Bleeding help. Non standard engine change
Discussion
A couple more thoughts..
I'm wondering if I have got enough coolant mixed in.. does adding coolant add thickness to the water?.. on the basis that I'm emptying the system every other day it seemed a bit pointless / wasteful.
It's probably very weak coolant %.
I'm reading on bimmer forums people experiencing similar issues, basically saying blow into header tank with bleed nipple open.
Surely this is basically the same as one of these coolant pressure testing kits?....
I'm wondering if I have got enough coolant mixed in.. does adding coolant add thickness to the water?.. on the basis that I'm emptying the system every other day it seemed a bit pointless / wasteful.
It's probably very weak coolant %.
I'm reading on bimmer forums people experiencing similar issues, basically saying blow into header tank with bleed nipple open.
Surely this is basically the same as one of these coolant pressure testing kits?....
Evoluzione said:
Jesus wept ffs buy a bloody pressure testing kit or else a vac type for a few quid and do it properly instead of sitting there just talking about it every day.
You ask for advice then ignore the answers!
I still can't help but wonder if the guy actually has enough coolant in it. My E39 would take around 10litres,. I would use a 5l of neat coolant and 5l pre mix and nearly all of it would be used allowing for tiny bit of spillage/overflow whilst bleeding..You ask for advice then ignore the answers!
I really want to see an image of this guy's truck with the front end up at a 45° angle so the rad is higher than the back end of the block!!!
tommobot said:
I've lost track of the exact quantity of fluid in the system..
I wouldn't have thought I'd managed to get 10L in, maybe 6L at a guess. Surely that's my point if there's a big airlock which I'm trying to shift.
I've ordered a pressure bleeder so will see how it goes
Why don't you drain it, measure what fluid was in there and then refill?I wouldn't have thought I'd managed to get 10L in, maybe 6L at a guess. Surely that's my point if there's a big airlock which I'm trying to shift.
I've ordered a pressure bleeder so will see how it goes
As said; the M52/54 cooling systems on the BMWs take 10 litres
So armed with a vacuum refill kit and a pump test kit, I still haven't got this sorted.
I'm fully prepared for being told Ive been stupid.
The vacuum refill, works as it should... Holds a vacuum of about 23 whatever the gauge measures.. all the pipes collapse and refill with coolant. Tried this, still airlock.
So tried again.. drained system somewhat vacuum, refill and then vacuum refill again. Better. Managed to get heat back to heater, and it seemed like bottom hose got warm...
Took it for a spin down the road.. rose up to 120c..
Pump thing doesn't seem to make much difference.
I'm thinking airlock Infront of stat?... water temp Infront of stat was measured at mid 70c...
I've got an aluminium thermostat housing, with 2 extra bleed screws but the chap welded the boss on right Infront of one of the bolts.
Could it be water pump???.
Don't think I'm being catastrophically stupid..
I'm fully prepared for being told Ive been stupid.
The vacuum refill, works as it should... Holds a vacuum of about 23 whatever the gauge measures.. all the pipes collapse and refill with coolant. Tried this, still airlock.
So tried again.. drained system somewhat vacuum, refill and then vacuum refill again. Better. Managed to get heat back to heater, and it seemed like bottom hose got warm...
Took it for a spin down the road.. rose up to 120c..
Pump thing doesn't seem to make much difference.
I'm thinking airlock Infront of stat?... water temp Infront of stat was measured at mid 70c...
I've got an aluminium thermostat housing, with 2 extra bleed screws but the chap welded the boss on right Infront of one of the bolts.
Could it be water pump???.
Don't think I'm being catastrophically stupid..
tommobot said:
it was flowing accross the rad with it in.
Doesn't prove the pump is perfect, but presumably it's doing at least something.How does hot coolant get in and out of the stat housing when the stat is closed? Is the a bypass from the top of the engine, or does it rely on a heater hose, flow through the header tank and so on?
GreenV8S said:
Doesn't prove the pump is perfect, but presumably it's doing at least something.
How does hot coolant get in and out of the stat housing when the stat is closed? Is the a bypass from the top of the engine, or does it rely on a heater hose, flow through the header tank and so on?
There a small hole in the stat housing that should allow water Infront of the stat back into the hose leaving the engine towards the top hose.How does hot coolant get in and out of the stat housing when the stat is closed? Is the a bypass from the top of the engine, or does it rely on a heater hose, flow through the header tank and so on?
I can't guarantee that I've got enough coolant, but header is pretty much full, rad is full.. water present at all other hoses but there's either a pocket of air... Or dodgy water pump..
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