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How To Identify Euro 3 Type Euro 4 Type Below

glyndwr
glyndwr
in Ford Mondeo / Vignale Club

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How to identify EURO 3 type EURO 4 type below

EURO3EGRVALVE-1.jpg

If the vacuum type valve has one electrical plug on it, then it should be treated as a Euro 4

EURO4EGRVALVE.jpg

Note the piggy back motor, and it should not be unplugged when the plate is fitted

2nd2bolts10mm-1.jpg

1211135687-egr103.jpg

image.jpg

When EGR valve sticks open air supplied to engine by turbo above 1800rpm is diverted into exhaust pipe by stuck open EGR valve, engine management system thinks all this air is going into engine (detected by MAF mass air flow sensor which is located near air filter outlet) so EMS injects fuel to match air it thinks is going into engine, this results in too little air and too much fuel which = Black Smoke.Fitting blanking plate blocks air going back to exhaust so all air boost from turbo goes to engine to burn with fuel. Also stops exhaust going into the engine, which also makes it smoke, and lowers fuel consumption.

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    The "Digestive"

    • The Digestive Forum Roundup (24th May - 31st May 2026)

      Steve ·
      The Digestive Forum Roundup (24th May - 31st May 2026) We hope this email finds you well and enjoying your week. As always, our forum has been buzzing with activity, so we’ve compiled the highlights for you. Plenty of interesting discussions are taking place, especially around the Ford Focus and Fiesta models. Starting off with the Focus, many members have been discussing issues with the Emergency Call System, particularly in the Mk4 model. PLB raised concerns about persistent malfunctions, a se
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