Now you might think that spraying lighter gas approaching a hot engine isnt wise, however the flash /ignition lessening of gas is virtually 400C thus you dependence a naked blaze or spark to set it off and Ive used this method for many years without incident. performance your habit through each doable joint one at a epoch and you should locate 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 adopt blast of gas into each area, especially those difficult to achieve past large implements.
Its furthermore worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a not a hundred percent pump will every repercussion in insufficient fuel physical delivered to the engine. Might as well as be worth cleaning out the idle speed run motor / valve as these acquire clogged taking place in imitation of carbon and some brake cleaner washed through helps forgive things off.
like I start the car, the engine surges occurring amid 1200 and 2000 rpm back up and forth. I changed the IAC and the TPS afterward no tweak in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to familiarize the idle speed screw to belittle the rpm and it would keep for a while. Now, the engine is forever surging to the reduction where I cannot steer it for buzzer of damage to the steer train. Any experienced solution?