Hi,

 

After a major overheat from turbo water pipe last year I've been trying to confirm the head gasket has gone before I pull the engine.

 

The engine runs well (on drive as on sorn), gets up to temperature and doesn't overheat. However there is a lot of dirty crud in water (brown deposits, almost rusty looking that float to neck of rad!)

 

I've tried a block test but that was not conclusive, even though I dropped the water level considerable it kept sucking up coolant after 4 or 5 pumps of bulb. Stayed blue until then.

 

I've just done a hot compression test and got the following readings: TT Manual.

 

1. 166

2. 159

3. 158

4. 160

5. 165

6. 160

 

I'm not sure what to do next.

I've tried flushing coolant by trickle method with hose. Am guessing I should take rad out and reverse flush it and pull thermostat to flush block properly.

 

Any advice really appreciated.

Hi,

 

After a major overheat from turbo water pipe last year I've been trying to confirm the head gasket has gone before I pull the engine.

 

The engine runs well (on drive as on sorn), gets up to temperature and doesn't overheat. However there is a lot of dirty crud in water (brown deposits, almost rusty looking that float to neck of rad!)

 

I've tried a block test but that was not conclusive, even though I dropped the water level considerable it kept sucking up coolant after 4 or 5 pumps of bulb. Stayed blue until then.

 

I've just done a hot compression test and got the following readings: TT Manual.

 

1. 166

2. 159

3. 158

4. 160

5. 165

6. 160

 

I'm not sure what to do next.

I've tried flushing coolant by trickle method with hose. Am guessing I should take rad out and reverse flush it and pull thermostat to flush block properly.

 

Any advice really appreciated.

 

after an overheat this is common in all engines ,all the crud that has deposited lifts off and mixes with the coolant,dont condemn the engine yet,the comp test figures are good.flush the system and add new antifreeze.When you unsorn the car go for a gentle drive and see how she behaves.

Cheers for that Jimmer.

 

There's hope for the old girl yet!

only way to get rid of that dirty sh%t is flush only engine and get new radiator .

only way to get rid of that dirty sh%t is flush only engine and get new radiator .

 

Crap, hope not, it's a Koyo rad. Hoping a reverse flush will sort it.

May be worth getting a proper rad flush solution in there.

 

Wurth products are excellent pro grade products: http://www.camskill.co.uk/m1b0s4322p54374/Wurth_-_Radiator_Cleaner_-_250ml_-_Radiator_Flush_

WURTH products are good Paul your right fella.

WURTH products are good Paul your right fella.

 

Yea, is all we use mate. Top products and far better than any of the consumer grade products you get over the counter at halfords etc!

Cheers Paul, I'll get some of that ordered.