Help! Fresh Rebuild Suddenly Ran Lean and Wouldn't Accelerate
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From: Texas
Help! Fresh Rebuild Suddenly Ran Lean and Wouldn't Accelerate
Hello everyone. I have a 10th Anniversary FC with less than 8k on it's rebuild. Street Ported, and quite heavily modded. Long story short: I was driving home last night, not necessarily in a more spirited manner than usual, and all of a sudden I got no power while on the throttle and my AFR started climbing to 18-19. Only light throttle would keep it going until I could pull in somewhere. I thought, no big deal, just ran out of gas because that's exactly what it felt like. Didn't know for sure because gauge isn't hooked up. But there were no catastrophic sounds or anything unusual. Filled it up, cranked it, and it idled normal with a normal AFR. Could even rev it up all the way. However when I started driving and shifting into second, it would just cut out at what seemed like 3000 RPM and die. I was very close to home so once I started it again I just light throttled it in second to my house with around 19 on the AFR, it would die in 3rd no matter how light of throttle. If anyone could please help with some insight it would be greatly appreciated. Also, car has only been running on two injectors, but I have it set up totally fine and it's been this way for a while. Secondaries went out but didn't bother because honestly 500hp is unnecessary to street around in. So if anyone has any ideas that'd be awesome! I hope my rebuild isn't already toast... everything is fine while idling and it was running very strong before this came out of nowhere.
Last edited by Jesse J.; Jan 23, 2019 at 07:15 PM.
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From: Texas
FOUND THE ISSUE: Fuel leak?! Cranked it today and when I stopped i heard fuel rushing out from somewhere, I think one of the lines because there was a ton. Anyone know if this could have been bad for the engine if I drove it a short way in this condition? Like I said, didn't hear anything catastrophic and it idled just fine.
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From: Illinois
If you didn't hammer it and run lean for a long period under load, then the odds are in your favor and you probably didn't tear anything up. If you really beat on it then that's probably not a good thing. Sounds like you didn't so get that fuel leak fixed and giver it a shot!
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From: Texas
@WobblyBobbly Thanks! Okay. I hope so. I didn't hit boost or anything but I did have to give it quite a bit of gas to keep it alive at some points. Would there have been any signs that you know of that would signify it blowing? I found the line by the way, definitely got mangled. If all is well after I replace it, should I continue to enjoy it as usual or should I still compression test? Just don't have easy access to one unfortunately...
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