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Hot Starting Problem on a Volkswagen Golf

No problems for the 1st 105,000 kms. For 5,000km have had a hot starting problem; replaced fuel filter and ECT sensor; diagnostics indicate no problem. Now found a work around - car does start hot if throttle is floored. Any ideas re the underlying problem?

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Well given that you have no fault codes and what you have changed already, we would suggest that you look at:

1. Fuel Pump Lift relay
2. Air Filter condition
3. ECU wiring/connections
4. Injectors
5. ECU programmimg
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