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Starting Engine After Standing A While


nidgep
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hi guys

My Forester has been standing on the drive for around 6 weeks, mainly while I did some jobs on it.

During that time the car hasn't been started or moved and the Battery has gone flat, so I've removed it for charging.

I'm aware that once the Battery is reconnected that there is a learning 'process' that the ECU will need to go through to enable it to re-learn it's idling parameters.

My concerns are for the engine itself.

  • Having stood for this length of time will it be ok to 'just' start it up again (taking into account the re-learning process)
  • Is there anything I can should do to mitigate any potential rattles/wear during the initial start up?

As always your advice is greatly appreciated.

 

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on an impreza you can fairly easily access the cam sensor and just unclip the connector to it, my guess is the forrester is similar. I'd do that and crank it for 10 seconds to make sure oil pressure is good, then reconnect and fire it up. 6 weeks shouldn't be too much of an issue though in truth. It may be a bit grumbly till it warms up and might be worth just restarting the engine when its warm but other than that should be fine.

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Pop the crank sensor off is the usual way as there's no chance of it firing up if there's a bit fuel left in the rails .

 

Crank sensor plug (in tidgy's pic) is easy to get to and cuts ignition spark so it won't start but will turn over . This helps get the oil all round the engine to avoid any dry start up damage 😉

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Thanks for the updates.

One more question before I try to start it up?

I've not had the car that long, but the way it starts seems to me to be a bit 'old school'.

What happens is this:

Without touching the accelerator, turn the key, engine starts. The revs then immediately start to rise to say 1500 rpm (like an old school choke would). As the engine warms a little (or you gently blip the throttle) the revs start to lower and settle nicely when the engine is warm (or you drive the car).

Is this normal?

In contrast, my Octavia Scout (2008), just starts and immediately settles at 900rpm which is what I thought the Forester would do. Done diagnostic scans previously and there are no faults registered.

Again any advice welcomed.

 

Sent from my SM-G900F using Tapatalk

 

 

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30 minutes ago, nidgep said:

Thanks for the updates.

One more question before I try to start it up?

I've not had the car that long, but the way it starts seems to me to be a bit 'old school'.

What happens is this:

Without touching the accelerator, turn the key, engine starts. The revs then immediately start to rise to say 1500 rpm (like an old school choke would). As the engine warms a little (or you gently blip the throttle) the revs start to lower and settle nicely when the engine is warm (or you drive the car).

Is this normal?

In contrast, my Octavia Scout (2008), just starts and immediately settles at 900rpm which is what I thought the Forester would do. Done diagnostic scans previously and there are no faults registered.

Again any advice welcomed.

 

Sent from my SM-G900F using Tapatalk

 

 

Completely normal

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Thanks again for all of the replies and advice.

The car is up and running again now :-)
Removed the crank sensor connector, turned the engine over 10-15 seconds. refitted the crank sensor connector.

Turned it over again, started almost straight away, no rattling, sweet as a nut.

Only thing to add was that after removing and reconnecting the crank sensor, the engine warning lamp stayed illuminated and the cruise control lamp was constantly flashing.

After the car had fully warmed up,  I stopped and restarted. Engine warning lamp stayed illuminated and cruise control lamp continued to flash.

Stopped the car, connected the OBD reader, showed 1 fault - the crankshaft sensor. So reset it and restarted the car.

All good again now.

Out of curiosity, why did the cruise control lamp flash?

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