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Clio 225 Clio Build

Well hit another bump in the road today

Headed to perth to pick up my new injectors from parcelforce as I need them for mapping and the fuel reg decided to fuck up and pish fuel every where so had to be recovered home and I'm going to hunt around every performance garage in fife and Central Scotland until I get a pressure regulator tomorrw
Fucking starting to hate this car
 
Well hit another bump in the road today

Headed to perth to pick up my new injectors from parcelforce as I need them for mapping and the fuel reg decided to fuck up and pish fuel every where so had to be recovered home and I'm going to hunt around every performance garage in fife and Central Scotland until I get a pressure regulator tomorrw
Fucking starting to hate this car
I have never, ever, seen an OE reg fail, was it an aftermarket one and if so which brand?
 
I have never, ever, seen an OE reg fail, was it an aftermarket one and if so which brand?

Was aftermarket one from eBay I bought it last year

Here's the how it looked
image.webp image.webp image.webp

Got a new one fitted just to set it to 3 bar but will be looking at changing the set up soon so this doesn't happen again
 
Holy smokes! In fact you're lucky it wasn't holy smokes!

AFAIK all the blown Renault OE regs are rising rate, granted you can't adjust the baseline pressure but for the difference it makes...which is very small....i've always preferred them. A good, reliable setting that won't change (or do what yours did!).
 
Fitted new regulator ans or and set the pressure to 3bar when cranking. Not coil of course but when the car started sound fine the pressure gauge sits at 3.5 bar don't know if that's right

image.webp image.webp
 
Fitted new regulator ans or and set the pressure to 3bar when cranking. Not coil of course but when the car started sound fine the pressure gauge sits at 3.5 bar don't know if that's right

View attachment 2879 View attachment 2880
Well you really need it ruining to set the fuel pressure up the general rule is 3 bar vac plugged on 3.5 bar unplugged ! Any reason why its not run up or are you awaiting a visit to scoff to ryn it for the first time

Edited to add read the thread nice car by the way
 
Well you really need it ruining to set the fuel pressure up the general rule is 3 bar vac plugged on 3.5 bar unplugged ! Any reason why its not run up or are you awaiting a visit to scoff to ryn it for the first time

Edited to add read the thread nice car by the way

Car has been running N/A for the last month (actuator disconnected) and was bedded in on the rollers

I'll take the run for a run....cars not going to scoff for mapping this time I'm afraid due to the build taken so long it's going a well known local mapper
 
cool well your not going to do any damage at idle so connect the actuator make sure there is no vacuum leaks any where get it to idle and set the fpr up
 
Cant supply the fuel apparently.
Regulators are nothing to do with supply. They sit after the rail and control pressure by backpressure, ie, they only let past what isn't required. The only possible issue you could have flow wise with a reg is if your pump is supplying SO much fuel the reg can't let enough past and thereby increasing the fuel pressure exponentially but I don't think I have ever seen a reg that can't relieve enough for a pump.
 
Regulators are nothing to do with supply. They sit after the rail and control pressure by backpressure, ie, they only let past what isn't required. The only possible issue you could have flow wise with a reg is if your pump is supplying SO much fuel the reg can't let enough past and thereby increasing the fuel pressure exponentially but I don't think I have ever seen a reg that can't relieve enough for a pump.


Thats what I thought lol its normally the pump you have to upgrade not the reg
 
Here....this shows it better. The vac pipe to the top of the reg gives a signal from the inlet manifold. At idle, you get a vacuum to the top of the reg. This sucks the diaphragm up and that means you need LESS fuel pressure to open the reg. Thats why you would see, for example, 2.0bar at idle on a Renault 21 Turbo. When driving at light throttle, with atmospheric pressure in the manifold and no pressure or vacuum in the signal pipe the reg runs at its rated spring pressure and gives 2.5 bar fuel pressure as there is no vacuum assistance, or pressure resistance to the diaphragm.
When you hit boost, the manifold pressure ramps up and feeds this pressure signal to the top of the reg. This pushes down on the diaphragm and makes it harder to open- ie- requires more fuel pressure under it to open the diaphragm. On the 21 (and most if not all others), this is a direct correlation....the fuel pressure you see = 2.5bar + Manifold boost pressure so when I run at 1 bar boost I have 2.5bar fuel pressure. It keeps the fuel pressure at boost pressure +2.5bar at all times. If it didnt the pressure in the manifold would force back the fuel flow and reduce fuelling...if I ran 2.5bar boost, the pressures would be equalised and no fuel would come out!

i30.photobucket.com_albums_c321_MeanGreenS13_general_fuel_setup_1.webp

So- why fit an aftermarket reg? If you're going from a non-turbo setup to a turbo setup maybe. Or if you want the baseline fuel pressure to be higher.... so it's always 3bar+manifold pressure. I don't think it's necessary though, not at our level.
 
Regulators are nothing to do with supply. They sit after the rail and control pressure by backpressure, ie, they only let past what isn't required. The only possible issue you could have flow wise with a reg is if your pump is supplying SO much fuel the reg can't let enough past and thereby increasing the fuel pressure exponentially but I don't think I have ever seen a reg that can't relieve enough for a pump.

You jumped the gun. The regulator and pump cant supply the fuel its all in tank and gash. The 100% need to be upgraded to get 400+
Tried and tested in the Meg.
 
You jumped the gun. The regulator and pump cant supply the fuel its all in tank and gash. The 100% need to be upgraded to get 400+
Tried and tested in the Meg.
I believe the pictures above show the reg in the engine bay, gimp boy :)

So does the std Meg run the reg in tank, returnless fuel line like the ClioSport? Pain in the ass.
 
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