Hard Cold Starting

[DaveWertz]

So even before I went supercharged ive always had a problem with cold starts. I have to feather the throttle for about 2 or 3 min before it would stay on idle. I thought after going boost and tune it would clear up but it still persist. Ive tried to look for vaccum leaks, made sure everything is hooked up but came to a dead end. Its fine if ive been driving, turn it off it will come on idle right away. Its only a true cold start or if its been sitting for an hour+. Any ideas?

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[Crimson2v]

possible fuel injectors or fuel pump leaking down after sitting. That’ll cause hard starts cold.

 

[DaveWertz]

possible fuel injectors or fuel pump leaking down after sitting. That’ll cause hard starts cold.

I could see that but did it before beggier injectors and fuel pump.

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[Crimson2v]

Any loss of coolant? You could have a head gasket leak. Also are you burning oil? Might have some valve guide seal leaks.

 

[DaveWertz]

Neither of the 2. Motor is fresh with under 4k on build. Never have to add coolant nor do I loose any oil between changes

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[Tabres]

I'm more inclined to believe its in your tune. Cold start enrichment and IAC control.

 

[jman37]

I just went through a whole sh!t storm of similar things, and it ended up being my dyno tune, due to an unbeknownst boost leak that I had when I got tuned. So, you might have a leak somewhere on the motor, manifold gaskets, vac lines etc.