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A vacuum leak could cause that.
Several problems can cause high fuel consumption. An engine that needs a tune up, a slipping transmission or a problem with a sensor giving bad information to the computer can all cause low fuel economy.
High fuel consumption on an EFI could be caused by a bad O2 sensor. Another reason for high fuel consumption is a dirty air filter or oil filter that needs to be changed. Electronic Fuel Injection vehicles are also famous for clogged fuel injectors.
No
If the Yukon engine has high rpm while driving, check the transmission for slippage, that will cause the engine to over rev. The overheating could be caused by the high rpms.
There are several causes for high fuel consumption in a diesel engine. These include a difference in the weight of the vehicle, increased usage of air conditioning, and a difference in tire pressure.
Over consumption can cause high blood pressure.
Too much oil in an automotive engine can cause high oil pressure. High oil pressure could cause blown seals and gaskets allowing oil to leak out.
Could be, A very high mileage/worn out engine, The PCV system not in working order,
A worn out, tired, high mileage or abused engine could cause low oil pressure.
An engine revving to high RPMs could be a symptom of many conditions. The potential cause?æalso depends on whether this happens?æwhile idling or while driving.
Wear from high mileage, lack of oil changes or abuse could cause that.