Questions & Answers for: Toyota MR2 lean mixture

...mixture lean (weak) My advice is first check you are not loosing any water/coolant and that there are no **** vacuum/air lines. My 2001 makes a high pitched noise sounds like it is coming from the ...

...is cold the ECU enriches the fuel mix initially to ensure a normal fast idle (1000rpm) before leaning the mix to drop back to 700rpm when warmed up. The following spring to mind as possible ...

...mixture side. Failing to the lean side would cause engine damage. On the rich side, the engine is protected from damage although fuel mileage will suffer. You may see black smoke while accelerating ...

...mixture with excess air leading to lean running. Lean mixtures lead to high combustion temperatures which produce NOx. A malfunctioning EGR valve will not recirculate enough exhaust gas to keep ...

... Hesitation upon accelaration. Could be a faulty position sensor or too lean fuel mixture. Take it for diagnostics, error codes will determine what needs to be replaced. It works out cheaper in the ...