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Title: Massive timing retardations on stock 1.8T BEX. Post by: razor1199 on June 16, 2021, 01:00:32 PM Hello there,
I'm struggling with 1.8T BEX, car came to me with too low boost, I've checked everything, seemed ok, I also noticed too much timing retardations on all cylinders, we decided to remove cat, for my suprise almost nothing changed , about 50mbar gain of boost, I found that WG actuator is opening too early, I have adjust it, but adjustment range is over, I know WG actuator needs to be changed, anyway I have my boost, let's say, "back" to stock again, but there is about 10KW retardations :(( Spark plugs are brand new. I have done some logs in ME7Logger, what I see there is IDC high, propably bad fuel pump? Or bad injectors? Tommorow I will do a measure of fuel pressure. Anyway retardations are high at mid range RPM, I don't exactly know what to next, excluding checking fuel pressure. Here are 2 logs, first with MAF plugged, second with MAF unplugged. Car is totally stock, just catless. Could you help me? Please :) Title: Re: Massive timing retardations on stock 1.8T BEX. Post by: BlackT on June 16, 2021, 01:43:28 PM How much octane?
When I have BEX full stock, all okay. On bad fuel in summer days I was geting 6 KR on all cil Title: Re: Massive timing retardations on stock 1.8T BEX. Post by: razor1199 on June 16, 2021, 02:22:35 PM I belive it's 95 octane (EU), I could take it if it would be 6KW, but 10? I feel it on the way, It's nearly knocking. Also I'm run out of injectors without any modification. Today was also only 26C degree outside :(
Title: Re: Massive timing retardations on stock 1.8T BEX. Post by: BlackT on June 17, 2021, 12:11:58 AM You are not running out of injectors. Fuel sistem is good, You have AFR lower than 10.8
I was not able to get rid of knock before putting 100 octane + 15 etanol. It was not caused with any mehanical problem, at least i could not find any (year after I disassembled whole engine to change rods) http://nefariousmotorsports.com/forum/index.php?topic=16584.0 Title: Re: Massive timing retardations on stock 1.8T BEX. Post by: Blazius on June 17, 2021, 12:53:25 AM Run toulene concentration.
Title: Re: Massive timing retardations on stock 1.8T BEX. Post by: razor1199 on June 17, 2021, 01:12:43 AM You are not running out of injectors. Fuel sistem is good, You have AFR lower than 10.8 I was not able to get rid of knock before putting 100 octane + 15 etanol. It was not caused with any mehanical problem, at least i could not find any (year after I disassembled whole engine to change rods) http://nefariousmotorsports.com/forum/index.php?topic=16584.0 Did the rods help? :D I saw there is 100% IDC at end of measurements that's why I thought I'm out of injectors. Run toulene concentration. Do you mean I should add toulen to the tank ? |