Do i need a catch can?
I agree black smoke generally indicates unbrunt fuel or soot. Oil would be blue smoke.
a catch can works with the PVC system where oil is forced out of the crankcase breather and back into the throttle body. The oil would then be vaporised during combustion. But you are only talking small amounts of oil in most cases.
I agree black smoke generally indicates unbrunt fuel or soot. Oil would be blue smoke.
a catch can works with the PVC system where oil is forced out of the crankcase breather and back into the throttle body. The oil would then be vaporised during combustion. But you are only talking small amounts of oil in most cases.
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Water/steam (water vapour) are present in non catalytic cars, trust me I know as cats were not mandatory in the UK until 1993 so lots of cars don't have them. My TR7 V8 doesn't have cats but on a damp/colder morning a vast quantity of steam is present at sart up and until the engine has warmed up a bit.
I also had a V12 Jaguar without cats (sold it just before Christams last year), I removed the rear silencers on it one time and the drivers side one was full of water, this was not rain water either or from fording deep water it must have originated from the exhuast gases.
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Water/steam (water vapour) are present in non catalytic cars, trust me I know as cats were not mandatory in the UK until 1993 so lots of cars don't have them. My TR7 V8 doesn't have cats but on a damp/colder morning a vast quantity of steam is present at sart up and until the engine has warmed up a bit.
I also had a V12 Jaguar without cats (sold it just before Christams last year), I removed the rear silencers on it one time and the drivers side one was full of water, this was not rain water either or from fording deep water it must have originated from the exhuast gases.





