1988 Volvo 740 "engine blowby fix pcv" Questions

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...blowby is normal on all engines. The PCV system(Positve Crankcase Ventilation)pulls the gases out and directs them back into the egine to be burnt again. I would first check the PCV system to make ...

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...blowby vapors that end up in an engine's crankcase contain moisture as well as combustion byproducts and unburned fuel vapors. The crankcase is sealed to prevent the escape of these gases into the ...

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...blowby gases Etc. Why would you change the speed sensor,just because you got a code. The code is the symptom,not always the causes of the issues or problems. You have driveability issues with the ...

Question about Volvo 740

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...blowby and a build-up of compression in the crank case. The only solution, unfortunately, is a complete sub assembly overhaul. Just to confirm the above, try taking the dip stick out while the engine ...

Question about Volvo 740

1 Answer

engine is plugged up, the oil can not return to the crankcase fast enough. The pooling oil is more apt to lay by the valve stem seals and be drawn into the combustion chamber. Also check the PCV valve

Question about Volvo 740

1 Answer

...or not properly connected to the air inlet, it can allow more blowby. However, if there a lot of miles on the engine, it might be time for new piston rings. Run a compression test on all

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