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  #1  
Old 12-08-2010, 07:00 AM
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How Are INTERNAL Coolant Leaks Detected?

Am I correct in assuming that pressure testing the cooling system only detects EXTERNAL system leaks? If so, how are INTERNAL leaks (i.e. coolant into engine or transmission) detected? I know fluid analaysis is one way. But how would my indie do it?

Conversely, if pressure testing the system DOES help diagnose an internal leak, how exactly does that work?

I know these are probably basic questions....thought you guys could help me out with my ongoing education.

Thanks.

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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles
06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

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  #2  
Old 12-08-2010, 08:20 AM
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fluid analysis, and exhaust gas analysis of the coolant tank...
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"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
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  #3  
Old 12-08-2010, 08:25 AM
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Quote:
Originally Posted by vstech View Post
fluid analysis, and exhaust gas analysis of the coolant tank...
So I assume that the latter but not the former is what the typical indie shop is capable of? Obviously they could do fluid analysis in the sense of visual inspection....
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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles
06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife
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  #4  
Old 12-08-2010, 10:15 AM
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Location: Mount Holly, NC
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gas test is done with a color change strip...

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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