My rover 414 16 valve car keeps losing power after a few miles and I cannot get any revs to get it moving again. I've changed the oil, petrol and air filters but it's not helped.

jaxster, February 2010

Check your manifold for a stuck heat riser . It should open with finger pressure. Look down under the manifold for a rocker with a spring. It a flap that funnels hot air from the manifold to the carb. during cold weather. If it sticks it keeps hot gas going into the carb and boils your gas out so you run out of gas with a full tank.

DAVE, February 2010