(s) in no time, using an UV-lamp.

The only thing you can do is replace the leaking pipe.

These pipes are expensive, but cheap compared to when you wait too long. :wacko:

I bought Toyota for their quality, there’s something fundamentally wrong when they cannot make a piece of pipe that will not leak, I hope they make the brake pipes better than this. €200 for a peice of pipe before fitting, crazy

The Aircon guy could not see a leak with his UV light, but I put a mirror underneath the pipe today and I can see a pinhole leaking. The manufactured pipe is terrible quality, I can also see where the bending process left marks in the side of the pipe. I wonder why I need a new pipe at €200 + fitting. why can they not cut and put a compression fitting in place? it's as if Toyota are making money from spares on this.

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In that case, you know that high pressure pipes, fittings, seals and joints occasionally do fail.

Also in car aircon systems, with a pressure of "only" 300 PSI and thin pipes to keep the weight down, these pipes have a tendency to devellop microscopic cracks over time, due to vibrations.

I've had that in 2 cars, after between 8 and 10 years.

An aircon specialist will find the leak(s) in no time, using an UV-lamp.

The only thing you can do is replace the leaking pipe.

These pipes are expensive, but cheap compared to when you wait too long. :wacko:

I bought Toyota for their quality, there’s something fundamentally wrong when they cannot make a piece of pipe that will not leak, I hope they make the brake pipes better than this. €200 for a peice of pipe before fitting, crazy

The Aircon guy could not see a leak with his UV light, but I put a mirror underneath the pipe today and I can see a pinhole leaking. The manufactured pipe is terriblr quality, I can also see where the bending process left marks in the pipe. I wounder why I need a new pipe at €200 + fitting. why can they not cut and put a fiiting in place?

Hi mate, look up a local hydraulic pipe/hose supplier and get them to make you something to sort it, i've worked on fork trucks for years so i know it can be done.;)

Best of luck, Pete.

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hi roker,

i have the exact same leak in the same place om my 53 plate 1.8 vvti, but my aircon is not coming out cold at all, have you fixed your one yet? if so could you tell me how much it cost, cheers.

mark.

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hi roker,

i have the exact same leak in the same place om my 53 plate 1.8 vvti, but my aircon is not coming out cold at all, have you fixed your one yet? if so could you tell me how much it cost, cheers.

mark.

I bouhgt the fittings to fix it, 8 mm twin furrel Swagelock, (these will take up to about 6,000psi)

Unfortunately I am running out of time because I am driving from Cork to Manchester area next week and wanted it fixed. The local garage replaced the pipe and was no cheaper than Mr T, he charged €405. I was going to try and repair the old pipe with the fittings but they wrecked it getting it out, so I would not have been able to fix it in any case.

I had a quote in Rochdale from Toyota dealers for £261.57 Including VAT and Fitting.

This is a Toyota fault, the pipe appears to be stressed at the bends.

I have notices that the radiator fan only runs at slow speed since having it fixed, possibly the system is running more efficiently now, is this normal?

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hi roker,

thanks for the info, i managed to fix the leak myself with a durafix aluminum welding rod, i got kwik-fit to remove the pag oil for free as i promissed to take it back for a full recharge, done the weld sunday morning and took it back to them in the afternoon and got it recharged £49, and now its fixed :D , £11.95 for 5 durafix welding rods on the net.

mark.

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A lot cheaper than my fix. Did you have to take the pipe off? did the residue oil in the pipe not affect the welding?

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A lot cheaper than my fix. Did you have to take the pipe off? did the residue oil in the pipe not affect the welding?

hi roker,

no i left the pipe in place and used a solder mat to protect the electricals, and i used a cocktail stick to keep the valve open incase of a build up of pressure.

mark.

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Hi,

It would be interesting to hear in a couple of months, if that's a permanent fix. :huh:

Do keep us informed.

I had a look at their website, interesting stuff, hadn't heard about it.

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