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sarahjung15

Ford BMAX Air Valve Issue

My 2015 Ford BMAX with a gasoline engine is giving me grief. Check engine light is on, and I suspect it's an air valve issue. Mileage is at 38157 km. I'm betting it's a vacuum hose problem - the connection from the pump to the valve seems suspect. Anyone dealt with this before?

Summary of the thread

A 2015 Ford BMAX owner experienced a check engine light issue, suspecting an air valve problem potentially caused by a vacuum hose defect. The vehicle had 38,157 km on the odometer. After discussing possible causes, including manifold pressure and throttle body inspection, it was suggested that a vacuum leak was likely. The owner confirmed the issue was indeed a defective hose from the pump to the valve, which was resolved at a repair shop.

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4 comment(s)

leonkoenig4

Vacuum leak on a BMAX? Possible. Have you checked the manifold pressure and throttle body? A defective hose could definitely throw off the readings and trigger the light. Stalling at idle?

sarahjung15 (community.author)

Throttle body looked okay on initial inspection, but I haven't dug deeper. Manifold pressure I can check. You think it's likely a vacuum leak over something else? I haven't noticed any stalling.

leonkoenig4

Given the mileage and your description, I'd still put my money on those damn vacuum hoses. Known weak point. If you're not seeing any other obvious issues, I'd get it to a workshop to properly diagnose the vacuum system. Better safe than sorry.

sarahjung15 (community.author)

Dropped it off at the shop; you were spot on. Defective hose from the pump to the valve. Cost me 175€ to get it sorted. Appreciate the insight!

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FORD

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BMAX