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FC n/a fuel issue?

Old 10-28-13, 09:18 PM
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FC n/a fuel issue?

So this weekend the FC ran into a problem at the track. It had a really rough idle and was plowing black smoke out the *** end. Idle was super choppy and throttle would need to be held open in order for the car to not die. We figured it was the fuel pressure regulator just dumping fuel in so I picked up another one at PnP.

Today I put the "new" one on and now it just doesn't want to start now.

Any suggestions?
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Old 10-28-13, 09:55 PM
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Originally Posted by AngelsAndBombni609301
So this weekend the FC ran into a problem at the track. It had a really rough idle and was plowing black smoke out the *** end. Idle was super choppy and throttle would need to be held open in order for the car to not die. We figured it was the fuel pressure regulator just dumping fuel in so I picked up another one at PnP.

Today I put the "new" one on and now it just doesn't want to start now.

Any suggestions?
Black smoke... I remember my budds fc infront of me bowing balck smoke outt the ***.. he then went turbo 2 lol

for a safe piece of mind perform a Compression test..
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Old 10-28-13, 10:21 PM
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^ that and its always worth it to check your plugs. ive seen a lot of weird issues be fixed or at least get much better just by adding some fresh plugs haha
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Old 10-28-13, 10:29 PM
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Just took it all apart and the mothafuckin plugs were more soaked than a hookers pants. Hoping new plugs/fpr fixes it.
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Old 10-28-13, 10:53 PM
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Wet on all fo's.

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Old 10-28-13, 11:22 PM
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Modello
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Old 11-02-13, 02:18 PM
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So I ordered new plugs, hopefully that fixes the issue.

My oil seems to have a bunch of fuel in it also. Any suggestions on what could of happened?
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Old 11-02-13, 05:06 PM
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2 very possible reasons:

1. normal blowby
2. fried oil control rings

judgement depends on the amount of fuel contermination and/or oil usage of the engine

do a compression test... this should be preventive maintenance for our engines
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Old 11-04-13, 11:12 PM
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So messed around with it earlier today. Took a fuel press. gauge to it and everything seemed to be normal. We shut off fuel for a second to it'd burn everything out, then turned it back on then it finally started. Its just dumping massive amounts of fuel and won't stop smoking.

My trailing plugs seem to be the ones that are getting wet, and leading seem to be ok.

Heres a video of it idling. No, thats not a port job.

https://vimeo.com/78601698
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Old 11-05-13, 09:24 AM
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I would check the coils to the leading. Make sure there working. And did you change plugs? Seems like something small. Maybe a stuck injector or bad injector driver if its a s4. Doesn't sound like a bad motor. Sounds like ignition to me..
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Old 11-07-13, 02:56 AM
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Switched out the injectors today, forgot my keys at home so we hot wired it and attempted to start it. It sounded good for about 2 seconds and cut off. Probable cause is Mazdas security system on the car needing an ACTUAL key in the ******* ignition to start.

Next step: DONT FORGET MY KEYS TO START THE CAR.
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Old 11-07-13, 01:52 PM
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You can take the ignition switch out and start it with a flat head takes 5mim
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Old 11-07-13, 02:12 PM
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is your tach working?

check your timing, your trailing coils, your AFM, and your injectors.
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Old 11-07-13, 03:31 PM
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Originally Posted by AngelsAndBombs View Post
So messed around with it earlier today. Took a fuel press. gauge to it and everything seemed to be normal. We shut off fuel for a second to it'd burn everything out, then turned it back on then it finally started. Its just dumping massive amounts of fuel and won't stop smoking.

My trailing plugs seem to be the ones that are getting wet, and leading seem to be ok.

Heres a video of it idling. No, thats not a port job.

https://vimeo.com/78601698
My tii was brapping badly and and smoking worse than that and it was the VAF, it looked like it was fully clipped in but it wasn't. I would meter it out just to be sure.
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Old 11-07-13, 06:43 PM
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Looks like a had dookie *** primaries. CAR IS ALIVE!

Appreciate everyone's suggestions/help.
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Old 11-07-13, 07:47 PM
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glad to hear, my buddy is having a simmilar issue on his N/a so now we will check the injectors and see if they are **** or not
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