Quote:
Originally Posted by JLMounce
You can try an insulating spacer under the sniper to help with that.
It sounds like this is a crank and no start issue after a short heat soak.
What may be happening is that as the car sits for a bit and soaks some heat, the fuel film that clings to the intake manifold runner and for which the ECU in the throttle body calculates some fuel usage, may be evaporating.
As a result, when you go to hit the key, the car cranks over but the throttle body is not providing enough fuel initially to both re-wet the intake manifold and start the engine. Typically you'd get a symptom of endless cranking, or the engine may fire, stumble and die.
If that's what is happening, you need to look at your hot cranking fuel in the tune. You may need to make some adjustments there. To figure out if you need to add or remove cranking fuel, complete the following test.
When hot and heat soaked, attempt to start the engine. If adding a small amount of throttle helps the engine start, you have too much cranking fuel and need to reduce it.
If adding throttle does not help the engine start, you are lean and need to add hot cranking fuel.
|
Pretty sure this is my exact problem. That was actually my next step. When I did the tune I wasn’t factoring in the heat soak. So I’m gonna put the 185 thermostat back in move my fuel lines and use a heat shield and spacer. I may adjust some on the fans on and off temp and see what happens. Thanks for the suggestions.