R33 Rb25Det Problems

[Curtis_B]

i have a r33 and have a problem with it

at idle it runs rough. On light acceration its goes ok but coming on boost it miss fires if you stomp on it it just splutters. Just replaced coilpacks, spark plugs, fuel filter, air filter and cleaned the afm with crc brand maf cleaner. but still have the problem this is a small list of the mods

greddy plemium

apexi power fc

z32 afm

hks turbo

tomei cam gears

fmic

3'5 zorst

any help

[DAN-33]

Tried cleaning the ACC section at back of the inlet manifold?

I did that and its amazing the amount of gunk comes out. mine runs so much better, and holds idle.

[Curtis_B]

will try tommorrow thanks

Edited November 2, 2012 by Curtis_B

[DAN-33]

will try tommorrow thanks

http://www.skylinesaustralia.com/forums/topic/110431-diy-aac-valve-cleaning-idle-reset/

[DJRIFT]

Would be worth checking fuel pressure. At idle and driving.

[Curtis_B]

i cleaned the acc section and didn't help

[zoidbergmerc]

Check for vacuum leak too?

[Josh080691]

Check ur pfc bud mine did same thing til i sent it off to apexi

[Curtis_B]

what was the problem with it ? what did that cost ?

[Josh080691]

To send back to japan for repair about $200

[do_a_skid]

My R33 ran exactly as yours does, also had roughly the same mods.

Does yours blow smoke? Mine did once it hit boost, ran really rich too. I've been told a possible melted piston but haven't taken it apart to look yet.

[andogtr]

Is the pfc software set to the z32 afm make sure the plug gap is .8mm and check if the wiring to the z32 afm is right you can read the plug wrong from left to right had a car in the

other day with same problem all it was was the afm wiring was wrong if ths is all ok check fuel pressure and the tune

[Curtis_B]

def woulnt be a melted piston it wouldnt go do_a_skid

andogtr z32 air flow meter has always been in the car and tuned to the power fc. it only started this problem a few months ago it just got worse. i regaped the old plugs and cleaned them and put them back in and now goes hard. but it did that with the new plugs for a few days then went back to how it was. so might be fowling the plugs ? the new ones i pulled back out are really black and sooty .

[andogtr]

Well Curtis you are getting some were sounds now like the tune and fuel pressure need checking i actually dyno tune and fault find for a living done alot with pfc s if you need to run it on our dyno we are in ulverstone at southside on 64259320 your only in burnie arnt you so wouldnt be much of a hassle to look at your car for you Cheers and good luck

[Curtis_B]

what kind of price would you charge to tune it ando. would that include adjusting the cam gears and timing etc ?. I already got a price from turboworx in launie and confidyne

[andogtr]

Charge $100 p/h for dynoing done about 50 pfc s over the time and only need 1 days notice for booking not sure on how many hours it woud take about 4 to 6 maybe

[TJHill]

Yea post up if tune fixes it. My stagea is doing the exact same thing. Hand controller says it leaning out on output (-12). Valves have been opened to maximum when previous owner had it tuned by fuel tech in Launnie.