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Yes it will. If the valve is sticking closed (or partially closed) you won't supply enough fuel. Anti-siphon valve problems are usually evident by a collapsed primer bulb.Will a faulty anti siphon valve cause my 1986 150 crossflow to starve for fuel? If I push the electric choke at the key it picks right up. The bulb felt like it wouldn't get very hard like it usually does. Model # E1508TLCDC
