Tricky crank no-start problem

[andrewwynn]

The two cylinders on the top of heater hose sound like the heater core control valves left and right. (if by right side of engine bay you meant left (just in front of the USA left hand drive steering wheel)). I suspect that they get "cooled "from the coolant going through sui they are used to temps over 200 but why so hot when not even being used.

[DonaldFoss]

Originally Posted by andrewwynn

The two cylinders on the top of heater hose sound like the heater core control valves left and right. (if by right side of engine bay you meant left (just in front of the USA left hand drive steering wheel)). I suspect that they get "cooled "from the coolant going through sui they are used to temps over 200 but why so hot when not even being used.

Right as in standing in front of the car, looking at engine bay on a US car. I assumed they were just heater valves, but have no idea why they're so hot when the engine is not running. There is only coolant flowing while it's cranking. The hoses on either side were 87F degrees.