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Old 9th September 2022, 09:08 PM
ainarssems ainarssems is offline
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Join Date: Aug 2010
Location: Rushden, Northants
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Seems like you covered most bases. I have no personal experience with petrol not starting when warm. 1st thing that came to my mind it runs too rich or flooded when when warm because some injectors might be leaking but you already changed them. Next would be crankshaft sensor but that has been changed as well. Now I know some Vag diesels experience this problem because there are minimum rpm to start injection when cranking and the minimum is different at different temps with higher temps requiring more rpm before injection starts. When the starter or battery or both get aged at high temps sometimes they don't reach minimum rpm to start injection. The solution is usually either changing starter or remapping ECU to allow injection to start at lower rpm. I don't know if petrol engines have similar limits. I would start with test light or oscilloscope tapping into injector and coil wires to see if they are firing followed by crankshaft sensor.
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