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Discussion Starter · #1 ·
Just picked up the 1993 525i Touring today.
Had a good long drive home with no problems other than a steering wheel slightly off centre.

Parked it at the office and finished the day.
Showed the car off to several interested people throughout the day and didn't notice anything wrong.

Drove the car home and arrived into the driveway with a very strong petrol smell.
Lifted the bonnet - nice cleaned engine and couldn't spot anything obvious.
under the car also clean as a whistle and no damp or wetness. Smell stronest from under the bonnet anyway.

So - anywhere obvious to look?
Any problems particular to the E34/525i that might guide me to where the leak is?
 

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Just picked up the 1993 525i Touring today.
Had a good long drive home with no problems other than a steering wheel slightly off centre.

Parked it at the office and finished the day.
Showed the car off to several interested people throughout the day and didn't notice anything wrong.

Drove the car home and arrived into the driveway with a very strong petrol smell.
Lifted the bonnet - nice cleaned engine and couldn't spot anything obvious.
under the car also clean as a whistle and no damp or wetness. Smell stronest from under the bonnet anyway.

So - anywhere obvious to look?
Any problems particular to the E34/525i that might guide me to where the leak is?

Nope, no comon causes from what you are saying for that madel.

But I would check all the fuel lines in the engine bay and underneath the car..........petrol does have a strong smell but it also does evaporate pretty quick hence why yoy may not see anything obvious.

We would keep the car running and have a good look around to see if there is indeed any leaks.
 

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Discussion Starter · #3 ·
Nope, no comon causes from what you are saying for that madel.

But I would check all the fuel lines in the engine bay and underneath the car..........petrol does have a strong smell but it also does evaporate pretty quick hence why yoy may not see anything obvious.

We would keep the car running and have a good look around to see if there is indeed any leaks.
Thanks.
I let it cool down and then went and ran the motor and peered and prodded everywhere I could get to with a torch as well, but couldn't see anything at all. Smell not as bad so could have been residual or perhaps only under driving conditions.
Will try again tomorrow when I drive to work again.
 

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Just picked up the 1993 525i Touring today.
Had a good long drive home with no problems other than a steering wheel slightly off centre.

Parked it at the office and finished the day.
Showed the car off to several interested people throughout the day and didn't notice anything wrong.

Drove the car home and arrived into the driveway with a very strong petrol smell.
Lifted the bonnet - nice cleaned engine and couldn't spot anything obvious.
under the car also clean as a whistle and no damp or wetness. Smell stronest from under the bonnet anyway.

So - anywhere obvious to look?
Any problems particular to the E34/525i that might guide me to where the leak is?

First, start off by reading the posting rules please

http://www.bimmerforums.co.uk/forum/f69/bimmerforums-uk-forum-guidelines-t1603/
 

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Discussion Starter · #5 ·
Gee - thanks for the friendly reply!
I looked at the rules through your link. I can see that I didn't list the car details. Sorry. Anything else troubling you?

I just bought the car and was hoping for some friendly advice. I'm a car enthusiast, but not used to or very familiar to seeking help from forums - I'm a 55 year old retired mechanic.
Seems like a good medium to getting lots of help, but not if its going to be unfriendly and officious.
 

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Gee - thanks for the friendly reply!
I looked at the rules through your link. I can see that I didn't list the car details. Sorry. Anything else troubling you?

I just bought the car and was hoping for some friendly advice. I'm a car enthusiast, but not used to or very familiar to seeking help from forums - I'm a 55 year old retired mechanic.
Seems like a good medium to getting lots of help, but not if its going to be unfriendly and officious.

This is a real friendly site and you will get some great advice. The mods on here do a fantastic job of ensuring the rules are followed to make it easier for members, new and old to search the site for similar problems.

It's not officious, you have not been singled out, all posts not marked up in the recommended fashion will be picked up.

Good luck, someone on here will help you no doubt, and welcome !
 

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Discussion Starter · #8 ·
Owe you $50

The most common place for leaks are the two inch piece of hose near the bulkhead where the fuel line goes into the fuel rail. Id put £50 on it being that.

check number 17 here

http://www.realoem.com/bmw/showparts.do?model=CB32&mospid=47444&btnr=13_0369&hg=13&fg=15
Spot on - all hail the conquering hero.
It was actually the other end of the fuel rail (at the fan end) but I'm still counting it as a first case diagnosis as I wouldn't have looked there otherwise.

