andy couchman Posted September 11, 2019 Share Posted September 11, 2019 My Crossflow runs Jenveys, fed by the standard Rover tank mounted pump and a little blue Weber Alpha fuel regulator. Works fine but in competiton use we're getting fuel starvation symptoms - but only when giving it the full beans - which I never do on the road.How can I tell if the regulator is at issue and, do I maybe need a freer flowing regulator? I'm not sure what max flow is - how do I tell?Help! Link to comment Share on other sites More sharing options...
SM25T Posted September 11, 2019 Share Posted September 11, 2019 Could it be restricted air into the tank ... maybe blocked breather. If you remove the filler cap, is there a big brush of air into the tank. Link to comment Share on other sites More sharing options...
garybee Posted September 11, 2019 Share Posted September 11, 2019 You need to see if you're maintaining pressure in the fuel rail. Do you have a pressure sensor in the rail? Link to comment Share on other sites More sharing options...
Support Team Shaun_E Posted September 12, 2019 Support Team Share Posted September 12, 2019 The standard Rover pump is marginal for fuel delivery on higher powered engines so its possible that it's a pump issue rather than a pressure issue. There is an "R500" pump upgrade to deliver greater volume.However it does sound like you could do with a fuel pressure sensor and gauge to see the pressures at WOT.I'm using the upgraded pump and the same type of fuel pressure regulator as you on my 260bhp Duratec with no issues. Link to comment Share on other sites More sharing options...
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