Ecotec idles fine until booted

[brandonev111]

Hey guys I have a 02 vx Ecotec and on startup and normal driving it idles fine sounds perfect but after giving it a boot it will idle really roughly and stay rough until I turn it off and back on. Anyone got any explanations? Checked and cleaned maf, throttle body, air filter, spark plugs, leads. Just curious, cheers

 

[Immortality]

What did the plugs look like? all 6 look identical or was there a couple of odd ones? What is the plug gap?

Could also be a fuel pressure/flow issue, when was the fuel filter changed last? Tested fuel pressure?

 

[brandonev111]

What did the plugs look like? all 6 look identical or was there a couple of odd ones? What is the plug gap?

Could also be a fuel pressure/flow issue, when was the fuel filter changed last? Tested fuel pressure?

5 plugs identical, about a year old, 1 brand new coz it was snapped. Fuel filter replaced a year ago. Haven't tested pressure but it seems to be fine, pump was also replaced when filter replaced.

 

[brandonev111]

The plugs tips were all white which means running rich right?

 

[Forcedvp]

The plugs tips were all white which means running rich right?

No. running lean. Starved of fuel. Or plug gap

 

[Immortality]

No. White is lean. But these cars use lean cruise so very clean plugs isn't out of the norm. Black is normally rich. But really need to see them to be able to judge what they are suggesting.

Where is the new pump from? Cheap ebay? Test fuel pressure.

 

[brandonev111]

Ill try and take a photo of plugs this Arvo. And pump was from Repco, will try and get pressure tested