It wasn't damp to see but when I removed the cover and started her up, there was just a wettening on the end of the pipe only - no spray, no dribbling.
The clamp looked very tight but when checked, it had slipped over the teeth and went loose again.

Replaced with a new clamp and all is well. The pipe does seem bloated though and pulls in a lot around the clamp.
It appears to have two layers - the inner one was still very tight over the nipple but the outer softer casing appears to have swelled and parted with the inner.
As the inner is the pressure and the outer is to prevent chafing, I feel its safe to drive until I get some new hose and replace it (and any others I deem in the same condition).
Looks like a bit of fun getting to some of them.

Thank again.
 

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Gee - thanks for the friendly reply!
I looked at the rules through your link. I can see that I didn't list the car details. Sorry. Anything else troubling you?

I just bought the car and was hoping for some friendly advice. I'm a car enthusiast, but not used to or very familiar to seeking help from forums - I'm a 55 year old retired mechanic.
Seems like a good medium to getting lots of help, but not if its going to be unfriendly and officious.
:hihi Whilst it comes across as being very blunt you need to understand how many times this crops up:rofl

This is a very friendly forum:thumbsup

Boostist is the Administrator of the site and spends money from his own pocket to fund it and see's absolutely nothing in return.

The reason we like to keep all the thread titles and request as much information as possible is so that it's easier to use the "search" function (which is a really good tool). It also looks more professional than a lot of the other sites that we are in competition with. Also it helps the likes of myself target threads that I know the answers to first and then go back through and sift through the ones where I may be able to answer or assist a prompt from another member:thumbsup

Welcome to the forum:D

It's good to know you are a mechanic as it means you've probably checked everything that is relevant and all is in order:cool

One question for you, does the smell seem to be stronger from around the fuse box area? My M3 engine has a fuel evaporation cannister that is located below it and perhaps this may be the odour you are getting???
 

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Discussion Starter · #12 ·
:hihi Whilst it comes across as being very blunt you need to understand how many times this crops up:rofl

This is a very friendly forum:thumbsup

Boostist is the Administrator of the site and spends money from his own pocket to fund it and see's absolutely nothing in return.

The reason we like to keep all the thread titles and request as much information as possible is so that it's easier to use the "search" function (which is a really good tool). It also looks more professional than a lot of the other sites that we are in competition with. Also it helps the likes of myself target threads that I know the answers to first and then go back through and sift through the ones where I may be able to answer or assist a prompt from another member:thumbsup

Welcome to the forum:D

It's good to know you are a mechanic as it means you've probably checked everything that is relevant and all is in order:cool

One question for you, does the smell seem to be stronger from around the fuse box area? My M3 engine has a fuel evaporation cannister that is located below it and perhaps this may be the odour you are getting???
My sincere apologies to Boostist then.
I do feel that a nice explanation such as yours would have been a friendlier approach especially if he'd like to encourage contributors to stay.
However, he lays down the rules and wasn't just a crouchy member - so I acknowledge that now.

I fixed the fuel problem.
A nice chap in a different BMW forum suggested a couple of hoses to inspect and sure enough, one was weaping under pressure as the clamp had been overtightened and stripped.

Your suggestion wasn't without merit though as my fuel tank was very very low and its been terrifically hot here and I wondered perhaps if the tank had pressurised and forced vapour from the canister or some other pollution device involved with vapours as I just couldn't find any wet fuel initially.

All fixed now though.
 

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My sincere apologies to Boostist then.
I do feel that a nice explanation such as yours would have been a friendlier approach especially if he'd like to encourage contributors to stay.
However, he lays down the rules and wasn't just a crouchy member - so I acknowledge that now.

I fixed the fuel problem.
A nice chap in a different BMW forum suggested a couple of hoses to inspect and sure enough, one was weaping under pressure as the clamp had been overtightened and stripped.

Your suggestion wasn't without merit though as my fuel tank was very very low and its been terrifically hot here and I wondered perhaps if the tank had pressurised and forced vapour from the canister or some other pollution device involved with vapours as I just couldn't find any wet fuel initially.

