Jump to content

Recommended Posts

Avery lucky escape.

As a luverly weekend promised i got the 5 out saturday morning but strugled to start. When i reversed out of the garage there was a large pool of fluid on the floor.

Checked and it was petrol . Got under the car and it was the failure of the pipe that connects the PRV to the metering unit.151229 in the moss book.

Now my PRV has been moved from the chassis into the boot the pipe connecting the PRV to the original union was of the flexible type metal braided with a rubber outer. A victim of the new fuel type i assume. Had changed the low pressure pipes for the new spec inside the boot but didn't give that one a thought.

So 105 psi spray 

Lucky i was at home i guess and very lucky not to have had a fire ball.

I have had my 5 for 45 years so yes old spec pipe.

PLEASE CHECK YOURS OUT.

Roy

Link to post
Share on other sites
3 hours ago, roy53 said:

Avery lucky escape.

As a luverly weekend promised i got the 5 out saturday morning but strugled to start. When i reversed out of the garage there was a large pool of fluid on the floor.

Checked and it was petrol . Got under the car and it was the failure of the pipe that connects the PRV to the metering unit.151229 in the moss book.

Now my PRV has been moved from the chassis into the boot the pipe connecting the PRV to the original union was of the flexible type metal braided with a rubber outer. A victim of the new fuel type i assume. Had changed the low pressure pipes for the new spec inside the boot but didn't give that one a thought.

So 105 psi spray 

Lucky i was at home i guess and very lucky not to have had a fire ball.

I have had my 5 for 45 years so yes old spec pipe.

PLEASE CHECK YOURS OUT.

Roy

This is not good and with E10 on its way something has to be done ASAP 

Link to post
Share on other sites

Hi Roy,

can you share a picture of the failed hose?

Are the plies dis-bonded (hope that’s the correct word) from each other? Was the hose ever replaced in your 45 years ownership?

My old hoses were very hard, although they had not seen fresh petrol, let alone E5/10 (the car was de-commissioned many years before I bought it in 2015).

Waldi

Link to post
Share on other sites
6 hours ago, Peter V W said:

Roy,

the failed part should be a pipe not a hose.

Peter

I agree and have fitted the solid pipe. 
This is what was offered at the time.

 

Fitting the new solid one was a pain with all the bends.

Next to change the flexible pipe at the metering unit.  But have been reading the posts on these in the TR6 section 

 

Roy

Link to post
Share on other sites

Hi Roy/All,

Thanks for the warning Roy.

I have checked the pipe on my TR5 going from the PRV forward to the short braided flexible pipe that connects to the MU. The main pipe appears to be copper or a copper based alloy and is in good condition. On another matter, I have a petrol smell in the boot pretty well all of the time and have checked all of the connections and the hoses without finding a leak. A previous owner did a lot of work on this, including replacing the tank filler neck hose and fuel level sender gasket. I am suspicious of the flexible pipe that goes from the Bosch fuel pump to the PRV. It doesn't feel very substantial and I wonder if ethanol is leaching through it. I found a replacement pipe on the Rimmer Bros website (TGK125Q3) but it looks identical to the one I have fitted. Has anybody got any thoughts or advice here?

Thanks,

Denis

Link to post
Share on other sites

Hi Roger, 

Thanks for your reply. The hoses look pretty new. They are black rubber and have a white concentric reinforcement running through them.  I can't access the car right now to see if there is any writing on them but what would you recommend? The last but one owner did a lot of work to try to stop the petrol smell and he concluded that the odour was coming through the pipes.

Thanks,

Denis

Link to post
Share on other sites

Hello Dennis

 

i replaced all my non pressure hoses as per Stuarts recommendation.

The pressured pipe from pump to PRV is from Revington as i have fitted their PRV conversion which moved it from the chassis [ near the exhaust ] to the boot as TR6.

My issue was that a flexible pipe had been used, PRV to pipe connection on the chassis had failed. Hopefully this may have been where my fuel smells came from. Have been chasing these for years.

What worries me is the flexible pipe connected to the metering unit which i know is over 50 years old so old spec. Where do i get a replacement for this to update spec.

Roy

Link to post
Share on other sites

Roger,

Thanks for the link to Stuart's post. Does anyone know of a source for the R14 hose? I did a quick Google but not much came up.

Thanks,

Denis

Link to post
Share on other sites

Dont also rule out the drain plug in the fuel tank. its usually a fibre washer, difficult to get at from underneath, easier to take the tank out.

John

Link to post
Share on other sites
2 hours ago, DenisMc said:

Roger,

Thanks for the link to Stuart's post. Does anyone know of a source for the R14 hose? I did a quick Google but not much came up.

