Now you might think that spraying lighter gas as regards a hot engine isnt wise, however the flash /ignition lessening of gas is about 400C correspondingly you obsession a naked flare or spark to set it off and Ive used this method for many years without incident. proceed your pretentiousness through each viable joint one at a epoch 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 present a spraying wand and permit a focus on blast of gas into each area, especially those hard to attain in the manner of large implements.
Its also worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a sick pump will all upshot in insufficient fuel bodily delivered to the engine. Might as well as be worth cleaning out the idle speed manage motor / valve as these acquire clogged up afterward carbon and some brake cleaner washed through helps free things off.
taking into consideration I start the car, the engine surges happening in the middle of 1200 and 2000 rpm incite and forth. I misrepresented the IAC and the TPS bearing in mind no correct in symptoms. I have noticed that several Lexus SC's have this similar issue. Prior to this I would have to become accustomed the idle keenness screw to belittle the rpm and it would support for a while. Now, the engine is continuously surging to the point where I cannot drive it for dread of damage to the steer train. Any experienced solution?