Please help. First 45-60 seconds of cold startup problems.
Thread Starter
Joined: Nov 2001
Posts: 10,813
Likes: 15
From: Doylestown PA
Please help. First 45-60 seconds of cold startup problems. Ok, I've read, read and read some more. I've searched, but no luck.
When I do a cold start, it searches bad for 45-60 seconds then settles in. The problem is, that it searches so bad, that it stalls most of the time if it's too cold.
I don't think it's a RAF fueling issue, because at the beggining of the cell, it's adding some fuel, but by then end of the cell it's pulling. Also, it's still in the same cell when it stops fluxuating.
Here's tune and data.
When I do a cold start, it searches bad for 45-60 seconds then settles in. The problem is, that it searches so bad, that it stalls most of the time if it's too cold.
I don't think it's a RAF fueling issue, because at the beggining of the cell, it's adding some fuel, but by then end of the cell it's pulling. Also, it's still in the same cell when it stops fluxuating.
Here's tune and data.
I had to tamp down the afterstart enrichment, after the cam
swap. Also worked a little with the friction airflow adder & decay
to keep it happy short-term, but fat fueling always makes for a
less stable idle.
swap. Also worked a little with the friction airflow adder & decay
to keep it happy short-term, but fat fueling always makes for a
less stable idle.
