Xtreme

Sorry for the late reply, I haven't had a chance to get back to you until now. I have a narrowband sensor fitted and don't know how to configure it. I plan on adding a wideband sensor soon and adding an oil pressure sensor is a great idea and I will do that too so I don't destroy another engine. As an update; I got it running properly today finally. Whenever it was cranking the trigger wires were getting an intermittent broken signal due to a close proximity of leads and the coil. They are very sensitive and needed to be well clear. I have just ordered a coil on plug conversion kit to make it more reliable. It now starts, idles and stays running well. Log is attached if you are interested. Once the new coils are installed it will be off to the dyno. Thanks all for your help! PC Datalog - 2024-02-19 6;38;48 pm.llgx

It was a great running engine in an off road race buggy for years until I spun a rod bearing. So I rebuilt the engine and put in some large 284deg cams along with the Link ECU at the same time. I got it running on the stock ECU (it ran rough) before then installing the Link. The internal MAP is connected to the original 4age MAP sensor nipple off the intake manifold. Could the cams be causing the low vacuum? Edit: I forgot to mention that the injectors are stock size 250cc

Fixing the ECT sensor didn't help it. Today it wouldn't start at all. I think it is flooded now but besides adjusting the master fuel number down (which I tried numerous numbers) I don't know what else I should be adjusting

New injectors are in and it still would not fire. injectors were firing (tested with a noid light). I got it running on aero start and it ran better when I lowered the master fuel number. it then fired without aero start, and idled. However, after letting it sit for 10 mins it becomes difficult to start and needs heaps of throttle and will then eventually fire up. Timing is sitting at 15deg BTDC on idle. How do these 2 logs look? Is there anything that stands out that could be causing my issue? (please ignore the ECT as I had the wrong input set. The ECT is now reading ok) PC Datalog - 2024-02-12 6;24;43 pm.llgxPC Datalog - 2024-02-12 6;47;27 pm.llgx

I have a 92 model smallport motor with the more modern igniter (I used 3 wires). Pic of igniter is attached. The engine is in an off road buggy, I stripped the entire vehicle loom and made up a new one using the Link loom and the connectors off the Toyota loom. Injectors are all wired independently now. When I had the injector rail removed I tested the injectors with full fuel pressure and they only weeped out. I have new ones on the way early next week. In the meantime I'll spray some starter fluid tomorrow while cranking and see if it fires up

My ignition timing is set to 10deg BTDC. I have a narrowband O2 sensor but it was turned off for that particular cranking log (I have been trying different settings from different 4age base maps).

I'm running the stock 4age high impedence injectors. I'll have new stock ones to install in a few days. I'll upload a fresh trigger scope tomorrow as it's a bit late now. I have swapped wiring to the reluctor sitting on the cyl no1 post in the distributor and running an offset of -5deg. It is showing -10deg on the timing light when cranking

I have tried adjusting the master fuel and tried other fuel tables from 4age base maps. I have also just verified the ignition timing, valve/cam timing, I have fuel coming out the injectors and have a nice big spark on all plugs. The engine barely gives a kick when cranking. Is there something I am missing? Here is my latest base map and cranking log. (Battery voltage is starting to drop but only after endless cranking today). Edit: I have just ordered a new set of injectors as these only seemed to be dribbling out fuel when testing. They have been problematic in the past and needed ultrasonic cleaning PC Datalog - 2024-02-7 6;22;08 pm.llgx4age base map - modified.pclx

I haven't tried adjusting the master fuel. What would you recommend I try for it? The leads are in the correct order, I just checked them again to make sure

Hi Adam, I sorted out the trigger issue (it was getting the signal noise from the coil). I sorted that out and can get it running but it runs like crap. Timing looks correct with the timing light but it jumps around with the rough idle. I also have to keep playing with the throttle to keep it idling. It sounds like it is running on 2 cylinders. Can you see anything in this starting log I made or in my base map that looks off? Trigger Scope - 2024-02-3 2;50;23 pm.llgxPC Datalog - 2024-02-5 6;25;38 pm.llgx4age base map new.pclx

Thanks

Well I don't know what's going on.. I went out to start it up to check the timing and it is back to not firing. I can't even get the timing light to work on a plug lead (it intermittently picks up a signal on the coil lead but not a spark plug lead). Is there anything in this trigger scope that stands out? Trigger Scope - 2024-02-1 6;25;58 pm.llgx

So you think I should try again with an offset closer to 0 or 360? I have been using a timing light for every trigger setting I tried. I can set it close to 0 and put the timing light on and see what happens?

My distributor rotor (and tooth for the trigger) was pointing at the other trigger sensor at TDC for the cyl1 plug lead. The one I've wired up is 180deg out in the distributor. Advancing the offset 180deg was the only thing that got it it fire and run

I had the trigger offset 180deg out