Stu82 Posted September 7, 2021 Report Share Posted September 7, 2021 Hi. I have a Nissan 300zx and wonder if someone could scan through my trig and map log please. Self confessed ECU noob here, but learning! At best I've managed to get a little combustion out of her, but not started. The timing on the ECU I locked to 15deg with an offset of -345. This brought the crank pulley timing to 15degrees. I think I just can't seem to get the timing right. Ive tested all spark and fuel individually. Injectors are 1000cc so set fuel master to 6ms. If I add fuel via master trim (10%), I could barely crank it. I appreciate any support that could be provided. Thanks! PC Datalog - 2021-09-7 2_10_44 pm.llgx TriggerScopeLog2.llgx Quote Link to comment Share on other sites More sharing options...
Vaughan Posted September 7, 2021 Report Share Posted September 7, 2021 Have you tried a timing offset of 15 instead of -345? it is possible that you are sparking on the exhaust stroke of the engine instead of the intake stroke. Quote Link to comment Share on other sites More sharing options...
Stu82 Posted September 8, 2021 Author Report Share Posted September 8, 2021 14 hours ago, Vaughan said: Have you tried a timing offset of 15 instead of -345? it is possible that you are sparking on the exhaust stroke of the engine instead of the intake stroke. Just tried this and it barely cranks. Presumably all fuel, no spark. Also thought I'd blast through some offsets for clues; -180 - fast crank, no firing -200 - fast crank, no firing -300 - best bangs -310 - pops -280- pops and occasional bangs -290 - pops -320 - regular pops -330 - less regular pops 60 - turns slowly no combustion 80 - turns slowly no combustion I'm going to keep going, but concerned about endless cranking with no oil pressure. Quote Link to comment Share on other sites More sharing options...
Stu82 Posted September 8, 2021 Author Report Share Posted September 8, 2021 -40 and it's fired (need clean underwear - high rpm!) I wouldn't say it was bob on, but it's as close as I've gotten... Quote Link to comment Share on other sites More sharing options...
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