All fixed now though.
Excellent News, Glad you got it fixed:thumbsup

I will now edit the title to display (FIXED)

J
ust noticed your location:hihi

Sydney Australia. We have snow here today and I've managed to blag a snow day:cool
:D
 

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My sincere apologies to Boostist then.
I do feel that a nice explanation such as yours would have been a friendlier approach especially if he'd like to encourage contributors to stay.
However, he lays down the rules and wasn't just a crouchy member - so I acknowledge that now.

I fixed the fuel problem.
A nice chap in a different BMW forum suggested a couple of hoses to inspect and sure enough, one was weaping under pressure as the clamp had been overtightened and stripped.

Your suggestion wasn't without merit though as my fuel tank was very very low and its been terrifically hot here and I wondered perhaps if the tank had pressurised and forced vapour from the canister or some other pollution device involved with vapours as I just couldn't find any wet fuel initially.

All fixed now though.
Sorry, as A20 RYM says, it comes up so often that I lose patience and dont have time to type an essay explaining it each time it crops up :hihi

Also, you clicked 2 tick boxes during sign up saying you had read the posting guide?

Clearly this wasnt the case, as it isnt for many others... but a usefully titled thread saves me or the hard working mods time altering it, and also ,means the forum search function actually works..

and so if someone searches for e34 fuel leak

they will get relevant threads :)

Hope it didnt put you off...we're not all bad :D (only me :embarrassed)
 

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My sincere apologies to Boostist then.
I do feel that a nice explanation such as yours would have been a friendlier approach especially if he'd like to encourage contributors to stay.
However, he lays down the rules and wasn't just a crouchy member - so I acknowledge that now.

I fixed the fuel problem.
A nice chap in a different BMW forum suggested a couple of hoses to inspect and sure enough, one was weaping under pressure as the clamp had been overtightened and stripped.

Your suggestion wasn't without merit though as my fuel tank was very very low and its been terrifically hot here and I wondered perhaps if the tank had pressurised and forced vapour from the canister or some other pollution device involved with vapours as I just couldn't find any wet fuel initially.

All fixed now though.

Im glad it has been sorted, If you do get any more problems, please feel free to post them here.... :thumbsup
 

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1994 E34 518i

I have a similar problem but I know the cause of it. The cap that attaches the pipes to the fuel pump has cracked and no matter who I ask don't have a clue what it's called. It didn't come with the fuel pump I have just had fitted but I'm losing fuel at a rapid rate and I wondered if anyone has a idea (a) what it is called? (b) where I can get one from because I have even been to BMW specialists in my town and they are clueless and scrap yards are demanding the whole unit including the pump which I already have!
 

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Discussion Starter · #17 ·
I have a similar problem but I know the cause of it. The cap that attaches the pipes to the fuel pump has cracked and no matter who I ask don't have a clue what it's called. It didn't come with the fuel pump I have just had fitted but I'm losing fuel at a rapid rate and I wondered if anyone has a idea (a) what it is called? (b) where I can get one from because I have even been to BMW specialists in my town and they are clueless and scrap yards are demanding the whole unit including the pump which I already have!
Hi Bigfella.
I actually still have a fuel smell around the car but only for a day or two after I fill up. I also suspected this cap but there were no fuel stains around it and no sign of leakage.
I ended up taking the inside fender off the rear tyre well and inspecting all the hoses around the filler to the tank etc but couldn't find anything obvious.
The BMW mechanic I go to told me it wasn't uncommon for the plastic tanks to get a small split over on the LH-side up at the top, but he told me after inspection that mine was okay.
He suspects the the gasket around this cap. I haven't done anything about it as yet as it's only there if I do a complete top up.

I tried to find the name of this plastic cap also but both the online parts guide and the Bently manual only show it as a metal cap that bolts down whether its on a plastic tank or metal tank - bit strange.

Does the crack on your cap open up as you screw it down, or is it consistant?
If its a consistant crack, there are a number of fuel proof epoxy glues and fillers you could try. They are mostly two part and usually a putty which you knead and then push into the crack to set.
You might want to gently grind the length of the crack out a bit halfway through the plastic to give the glue/putty more contact area to adhere to.

Even if the crack opens up on tightening, it might be worth trying since your having such a hard time locating a replacement.
Get the cap screwed down into position and then knead the putty into it as best as possible.
 
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