ahh the fun of rb's lol stalling problems .... rough...lost ... video inside

[preston240sx]

ok just put my rb back together got i it running but its not smooth by far runs ok on first start up then going down hill ... can anyone shot me the common problems rb's face i have all the vaccums plugs that need to be plugged have the charge pipig nice and clamped what are sum other idea's i can hear the turbo whining like there's no piping on it ... just at a loss of words ... an idea's

[Yellow4g63]

ok just put my rb back together got i it running but its not smooth by far runs ok on first start up then going down hill ... can anyone shot me the common problems rb's face i have all the vaccums plugs that need to be plugged have the charge pipig nice and clamped what are sum other idea's i can hear the turbo whining like there's no piping on it ... just at a loss of words ... an idea's

That's kinda like what mine is doing. cept mine will idle if I take off the huge vacuum line on the intake manifold going to the break booster. Yours sounds a little easier to diag than mine. Stock injectors? Maf? chipped ecu? Have you tried unplugging the maf to see if it will idle?

[preston240sx]

yeah i have unplugged the maf no change ... im running 440 gtr injectors ... without a tune... i know its gonna run super rich like that but my tune is coming next week just trying to get it running straight before the tuner guy does his thing... im stumped because of the turbo whinning i can hear ... which leads me to think i has a piping or coupler leak .... .... car ran fine and idled ok when i first started it then it got alittle warm and all that went away ... lol the search continues

[Yellow4g63]

Try unpluging the coolant temp sensor too. Did u take the intake manifold off at anytime? and when u try to start it and it runs can u give it gas to raise the rpm's? or does it just break up and sputter real bad.

[preston240sx]

have'nt had the intake off since the rebuild even then it was'nt torn apart just set aside ... as for the reving its kinda a half rev runs.. ok with the spit and sputter mixed in ... i'll try the temp senor though anything will help maybe

[Yellow4g63]

Is the computer throwing any codes?

[preston240sx]

im going to check first thing in the morning i dont wanna fire the old beast up with the exhaust off at the downpipe scare the old lady next door lol i bet its something little im just overlooking it ...

[240z4u]

Your turbo is loud because you have no exhaust connected.

[RustspecS13]

You went from 270cc injectors to 440cc injectors. You NEED that tune. Your going to dump so much fuel through the injectors it'll wash down the cylinder walls and the rings will scrape since the fuel washed the oil off.

Untill then it'll run like crap. Make sure you don't have any boost leaks because that will cause big issues too.

~Alex

[preston240sx]

yeah the tune is coming jason from Emance Tunning is doing it but he's outta town this week for the La auto show i gotta call him tomarrow. as for the injectors i would go back to stock and change out them back to get it running straight but i dont wanna pull the intake off and rewire the injectors back and remove the resistor pack i'll check the oil and stuff for signs of fuel i should ok have'nt ran it long maybe a total of 5min when it wants to run lol ... ima check codes and put exhaust on and see whats up after that ... i'll keep everyone posted thanks for the input so far

[preston240sx]

turns out it was the no back pressure.... runs rich but its sounds smooth

[Yellow4g63]

So you hooked up your exhaust and it started up?

[preston240sx]

well it started before but after i hooked the exhaust up it idle's fine now just super rich lol dropping my ecu off tomarrow at Emance to get a tune from jason also checked the ecu for codes flashed a 55 at me that means all good... so its all good and so far im happy with the rebuild

[preston240sx]

dropped my ecu off with jason today said it will be done tomarrow but i have work so im picking it up tuesday cant wait to see how my rb feels with alittle extra ummmmphhh