|
850 / S70 & V70 '96-'99 / C70 '97-'05 General Forum for the 850 and P80-platform 70-series models |
Information |
|
Where is the fuel pressure regulator on my C70 convertible?Views : 2651 Replies : 30Users Viewing This Thread : |
|
Thread Tools | Display Modes |
|
Jun 17th, 2021, 15:48 | #1 |
New Member
Last Online: Apr 20th, 2024 11:34
Join Date: Apr 2011
Location: Lincoln
|
Where is the fuel pressure regulator on my C70 convertible?
I am going demented trying to find the fuel pressure regulator on my 2005 C70 convertible. It is not under the fuel rail; it is not at the end of the fuel rail (although the local Volvo thinks it is and I sent them photos to show it isn't); it isn't alongside the fuel filter and I can't see anything like it near the steering rack. I think it's the cause of the car not starting in warm/hot weather as we have checked everything else. What I have found on the car shown in the attached photo has been described in info I found on the net (an info sheet of the control system fuel supply on an 2005 XC90) as control system, fuel supply -its the circular item which is connected to the manifold and then has a thin pipe which disappears. Does anyone know what it is? My car seems to be a rogue version as it nearly always needs the parts listed for another model. Help please.
|
Jun 17th, 2021, 22:19 | #2 |
Classic P80 1999 BiFuel
Last Online: Jun 12th, 2024 13:12
Join Date: Aug 2012
Location: 48mph Middle Lane M4
|
I'm afraid I can't help you, and I'm not sure what that piccy indicates, but mine a 1999 model I suspect operates the same way. There's no regulator in the fuel rail, despite claims that it's there. I believe some do have it there?
Mine: A single pipe goes to the rail such that excess pressure could not vent anyway. I've looked in the past and never understood its operation. All i can say is, by the sounds of this... yours is like mine.
__________________
Bifuel V70 Classic 1999 [The Old Grumpy in the Corner, "When I was a lad... blah, bl**dy blah."] |
Jun 17th, 2021, 22:24 | #3 | |
Master Member
Last Online: Mar 11th, 2022 22:01
Join Date: May 2010
Location: manchester
|
Quote:
|
|
Jun 18th, 2021, 07:51 | #4 |
Classic P80 1999 BiFuel
Last Online: Jun 12th, 2024 13:12
Join Date: Aug 2012
Location: 48mph Middle Lane M4
|
That'd make more sense, there's only one line going into the filter (sited near back axle on my V70). Over-pressure must vent before then. My guess is the blow-off is done at the pump.
What I don't understand is how, as the OP's issue... how is excess pressure vented on a hot day? We've all seen a plastic petrol-can expand in August, how this system deals with that - or in the OP's case doesn't - I don't understand. Because it's a factory Bifuel thus I've looked into mine to try to stop the small amount of liquid use when running gas. I tried to vent liquid, and epected to vent pressure back to the tank. There's no return rail from the engine-bay, thus I got 'frit'. Clueless messing with August over-pressure sees me heading into Darwin Award territory, I stopped.
__________________
Bifuel V70 Classic 1999 [The Old Grumpy in the Corner, "When I was a lad... blah, bl**dy blah."] Last edited by CNGBiFuel; Jun 18th, 2021 at 08:08. |
Jun 18th, 2021, 11:26 | #5 |
New Member
Last Online: Apr 20th, 2024 11:34
Join Date: Apr 2011
Location: Lincoln
|
Thank you for your responses. My C70 definitely has two fuel pipes running to and from the tank. Alongside the fuel filter it has something called a rollover valve which I assume is some sort of tank venting system. See photo.
I am intrigued by the circular part behind the engine and better photos are attached. It is connected to the manifold so obviously works with a vacuum and a metal pipe, like a fuel pipe, comes out the back and then under a heat shield so I can't see what it is connected to (even form underneath the car) but it is in the direction of the fuel line. What is it? |
Jun 18th, 2021, 16:47 | #6 |
MaDMaN
Last Online: Nov 26th, 2022 18:47
Join Date: Sep 2006
Location: Red Lodge
|
The item in the first picture is the FPR....
__________________
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
|
|