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Old 28th April 2021, 12:24   #61
Shuriken_57
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Quote:
Originally Posted by T-Cut View Post
You have to wonder why someone (clearly not Brahim) thought it necessary to place cable ties to act as 'security seals' on both the fuel pump and the filter modules?







Brahim's photos clearly indicate something has been done in the tank and possibly the cause of the seemingly uncontrolled fuel delivery.


If indeed liquid fuel is getting into the IM via the purge valve, then there's some serious problems with the tank plumbing. So I think I'd start focussing on what on Earth is going on in the tank.


TC
Hi, I thought the cable clamp was original. It’s starting to worry me a lot if something Has been changed in the tank.

When I bought the vehicle, I had no worries. Then, there was the problem of hot start and then the engine cuts when the tank is filled to the quarter.
I think all these problems are related.

I should be getting my fuel rail seals soon and I would be testing what you all advised me to do.

Last edited by Shuriken_57; 28th April 2021 at 12:41..
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Old 1st May 2021, 08:54   #62
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Hello, gentlemen, I have news.

I changed my fuel rail seals but the problem wasn't solved.
I bought a second-hand fuel rail and now it’s not leaking(i put back my original fuel injectors).

I noticed before the fuel was running out of the accumulator vaccum pipe( number 4 on the next picture).
https://www.the75andztclub.co.uk/for...mg&imgid=29128

Only, the idle is not stable, it is higher(850 900 rpm ).
I 've always my hot starting problem.

The fuel was flowing directly into the throttle body through the hose. I don’t think it’s my fuel pump because I managed to drive in reserve and it didn’t stall.

Excuse my English, I am not fluent in the language.
Thank you.

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Old 1st May 2021, 09:30   #63
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The fuel was flowing directly into the throttle body through the hose.
That would explain how fuel was getting into your throttle body, well done!
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Old 1st May 2021, 09:34   #64
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Hello Brahim and thanks for the news.
Quote:
Originally Posted by Shuriken_57 View Post
Only, the idle is not stable, it is higher(850 900 rpm ).
It should be between 700 and 800 rpm. There's still something wrong.
Quote:
Originally Posted by Shuriken_57 View Post
The fuel was flowing directly into the throttle body through the hose.
Which hose please Brahim? Can you post another diagram to show us?

Simon
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Old 1st May 2021, 10:02   #65
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Hello Brahim and thanks for the news.

It should be between 700 and 800 rpm. There's still something wrong.

Which hose please Brahim? Can you post another diagram to show us?

Simon
Hello Simon. This the hose number 19 on the next picture.

https://www.the75andztclub.co.uk/for...mg&imgid=29130

This is the fuel hose of the Fuel regulator to the manifold.

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Old 1st May 2021, 13:44   #66
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Hello Simon. This the hose number 19 on the next picture.

https://www.the75andztclub.co.uk/for...mg&imgid=29130

This is the fuel hose of the Fuel regulator to the manifold.
Thanks Brahim. Hose number 19 supplies the fuel rail pressure regulator with vacuum. As the regulator was faulty, petrol was flowing through it and back into the throttle body. You had us all scratching our heads with this one!

So is your engine running properly now? Any outstanding problems?

Simon
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Old 1st May 2021, 15:30   #67
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Thanks Brahim. Hose number 19 supplies the fuel rail pressure regulator with vacuum. As the regulator was faulty, petrol was flowing through it and back into the throttle body. You had us all scratching our heads with this one!

So is your engine running properly now? Any outstanding problems?

Simon
The engine running properly on the road, but the idle isn't good, it's not smooth.The engine is a little bit noisy.
And my hot starting problem is still there.
I'll drive tomorrow and i'll check any problems.

By the way, what is the role of the fuel rail pressure regulator? Is that why my engine stalled several times?

Thanks you for your help.

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Old 1st May 2021, 17:20   #68
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The engine running properly on the road, but the idle isn't good, it's not smooth.The engine is a little bit noisy.
I would change the oil now, it is most likely fuel diluted after all the excess petrol in the manifold has been drawn into the engine and will have got past the piston rings into the crankcase.
That may be the cause of the engine idling roughly (drawing fuel vapour into the cylinders via the breather system) and the excess noise due to the over thin oil.
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Old 2nd May 2021, 06:33   #69
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By the way, what is the role of the fuel rail pressure regulator?
A quote from RAVE, Petrol Engine Management Systems:

"Located on the injection rail is a fuel damper. This, as its name suggests, suppresses the pulses of pressure caused by an injector opening ..."

For clarity, I should have used the term "damper". RAVE refers to the pressure regulator being part of the tank equipment.

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Is that why my engine stalled several times?
I think that's a very reasonable conclusion to draw Brahim. Your leaking damper most likely reduced the fuel pressure at the injectors which would have a detrimental effect on the engine's ability to run smoothly.

Simon
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Old 11th May 2021, 14:05   #70
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Hello, i 've change oil but the idle is always highter than before ( 850/900 rpm). Have you an idea?
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