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Discussion Starter #1
Found 2 areas that are leaking in my Corniche III anyone experienced this before care to venture a guess on what it could be.
The car has been running a bit weak especially at the top end and I'm smelling and uncomfortable amount of petrol fumes coming from the engine bay area.

Gas mileage is horrible as I'm getting only about 100km out of half a tank with mixed city/highway drive. I'm guessing it could be a leak somewhere or a bad fuel pump. I'm going to get a new fuel pump, fuel filter and change all the major fuel hoses as well and see if this will sort it out. If not I might move on to the fuel injectors. Its looking fine on the outside but its seen much better days mechanically.
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Hi
I had something similar recently on my Corniche 2, mine has Bosche Fuel injection.
Mine was sudden - all OK, and then suddenly much reduced power, then we used quarter of a tank over 15kms to get off the motorway, and only then smelt petrol as we stopped....
It was easy to locate as it was squirting out of the sensor on the pipe taking petrol to the injection - squirting directly onto the Hot exhaust - so we had a lucky escape!

Finding it hard to get at and not sure what that part even did, or what part to order, I had it fixed by a local RR specialist. He said he had never seen one of those break before, and these are only on USA spec models (so not easy to get here in Germany as Bosche dont make them anymore) but the sensor was simply cracked and broken.
(small cream colored block with 2 cables coming out of it right in the middle of the image below, half hidden under the body of the injection system)-.

They fitted an new one, but said the fuel pressure was set up wrong, which he said caused the occasional bad starting when the engine was hot that has recently experienced.
Must admit, I don't totally understand that, but whatever magic they have done its running superb now.

Hope you can fix yours too - Im sure it will be one component that just is not handling the pressure,

Chris

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Properly diagnose what is going on. If you have FI, which I believe you do, There may be many reasons for the poor running. Delayed maintenance is usually the root cause although component failure can be a factor.
If you are not familiar with servicing the car, bring it to someone that knows these cars..
Fuel injection is easy to sort out. The component (tan connector) is a fuel regulator. You have a fuel distributor as well and fuel filters in the rear. The filters should be changed. I would not recommend changing injectors(they are Bosch) if you do not know what you are doing. The injectors can be cleaned and flow tested, Injector seats must changed at this time also.
Be aware that throwing money without knowing the cause will cost you money, waste time and eventually frustrate you in the end.
 

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Have the engine running and see if you can see any leaks - with gas mileage like that, there must be an obvious leak!
Have a second person with a fire extinguisher standing by!
 

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Your car uses CIS fuel injection which means that there are usually two rubber hoses feeding the fuel and the return. Your fuel distributor has an EHA valve bolted to the side. Those are usually the only places where fuel can leak as the rest are steel lines with fittings that are tightened to be leak free.

Remove the lines with the rubber hoses and take them to a hydraulic shop. They will cut the rubber hose out and install a new hose. Problem solved.

Don't drive it as is, you'll set the car on fire
 

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Discussion Starter #6
Thanks for the replies.
I didn't drive it anymore as soon as I discovered the petrol leak in the engine bay. I'm guess its only leaking when pushed hard as i started her up in hope to locate the leak but can't find any at idel speed. I did push it to redline on a few occations prior to finding this leak.

I'm having it towed to a specialist on Monday.
 

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Discussion Starter #7
Your car uses CIS fuel injection which means that there are usually two rubber hoses feeding the fuel and the return. Your fuel distributor has an EHA valve bolted to the side. Those are usually the only places where fuel can leak as the rest are steel lines with fittings that are tightened to be leak free.

Remove the lines with the rubber hoses and take them to a hydraulic shop. They will cut the rubber hose out and install a new hose. Problem solved.

Don't drive it as is, you'll set the car on fire
Would the 2 hoses in the diagram be the ones you're referring to?
 

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