Now you might think that spraying lighter gas re a hot engine isnt wise, however the flash /ignition lessening of gas is approximately 400C in view of that you infatuation a naked flare or spark to set it off and Ive used this method for many years without incident. action your artifice through each viable joint one at a get older and you should find it. I use a slightly flattened piece of brake pipe and some rubber hose from the can of lighter gas to offer a spraying wand and allow a take in hand blast of gas into each area, especially those difficult to reach taking into consideration large implements.
Might afterward be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can accomplish a quick anomaly find if you unplug the meter and rule the engine without it. if the engine condition is the same later chances are the meter or the link to it is faulty. Its in addition to worth cleaning the MAF sensor wires, as they can get coated bearing in mind dirt greater than mature which subsequently offsets the reading. Use some entre cleaner or brake cleaner to vaporizer onto the wires to remove the dirt upon no account touch the wires in the same way as all as they are definitely fragile
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you stirring to date upon every maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms up and is warmed up? oftentimes in engine undertaking many factors may cause the same symptom(s)