Quote:
Originally Posted by Dzmitry
Definitely a weird clacking noise, but doesn't sound like it is something serious to be concerned about... I hope  Not sure what it would be though, that's always hard to track down.
Your AEM fuel pump is supposed to be designed to withstand Ethanol no problem, but I have no experience with aftermarket pumps so I can't say much there. I just have a feeling it doesn't have so much to do with the fuel that sat in there (which you drained), but rather that something may be faulty.
I wonder if it would actually be helpful to just get a custom tune started right now to see if it solves your problems. Because with some of your aftermarket stuff in there, and a fresh rebuilt engine, something just doesn't seem to be quite right. But you had it running prior to the rebuild, so it doesn't make a lot of sense. |
Yea, I'm sure the pump is fine. I pulled the assembly and changed the fuel filter. To check the fuel pump, I purchased an adapter for the fuel lines with a 1/8 npt port for a fuel pressure gauge. it feels like there isn't enough fuel pressure? i don't know.
As for the tune, maybe it'll fix my issue, but I still think it's something small that I forgot or is broken. I want to say my stock PI injectors are bad. I pulled them and used this little device i saw from some youtube video that pulses the injectors if you connect to them to see the flow of them. Not really sure if the injectors are bad or not since they differently from one another. sorry for the video crap video but it was difficult by myself with this one. Doing this "cleaning" didnt do anything. Problem remains
Quote:
Originally Posted by FR-S2GT86
The one major change that I noted that OP made (in post #24) was dropping compression ratio down from stock 12.5:1 to 10.5:1 but he stated that his tuner said that shouldn't have an affect on the operation of the engine. Are we all in agreement with his tuner?
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Yes, I keep thinking in the back of my mind that my tuner might be wrong, but my tuner isn't just some random dude. CSG Zach is my tuner. He could be wrong but based on my power goals he recommended the 10.5:1 block.
I have asked him about this with a datalog, but only said it might be timing. he said this happens to alot of built FA20 motors. But I know i timed this motor correctly. No further info on his end about my issues.
Quote:
Originally Posted by Dzmitry
I do recall that and just took assumption that his tuner was right. I guess you make a good point, but I don't know enough about that to comment. Certainly wouldn't hurt to ask around or ask another tuner possibly for confirmation.
From a little googling, it seems that in the case of compression ratio increasing, a tune is kind of required to change the timing. Can't find anything on decreasing the compression ratio in that regard, at least not from a quick search. It's something to think about.
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I'd love to ask another tuner about this. I keep thinking it's the tune or ecu.
So i happen to just walk to film my engine and it does this. I was doing a datalog as well so there's data on it.
https://datazap.me/u/jrhudson/so-it-...37-46-50-51-52
edit: Still dies after the startup but will sometimes start up and have a somewhat weird idle and misfire a little and eventually go to idle rpm. I will drive it. I need to put the bash bar on there, and we'll see if the car can even move 1000 ft and back. Hopefully it'll either post a CEL or just fix it's lean condition.
Next thing I'll check after driving her is the spark plugs and ignition coil packs. i'll recheck the gap on my plugs. Theyre aftermarket as well, but per Zach these would be fine even NA.