bleeding rear heater

[die-tryin]

hi is there any bleeders for the rear heater?

[Northern Bongolow]

the short answer is no, as the matrix is mounted with the inlet/outlet facing down,so the air in theory can get trapped in the matrix itself.
however, most bongos have bleed nipples along the rear metal pipes,look for a nipple shaped rubber cap about 10-15 mm high with a clip around its base.

someone far cleverer than i may post a link to lush projects as i cannot. sorry.

why do you ask ?

[321Away]

i used to use the pipes to rear matrix to bleed the system, due to the 1 way flow of the system,you almost never get air trapped in the rear matrix, with car running put ur hand on inlet and outlet pipes and you'll be able to tell if you have flow or not as both pipes should be warm, if not then the matrix itself might be blocked preventing any flow at all, in which case dive under the drivers side and disconnect the hoses 1 at a time.
Julian

[die-tryin]

had a few temp probs on sunday and it dumped a load of coolant seams ok now though the main front heater is hot its just the rear one thats cold. taken it for another drive and temp gauge only goes to normall place and does not dump any water etc any ideas?

[wonkanoby]

Have you bleed it?

[die-tryin]

Not the the videos inthe other posts but i cant get any more air out

[Northern Bongolow]

sorry i dont understand your last post.
if you go on youtube, and put in how to bleed a mazda bongo, there are 3 videos, they may help.

[die-tryin]

yer i watched the videos but after i had done the job did not know about the hose so have not used it but left the bottle cap off all day when it was not in use. It emptyed the tank so re fillled it drove it and temp gauge is still ok so i front heater its just the back one.

[Northern Bongolow]

what was the old coolant like----------.as any solids in the system usually fall to the lowest point in the system(the rear heater),did you remove the rear heater pipes and flush out the matrix to make sure it was clear. or it may just be air.

[richieb]

i didnt know it had a bleeding rear heater, but im new to this planet bongo!