allroad 2.5tdi poor hot starting
12-13-2016, 12:53 PM
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allroad 2.5tdi poor hot starting
Hello, i have a 2.5tdi auto allroad bau engine 2004 year which will start when cold but is very difficult to start when hot . Any help or advise appreciated as local audi garage cannot find any fault with diagnostics. regards john
12-21-2016, 04:36 AM
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I'll repeat.
Provide check of compression. If values will be less 27 bars - you need make a service of block heads. I mean all 24 valves must to be cleaned and machining (including valve guides и seals).
If compression values will be more than 27 bar - you need check revolution's of starter during starting. Stator of starter have a permanent magnets which can lose technical properties, especially when engine heated.
If it is true - you have two way.
1st - renew starter or stator of starter.
2nd - forget about it.
Provide check of compression. If values will be less 27 bars - you need make a service of block heads. I mean all 24 valves must to be cleaned and machining (including valve guides и seals).
If compression values will be more than 27 bar - you need check revolution's of starter during starting. Stator of starter have a permanent magnets which can lose technical properties, especially when engine heated.
If it is true - you have two way.
1st - renew starter or stator of starter.
2nd - forget about it.