Engine wont start when hot, cold start ok
#1
Engine wont start when hot, cold start ok
Hi,
The engine is bp-z3 with megasquirt 2 pnp. Coils, trigger, etc original bp-z3. Swapped on na.
The car has been running and starting fine for years but has now developed an issue when starting hot.
If I start the car when engine is cold or has been sitting for over an hour, it starts ok. When I start the car immediately or in 10 seconds after turning off it starts ok.
But if the car sits for approx 1-15minutes when turning the engine off, it wont start. Will have to wait for approx an hour and it starts just fine.
Changed all the engine related relays, fuel pump is turning, changed coils, plugs, but these didnt help.
I took a datalog when trying to start the car when its not starting. I'll attach it.
Any ideas what could be wrong or malfunctioning?
The engine is bp-z3 with megasquirt 2 pnp. Coils, trigger, etc original bp-z3. Swapped on na.
The car has been running and starting fine for years but has now developed an issue when starting hot.
If I start the car when engine is cold or has been sitting for over an hour, it starts ok. When I start the car immediately or in 10 seconds after turning off it starts ok.
But if the car sits for approx 1-15minutes when turning the engine off, it wont start. Will have to wait for approx an hour and it starts just fine.
Changed all the engine related relays, fuel pump is turning, changed coils, plugs, but these didnt help.
I took a datalog when trying to start the car when its not starting. I'll attach it.
Any ideas what could be wrong or malfunctioning?
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