- Thu Aug 19, 2021 10:22 pm
#52596
Maybe you mixed up metric and imperial values with the fuel settings?
neovin wrote:how are the injectors wired to the ecu? individually? you can run sequentialI was actually having a problem with tuning for idle. If I let the VE box go to say 30-40 the RPM will start to rise. At 30-35 the RPM is at 1500 and adjusting the idle valve duty % won't change it. My AFR at with 74 is at 10, while idling at 850-1000. The stock idle speed is 850, but I don't know if I should try to go lower.
make sure the correct injector is firing to the correct cylinder, speedy outputs from 1-4 and does not correlate to actual cylinder same with ignition.
Also 74ve in idle tables with 750cc injectors, that is a massive amount of fuel, my 1.8 with 300cc takes 25-30 ve to idle smooth
LPG2CV wrote:Tooth logs are of little use at this moment. You need logs of the afr, advance etc. So click on Data Logging - Start Logging.Yeah I should of taken a log of cranking. At least I rectified a problem with my obsession of trigger logs.
For the Injector Prime to work, it needs to be set after the end of the Fuel Pump prime. So if FP prime is 3 secs, then Inj prime could be 3.1 secs. The FP prime moves fuel around to purge air and return and warm fuel to the tank as well as getting the fuel pressure up. The Inj prime adds a small amount of fuel to give it an initial shot of fuel. As PSIG suggest, ignition ON, FP prime, Inj prime, Ignition OFF. Repeat. Gives extra shots.
if you put the VE table on screen when you are cranking. Look where the indicator is pointing. That will give you an indication of the current VE that other values are acting upon. Note that, unless you are at altitude, with your foot on the accelerator pedal a little, the indicator should show about 100kpa. If the throttle is closed it will be further down the scale dependant of you engine vacuum. My point being it changes with throttle opening.
When you get it started, your first task is to set the trigger angle correctly with a timing light. After that, data logs are your friend.
theonewithin wrote:You should be checking trigger angle before trying to start.Yes I did confirm the crank offset angle, it was 70*.
To at least.make sure you are in the ball park of being correct.
Billboswaggins wrote: ↑Tue Sep 14, 2021 4:40 am I'm not sure what you mean by your second point. kPa at rest is ~100, at idle it's 40-50. Should it be lower or higher?It should be the lowest MAP you can attain, at your target warm idle RPM.
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