Thanks,

Denis

Check out the TR 6 Forum, but it looks like there has been a rush on buying the hose...

Link to post
Share on other sites
On 7/30/2021 at 6:45 PM, DenisMc said:

Roger,

Thanks for the link to Stuart's post. Does anyone know of a source for the R14 hose? I did a quick Google but not much came up.

Thanks,

Denis

Denis,

I would suggest using readily available R9 Vs R14.  Both have a permeability rating of 15 g/m²/day, the key difference is that R9 is rated at 100PSI, whereas R14 is a lower pressure pipe, rated at 50PSI, not suited for injection usage.

I have used R9 throughout my vehicle and petrol smells in the boot have.............. gone!!!

 

Supplier who I used was Think Automotive in Ashford, Middlesex.  I have no affiliation with them, but they know their hoses and fittings.

Good luck

Josh

Link to post
Share on other sites
15 hours ago, Josh said:

Denis,

I would suggest using readily available R9 Vs R14.  Both have a permeability rating of 15 g/m²/day, the key difference is that R9 is rated at 100PSI, whereas R14 is a lower pressure pipe, rated at 50PSI, not suited for injection usage.

 

Good luck

Josh

You can get R14 with suitable pressure range for PI. https://www.gates.com/gb/en/search.p.4219-000000-000003.v.4219-06038.html

Stuart.

Link to post
Share on other sites

Thank you all very much for your helpful suggestions. When I get the time I shall look at the current low pressure hoses to see if there is a specification marked on them. That will enable me to hopefully establish what specification the current hoses are. I shall also check the tank drain!

Regards,

Denis

Link to post
Share on other sites

Hi All,

Regarding the smell of petrol in the boot I managed to have a look at my TR5 this afternoon. I took some photos of the fuel hoses, which are attached. The hose from the tank outlet to the Bosch fuel filter appears to be to SAE J30 R6. The front of the hose is embossed 2011 and 09, which is probably the date of manufacture, whilst if you look at the photo of the rear of the hose taken using a mirror it is marked SAE J30 R6. You have to read the backwards image I'm afraid, but it is possible! The other hose shown is from the PRV back to the top of the tank. The tank is a non standard stainless steel tank which has a connection for this on the top. In photo 1 you can see that is is supposedly suitable for Leaded and Unleaded petrol and in photo 2, 938 - 10 is marked. I suspect that this hose is not to R9 specification either. Therefore, going by the useful advice you have given me it would seem worth changing both hoses to the R9 specification to try to eliminate the petrol smell. 

Regards,

Denis

Hose, tank to fuel filter.jpg

Hose, tank to fuel filter rear view.jpg

Hose, PRV to tank 1.jpg

Hose, PRV to tank 2.jpg

Edited by DenisMc
Link to post
Share on other sites

Peace of mind. Change to what Stuart has recommended. A few pounds to protect a valuable car makes sense to me, especially as it’s an easy thing to do.

Mike

Link to post
Share on other sites

On the subject of fuel smell, I don't know if the TR5 has a similar problem to the TR6, but on the '6 any non-standard exhausts (e.g. "wheelbarrow) can cause petrol smells. May be caused by the flat tail on the '6, but worth thinking about if you have a sports exhaust.

John

Link to post
Share on other sites
20 hours ago, DenisMc said:

Hi All,

Regarding the smell of petrol in the boot I managed to have a look at my TR5 this afternoon. I took some photos of the fuel hoses, which are attached. The hose from the tank outlet to the Bosch fuel filter appears to be to SAE J30 R6. The front of the hose is embossed 2011 and 09, which is probably the date of manufacture, whilst if you look at the photo of the rear of the hose taken using a mirror it is marked SAE J30 R6. You have to read the backwards image I'm afraid, but it is possible! The other hose shown is from the PRV back to the top of the tank. The tank is a non standard stainless steel tank which has a connection for this on the top. In photo 1 you can see that is is supposedly suitable for Leaded and Unleaded petrol and in photo 2, 938 - 10 is marked. I suspect that this hose is not to R9 specification either. Therefore, going by the useful advice you have given me it would seem worth changing both hoses to the R9 specification to try to eliminate the petrol smell. 

Regards,

Denis

Hose, tank to fuel filter.jpg

Hose, tank to fuel filter rear view.jpg

Hose, PRV to tank 1.jpg

Hose, PRV to tank 2.jpg

If your hose says: “Suitable for unleaded fuel”, I would replace it. The hose that became soft on my car had that also printed on the hose and was R6 spec. 
Waldi

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...

Important Information

Please familiarise yourself with our Terms and Conditions. By using this site, you agree to the following: Terms of Use.