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Stalling And Rough As On Startup

Djdirt

By Djdirt,
in Engines & Forced Induction

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Djdirt Apprentice

Djdirt

Posted
Posted

Ok,

now my car wont even idle or start-up.

recently lost my licence and havent been driving so i charged the battery and all was good, then about 1 week later i started it up and was running like crap (rough idle, black smoke, rich as) so i turned it off and tried again a few days later and it started and bounced around 300-500rpm for 10-20 seconds and stalled, black smoke and non burned raw fuel out he exhaust, f**k.

now it will start barley, maybe idle rough for a while and stall?

it is a series 1 r33 gtst with the folling specs:

rb25det

power fc

avcr

gt3076

555cc nismo injectors

z32

turbosmart 38mm ultragate

bosch 044

standard nissan coil packs

8.5 to 1 compresssion ratio

ross pistons

gtr rods

turbosmart supersonic BOV

ect.

have checked for vacuum leaks, checked bov, and i am stuck.

i have read other threads looking for an answer but most ppl seem to talk about stalling when you slam in the clutch and slow down which was happening to me too.

i am guessing it has to be no spark and/or dropped cylinders as unburned fuel is coming out exhaust? or AAC valve? or bov issue, but that should be ok with powerfc?

any ideas are much appreciated as it is driving me f'ing nuts.

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https://www.sau.com.au/forums/topic/296519-stalling-and-rough-as-on-startup/
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blind_elk Grand Master

blind_elk

Posted
Posted

When the battery starts to die, the ECU will cause the engine to run like crap because it gets confused by the high charge rate trying to recharge the battery.

You will more than likely have to replace the battery to solve the problem.

tigermm Apprentice

tigermm

Posted
Posted

Years ago my 180SX did this in a petrol station, fine when I left it to pay, wouldnt run when i can back out.

Once I towed it home I found the engine temp sensor connection was so corroded it was effectively unplugged, making the ecu think it was really cold and needed lots of fuel.

I guess the PFC still uses the stock sensor, might be an easy fix.

cactus Collaborator

cactus

Posted
Posted
Years ago my 180SX did this in a petrol station, fine when I left it to pay, wouldnt run when i can back out.

Once I towed it home I found the engine temp sensor connection was so corroded it was effectively unplugged, making the ecu think it was really cold and needed lots of fuel.

I guess the PFC still uses the stock sensor, might be an easy fix.

Wouldn't think it would be stale fuel. My old man had BP98 sitting in his tank for over 2 years... when he finally got around to starting the car on that fuel it was fine!

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