Faulty garage repair

System

sevenhills wrote: »

Dont fuel tanks have a built in pressure, so you you take off the fuel cap you can hear a gush of air?
Will there be a light on your dashboard if faulty?

No to both of those.

NWOIHTS

sevenhills wrote: »

Dont fuel tanks have a built in pressure, so you you take off the fuel cap you can hear a gush of air?
Will there be a light on your dashboard if faulty?


https://www.youtube.com/watch?v=i0e-Uu4fXTs

They shouldn't build up pressure too much nor should they retain a vacuum as this would collapse the tank in on itself. As the engine sicks fuel the pressure drops and this is equalised by breather system.

LandyAndy

Fishmarket wrote: »

Unfortunately the problem is not adequately resolved. In order to fit the fuel pump in the first place I had to cut through the original screw cap. It is now secured with a large jubilee type clip holding it together. To fit a new cap easily a special tool is used. The dealership mechanic clearly did not have this available and neither do I.

To do the job properly without the special tool means that the fuel tank has to be removed from the car to give better access to the top of the tank. A garage would charge more than the car is worth to do this which
is why I either have to do the job myself or hope that the metal clip stays in place.

It's a banger with a bodged repair that seems to be effective. I would leave it as is and periodically check the clip.

angrycrow

It's a bodge and potentially dangerous one. Assuming the access to the fuel pump is under the back seat of the car this could easily get knocked off. It needs sorting properly by someone with the right tool for the job. Get it done and send him the bill as he has been offered the chance to rectify his bad workmanship and refused.

Muscle750

If it leaked when you filled the tank right to the top i imagine the seal isnt fitted correctly which in all fairness they can be a pain and the only way of telling if it leaks is to fill the tank .

Fishmarket

Thanks again to recent posters. A couple of days ago I discussed the problem with another garage owner who I know well through our interests in classic cars. He told me that there is no 'simple' test for this job other than filling the tank full of fuel. He also said that in his view the main dealer mechanic had not fully tightened the cap. So, the best test is to fill up the tank and check the work. Did the main dealer do this? No! Did the main dealer advise me to do this? No! Why is the average person supposed to know that this is a necessary step? Even when it was leaking I did not notice any petrol smell. With the metal cover plate over the tank in place it is not obvious that fuel is spilling out as you drive along. There seems to me to be something deeply wrong here in not advising the customer of this problem.......

tedted

what car is it as i dont know of any that you can secure an intank fuel pump with a jubilee clip

arcon5

YOU had to cut through the plastic cap to get to the fuel pump to have it replaced? No wonder it didn't seal when they replaced the pump. Why did you remove this in the first place instead of them?

Fishmarket

The cap is a plastic 'lid' open at the top. It's threaded and as it is screwed into place it seals the top of the fuel pump with a flexible washer underneath. It is a tight thread so it won't work loose. This also means that it can feel really tight if tightened by hand even though it is not fully tight. Some people use a mallet and peg to fully tighten it but this can easily break the plastic.

The reason I cut off the old cap was to fit a new fuel pump. I had a new cap and washer to secure the new pump but soon realised that I could not tighten it enough by hand. I did not try the mallet and peg method for fear of damaging the new cap. The old cap and washer still seal the pump and the metal clip keeps the cap tight.

I rather naively assumed that the dealers would have the special tool required to do this job. My mistake!

arcon5

So the old broken one still seals but the new one doesn't.... You sure you haven't got the wrong part?
I'm not exactly following though as you say the dealer replaced it and also say you took the old one off and new one on...So what did the dealer do?