Rb25 Intermittant Cutting Out When Hot On Track

[NICKCEFFY]

ok guys i need abit of help mainly places to start looking with my laurel which was having a few issues on Saturday at a drift day,

Car: nissan Laurel

Motor: series 2 RB25, ignitor on coil type

Mods: greddy copy plenum, tr43 turbo, split fire coils, AFM in cold pipe before throttle, extended wiring over engine bay , XF falcon throttle with tps sensor, mostly stripped wiring loom, Power FC computer

Problem, started off the when i'd throw the car in for a scando it would cut out for a second or so then accelerate again, thought it was the

fuel pump as it was very noisy (not a usual loud hum, sorta a gurgling type sound) so changed that out with brand new 040 and went back out on the track. car ran for about 6 or so laps fine then it started to cut out again but this time i would only have to start accelerating (putting load onto the engine about 3/4 throttle type thing). the cut out was like the car turned off, it didn't cough or splutter blow smoke or any of the usual suspects for like a blown cooler pipe or vacuum line. and the only length of silicon joiner is the 2inch 90degree bend coming off the turbo everywhere else is steel piping, bends etc and just short joiners. metal induction pipe and air filter a one of the drift type solid shape

So now i'm confused, first thought after the fuel pump was the ignitor but as these are on the coils on this motor it wouldn't cut out like it is i would have thought, next would be afm but before i start going over everything i just wanted to check if there may be another problem i could be overlooking.

any help would be appreciated, i've never had an issue like this before so i'm stuck

[lachlanw]

how much fuel was in it and how did you install the 040

[NICKCEFFY]

tank was 3/4 full, and swapped the pump over directly in the cradle same in same out type thing

[NICKCEFFY]

anyone got any ideas?? please....

[boostn0199]

Im pretty sure similar thing happened to me on the weekend at the track. After a few runs suddenly sometimes as I downshifted to gear 2 and pumped it out of the corner its like the car just stopped and didnt do anything then let off the acclerator and pumped it again and it went, not sure what it was but yeah changed to spark plugs just for the sake of it hasnt done it again but then again it only did it a few times.

[NICKCEFFY]

hmm musta been the weekend for it, cause yeh thats exactly like what was happening to mine, I'll pull the plugs and have a look at them

[boostn0199]

I was thinking aswel it could be a fuel pump issue but Ive got a nismo fuel pump so the mounting and all that shouldnt be an issue since its direct drop in and I had plenty of petrol, and it sort is like a missfire cuase it just stops the car and it like its stuck but yeah my plugs were pretty old so I guess it would be the cheapest thing to check first.