fuel pressure 45 Zetec

[Schnitzel]

how high should be the fuel pessure , Zetec 2,0l silvertop 45 weber

[Molecular--Bob]

I'm running my 40's at 2.5 with a sytec adjustable, should be ok a little higher, say 3psi, but more may cause the carbs to overflow.

[Drumster]

I ran my 2.0l Blacktop on 40s at 3psi. No trouble with carbs flooding.

[Guy Lowe]

3 psi

[LesG]

Every engine is different, and fuel pressure regulators (like tyre pressure gauges) aren't always calibrated exactly. The only way to be sure is to have your car set up on a rolling road, where you can see the results of adjusting your FPR.

[Phil B]

Wie gehts Florian?

 

Try this web page for a weber troubleshooting guide! 3.5 psi max recommended, in practice keep it as low as you can to ensure float chambers are full (ie jets correctly covered with fuel) at max power demand.

 

http://www.webercarbsdirect.com/v/vspfiles/images/Weber%20Trouble%20Shooting%20Guide.pdf

 

Viel spass,

 

Phil B

[Schnitzel]

Thank you all, will work one it. Think was to low 2,8 psi.

 

@Phil hope to see you in June, with the correct pressure.

 

Florian

[Guy Lowe]

Quoting LesG: 

Every engine is different, and fuel pressure regulators (like tyre pressure gauges) aren't always calibrated exactly. The only way to be sure is to have your car set up on a rolling road, where you can see the results of adjusting your FPR.

You do not need to go to the expense of a rolling road to determine fuel pressure for carbs, you just need to make sure there is sufficient pressure to feed the carbs under maximum demand and not too much pressure so that it holds the float valves open when there is low demand causing the float chambers to flood.

 

Guy