phuatw

My Lexus Rx350 (2007) having problem starting the car when the engine is cold or switch
off more than 1-2 hours. I need to crank the car at least 2-3 times to get the engine run.
Once the engine run, i have no problem restarting the car with a single crack.

Regards Henry

kickin8

iTrader: (1)

Have you replaced your battery?

LSBen

Maybe your fuel injectors are clogged. Try a bottle of fuel injector or fuel system cleaner. It can't hurt.

mmarshall

Welcome to CL.

Could be any one of a number of things. Weak fuel pump, clogged injectors, coolant-temperature sensor, throttle-position sensor, or others. Is the CHECK ENGINE light on?...that could signal a bad sensor, or a series of tests that need to be for that computer-code.

HtownBlue

Without seeing the fuel trim numbers just after cold start, it will be hard to diagnose. It's normal for the engine to have to crank over a slight bit extra after sitting for a while if you immediately turn key and try and start. Fuel pressure takes about a 1/4 second to get up to normal after sitting a while. That said, you could have a lot of things causing this. Hard to say without looking at the live data when cranking up.

tomit

Agreed - do it each oil change.