coolant/throttle body line

[dubber91]

Hi, found the cause of the coolant leak on my 13b. Turns out it was the coolant line between throttle body and the rotary housing.....it goes vertically between the two and connects next to the throttle temp sender.
Anyways, having removed the offending bit of pipe, if found that the pipe off the housing is corroded, and is only about 1.5-2.5cm in length. Will it be ok to just clamp the hose on as before...maybe flaring the ends? anybody got any other ideas as a fix?

Steve

[nikp]

You could as an alterative convert it so that there is no coolant passed to the throttle body. It is being passed through the throttle body to stop ice forming in the throttle body: but we don\'t really live in a climate where that is going to happen, so you could eliminate that hose.

[Martiny]

Ok, but even if we want ot eliminate it, we still have to block the pipe somehow, so we need something to go on there. So i dont see how eliminating it removes the problem.

Get a new hose from Mazda, do your best to clamp it, and see how it goes.

[dubber91]

yeah i think i might as well just try and get some sort of a clamp...maybe flare the end of the pipe and hope for the best. Not running high pressure is it?

[Martiny]

Cooling system pressure, around 1 Bar.
Not sure about the ice theory, I thought it was to warm up the throttle body, and the double throttle, something to do with the double throttle. Or even to warm up the intake so the engine warms up quicker to help with emissions. I might be talking twaddle on this, though, I havent investigated it.

[dubber91]

my experience with other engines is that some sort of pre heat for the inlet manifold (especially one of long length) is required to stop the fuel (at very low temperature) forming ice with any vapour in the combustion air upon the inlet manifold walls. The fact that this is an injection engine, however, almost eliminates the requirement for pre-heat as the injectors are so close to the combustion chamber....

hmmmmm