SOURCE: toyota 1ge engine 0n a Toyota mk 2 heavy fuel consumption
it can be some reasons mybe cylinder head, inlet valve worn out.
it can be cuporator valve releasing more petrol into the inlet.
Brakes it can be. check contacpoint.
SOURCE: 2002 camry
It sounds like your valve seals are getting old and are leaking oil into your pistons.As long as it is not using a lot of oil or fouling your spark plugs drive the heck out of it and look the other way when you first crank it up in the morning.
One other problem that will cause this is a cracked head or a leaking head gasket which is getting water on your pistons overnight. Watch for #1 low antifreeze in your radiator #2 higher than normal engine temperatures. This could be a serious problem that could cause expensive damage to your engine if not corrected.
SOURCE: high oil consumption on 2001 Toyota Highlander- 3.0 V-6 engine
If you are using that much oil you either have a BIG leak or your BURNING oil through bad rings
SOURCE: celica oil consumption
Try cleaning your engine with an engine flush such as AMSOIL engine flush and then draining your oil once the flush is complete. It will clean the interior of the engine and drain out the contaminants. Once this has been perfomed replace the old oil with completely synthetic AMSOIL or Mobil 1. These oils are know for there ability to clean an engine and to reduce the chances of sludge formation in toyota engines. This is a good place to start before you go spending thousands on a new engine!!
Testimonial: "Thanks!Done engine flush&oil change today,also added some engine treatment in there for gd measure,all that's left is to wait&see. thanks v much :)"
SOURCE: 1986 toyota corolla 2E engine high fuel consumption
A dirty air cleaner will cause an engine to use lots of fuel and still appear to run fine especally in cold weather. If you have not changed your air cleaner in sometime do so and note the difference.
Also a sticking EGR valve i.e stuck closed at highway speeds / passing / starts and stops can rob you of fuel economy.
If you know any half way good backyard auto mechanics they will know how to test an EGR valve with an external vacuum hose.
Thanks for using FixYa!
Kelly
Testimonial: "Thanks a lot. Already changed air filter but problem persists. Shall have to check the EGR valve by mechanics. Thanks again."
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