J
Sled starts first pull most of the time, but if I shut it off for 10-15 minutes after I've been running it hard it can sometimes take 4 to 5 pulls to get it started again, I searched around a bit and found the post below which is relevant. As I only have the issue when running the sled hard it seems I may have the "boiling fuel in the injectors" issue, which doesn't seem like something that can be solved.
Diagnosing a fuel pressure regulator that leaks fuel pressure off after shutdown would just involve installing a fuel pressure gauge in the line from the pump to the injectors. I'm told pressure should be 42-46 PSI depending on altitude, anyone know of a low cost gauge to use for this?
What about injectors leaking into the combustion chamber? Is that ever an issue? I doubt that is what I have going on as the sled won't cough in the slightest on the first 3-4 pulls, but starts up pretty well when it does decide to fire.
The sled has 1,400 miles on it.
Diagnosing a fuel pressure regulator that leaks fuel pressure off after shutdown would just involve installing a fuel pressure gauge in the line from the pump to the injectors. I'm told pressure should be 42-46 PSI depending on altitude, anyone know of a low cost gauge to use for this?
What about injectors leaking into the combustion chamber? Is that ever an issue? I doubt that is what I have going on as the sled won't cough in the slightest on the first 3-4 pulls, but starts up pretty well when it does decide to fire.
The sled has 1,400 miles on it.
Seems that there's three options here:
1. Fuel pump
2. Fuel pressure regulator
3. ECU/updates.
A friend of mine has a 15 800etec, his was HORRIBLE to start warm. Many pulls, even some throttle. Sucked. His was fixed with an update. His sled came in early, he picked it up early, and it never got whatever update fixed that.
My 13 800etec did the same thing a week later. Mine was the fuel pressure regulator - it popped out of its socket. Mechanic reaffixed it with some fancy washers to keep it from happening again.
The other common culprit is the fuel pump. Basically, what happens is simple - the pump/regulator assembly does not hold pressure after shutdown. When it is hot (normal operating temperature), the fuel in the injector boils, making it hard to start. Once running, it is fine. I did verify that with my mechanic - if the pump makes enough volume to run, it'll be fine, it is not going to go lean, you just have to fight the boiled fuel to get it going.
So...yeah, take it to dealer.