Dear readers,
I just replaced the timing belt on my Golf IV SDI, engine code -AGP-. Now, I want to use the VAG COM tool to check the fuel injection timing.
'Where can I find the diagram showing the start of fuel injection (as a function of fuel temperature and other factors)? In the past, this was often done using a micrometer. Unfortunately, I'm not quite familiar with VAG-COM yet, and most importantly, I'm missing the diagram.'
Are there any SDI owners who have the wiring diagram for the Golf IV? Unfortunately, the Polo has a different diagram.
Thank you very much.
Translated on 17-10-2026, 3:13.
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