if you step back and test rather than assume you know answers..
you would be absolutely amazed and shocked, at how often,
your first impression or assumption was wrong !
a good example would be a recent case where a neighbor asked me if I would help him replace a
"BLOWN HEAD GASKET" he had found he could not get the engine to turn over on a new crate engine,there was liquid in two cylinders preventing the engine rotation,on that new engine, he had recently installed in his car.
his evidence was, simply that he pulled all the spark plugs and found rusty water in TWO cylinders.
now that convinced him the head gasket was leaking,
so he wanted to pull that cylinder head on that bank and replace the head gasket.
Now think about the "evidence" rusty water in TWO , non adjacent cylinder's.....but not in the crank case...none in the oil, none under the valve covers...
I started out by asking if the radiator was filled with COOLANT or plain water....the look on his face was priceless...he had the radiator filled with green anti-freeze..how in hell does rusty water get into a cylinder if the engines filled with coolant?
well? ....it soon became obvious that the more likely, source of the water was after a compression test showed all 8 cylinders had similar compression and there was no evidence of compressed air , we used during a leak down test, that was forced into the cylinders leaking bubbles into the radiator coolant, or and sound of leaking air in the crank case....
once the two cylinders , with a small amount of rusty water blew their content , out of the spark-plug holes, when the starter spun the engine over, rapidly, thus, forcing the pistons to blow it out the exhaust ports and the empty spark plug holes, where drained and a small bit of MMO (marvel mystery oil) was squirted into each cylinder the engine was spun over a few dozen times without the spark plugs installed , we reinstalled 8 new spark plugs and fired the engine up, and let it idle, for over 30 minutes then took the car for a drive, .....no evidence of
a leaking cylinder or blown head gasket.. it simply looks like rainwater run-off got into the carb, and drained into a couple cylinder while the car sat outside with its hood off for several days.
you would be absolutely amazed and shocked, at how often,
your first impression or assumption was wrong !
a good example would be a recent case where a neighbor asked me if I would help him replace a
"BLOWN HEAD GASKET" he had found he could not get the engine to turn over on a new crate engine,there was liquid in two cylinders preventing the engine rotation,on that new engine, he had recently installed in his car.
his evidence was, simply that he pulled all the spark plugs and found rusty water in TWO cylinders.
now that convinced him the head gasket was leaking,
so he wanted to pull that cylinder head on that bank and replace the head gasket.
Now think about the "evidence" rusty water in TWO , non adjacent cylinder's.....but not in the crank case...none in the oil, none under the valve covers...
I started out by asking if the radiator was filled with COOLANT or plain water....the look on his face was priceless...he had the radiator filled with green anti-freeze..how in hell does rusty water get into a cylinder if the engines filled with coolant?
well? ....it soon became obvious that the more likely, source of the water was after a compression test showed all 8 cylinders had similar compression and there was no evidence of compressed air , we used during a leak down test, that was forced into the cylinders leaking bubbles into the radiator coolant, or and sound of leaking air in the crank case....
once the two cylinders , with a small amount of rusty water blew their content , out of the spark-plug holes, when the starter spun the engine over, rapidly, thus, forcing the pistons to blow it out the exhaust ports and the empty spark plug holes, where drained and a small bit of MMO (marvel mystery oil) was squirted into each cylinder the engine was spun over a few dozen times without the spark plugs installed , we reinstalled 8 new spark plugs and fired the engine up, and let it idle, for over 30 minutes then took the car for a drive, .....no evidence of
a leaking cylinder or blown head gasket.. it simply looks like rainwater run-off got into the carb, and drained into a couple cylinder while the car sat outside with its hood off for several days.