leak down tests
Posted: Wed Feb 10, 2010 8:52 am
Just a question raised from another thread about buying a wagon. After three tests there was a problem found with the leakdown test, but the first two missed it.
The two previous tests that showed no problems, how is this possible? Is this method a bit hit and miss? Got me worried when it take three goes to find a problem (and three payments), is there recourse available to recover some costs on the previous two tests? what would be your recourse as a buyer if the head was stuffed and you bought it based on the leakdown test?
Would an MTA or any garage cover the repairs if you bought based on their evaluation only to have then proven wrong?
I guess warm engine against cold engine and oil in bore versus dry etc. Individual methodology would vary from mechanic to mechanic.
Is there a prescribed truely acurate method agreed on by all mechanics to get a true picture of the state of compression? Or is this a blackart?
Heath
The two previous tests that showed no problems, how is this possible? Is this method a bit hit and miss? Got me worried when it take three goes to find a problem (and three payments), is there recourse available to recover some costs on the previous two tests? what would be your recourse as a buyer if the head was stuffed and you bought it based on the leakdown test?
Would an MTA or any garage cover the repairs if you bought based on their evaluation only to have then proven wrong?
I guess warm engine against cold engine and oil in bore versus dry etc. Individual methodology would vary from mechanic to mechanic.
Is there a prescribed truely acurate method agreed on by all mechanics to get a true picture of the state of compression? Or is this a blackart?
Heath