Thread: Starting Issues.

Could be leak back or leak down, Billy.

Originally Posted by V8Ian

Could be leak back or leak down, Billy.

That would affect the pressure when running Ian, and would probably trip the Fault: Insufficient pressure to supply demand. I dread that one. It snaps the throttle shut then puts it in to limp mode.

Is it hard to start on an instant restart?

Havn't tried that, but I suppose I should. Odd that the ECU records the event but does nothing about it. I suppose if the car doesn't start The ECU needn't take protective measures.

Could be indicative or just coincidence but we've had bucket loads of rain last couple of days. She goes in for service in a couple of weeks. She conveniently likes to brown her knickers around service time. Doesn't like the feel of a full wallet on her seats.

Originally Posted by cuppabillytea

That would affect the pressure when running Ian, and would probably trip the Fault: Insufficient pressure to supply demand. I dread that one. It snaps the throttle shut then puts it in to limp mode.

not always, if the leak back through the pump can be overcome by the pump once its running youve just got to crank it enough to get starting pressure up again.

leakout through the regulator is a different thing.

It could also be the low pressure pump being lazy.

Originally Posted by Blknight.aus

not always, if the leak back through the pump can be overcome by the pump once its running youve just got to crank it enough to get starting pressure up again.

leakout through the regulator is a different thing.

It could also be the low pressure pump being lazy.

Thanks Dave. I've experienced the low pressure pump tardiness issue before. It resulted in a high pressure pump failure. The high pressure pump having to suck the fuel all the way up from the tank was too much for it. That was expensive. As I mull it over I lean more and more to the sensor taking too long to register the pressure. because once the engine is running, it functions normally. At that time I suspected leak back but it was the pumps, and that issue didn't cause a long engine starting time issue.
The ECU's reaction to that is to shut the throttle valve and assume limp mode, which is quite dramatic if you're at full noise.
It should be noted that before I crank the engine, I turn on the ignition and wait for the lift pump to stop. It only takes a few seconds and I can be assured it's functioning properly.

If its cranking speed is slightly slower than you are used to i'd guess it needs a starter motor.
If cranking speed is normal and injectors have not been replaced or was round 100K ago, then its time for new injectors.

The 2.2 eats injectors round 100K.
The 2.4 round 150K.

both can give a slight engine clatter when cold but also once right up at normal engine temps.