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EGR Valve problem
Hose keeps blowing off the bottom of the egr valve.It first s on 1997 Toyota RAV4

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Hose keeps blowing off the bottom of the egr valve. It first started when the port of vaccum got hot and melted so I replaced it then I replaced the vaccum modulator because the hose kept blowing off it. Now the hose is blowing off the EGR valve so I replaced it but it is still blowing off.
(1) Answer
somewhere betwen egr and egr pipe there is a restriction within the circulation. google for how to check your egr.