56oval
RMS Regular
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- 4,906
As the title.
I have the unfortunate pleasure of being roped in to trouble shoot a friends Landrover.
It has had a 3.0 Essex v6 shoehorned in from a Ford.
It seems that it has always overheated since he bought it, the list of parts replaced by his garage are, thermostat, water pump, block flush, radiator checked by Brownlow rads and deemed ok.
So!!!
I whipped the plugs out and scoped the bores, couldn't see any immediate signs of water in the cylinders.
Compression tested it, 130-150 psi across all 6.
Have not performed a sniff test yet and that is looming.
Ran it up yesterday and within 5 minutes, the temps rocketed. Rad hot, top to bottom. Tried to bleed the bypass which heads from the block below the stat, out to to choke unit then on to the heater matrix and back to the waterpump. Nothing, not even a dribble.
So i flushed the heater matrix, plenty of brown rusty coolant.
Pre filled it and hooked it back up, ran the engine, temps rocketed immediatly.
Bypassed the matrix, no different.
By this time i was stumped, flushed the entire system for half an hour, refilled and ran it up, no difference.
Its a circulation problem for sure as the matrix feed and return pipes are tepid rather than hot like the rad pipes and there is nothing coming from the bleeder.
There is a port in the top of the waterpump that is blocked off, i have tried to find schematics of the cooling system to no real avail.
Outside of a sniff test, i'm all out of ideas and ready to pull the heads off it and inspect the gaskets and block.
@stevieturbo , you are bound to have form with these???
Any ideas would be welcome, fyi ignition, timing and fuelling are all spot on.
I have the unfortunate pleasure of being roped in to trouble shoot a friends Landrover.
It has had a 3.0 Essex v6 shoehorned in from a Ford.
It seems that it has always overheated since he bought it, the list of parts replaced by his garage are, thermostat, water pump, block flush, radiator checked by Brownlow rads and deemed ok.
So!!!
I whipped the plugs out and scoped the bores, couldn't see any immediate signs of water in the cylinders.
Compression tested it, 130-150 psi across all 6.
Have not performed a sniff test yet and that is looming.
Ran it up yesterday and within 5 minutes, the temps rocketed. Rad hot, top to bottom. Tried to bleed the bypass which heads from the block below the stat, out to to choke unit then on to the heater matrix and back to the waterpump. Nothing, not even a dribble.
So i flushed the heater matrix, plenty of brown rusty coolant.
Pre filled it and hooked it back up, ran the engine, temps rocketed immediatly.
Bypassed the matrix, no different.
By this time i was stumped, flushed the entire system for half an hour, refilled and ran it up, no difference.
Its a circulation problem for sure as the matrix feed and return pipes are tepid rather than hot like the rad pipes and there is nothing coming from the bleeder.
There is a port in the top of the waterpump that is blocked off, i have tried to find schematics of the cooling system to no real avail.
Outside of a sniff test, i'm all out of ideas and ready to pull the heads off it and inspect the gaskets and block.
@stevieturbo , you are bound to have form with these???
Any ideas would be welcome, fyi ignition, timing and fuelling are all spot on.