problem, need some help

mustangkilla

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i have the greddy kit on my 99 ex and recently it just started kinda putting when im under boost and hesitating, i think its a fuel problem but im not sure, i have the emanage and im runnin stock injectors, anyone know what this could be?
 

evan2

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lack of fuel, detonation, most likely your just running lean
how much boost, i would look into bigger injectors and a 225lph fuel pump
 


evan2

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or you could just be mis firing how does your ignition side of the house look? IE honda stuff dont rush to get aftermarket you dont need it
check plugs, not sure what your stock heat range is since itsa d series but i would step it up one
if your stock range is 6 like the gsr get ngk 6097 its a bkr7e
 

mustangkilla

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im at 7lbs of boost and i just have an msd box and ngk iridium plugs, i have had my plugs for only a year could it be them b/c i have only been boostin for 2 months?
 


evan2

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well iriduim isnt good with boost, not bad but platinum and irid burns hotter
copper is a colder metal and the only thing i would run for boost

get some ngk 6097s..

msd box is not needed but you got it...

how is your distributor, plug wires etc
check them out


its going to most likely be fuel or ign
 

mustangkilla

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u think it could have anythingf to do wit a boost leak or anything? well exhaust leak or whatever like where the downpipe and turbo connects?
 

evan2

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hesitation no, most likely a vac leak would be noticed in idle and a few other things
exhaust leak will just sound like ass

if your car is studdering, then you have other issues
most likely fuel to much or too little
spark to little
detonation

maybe lower the boost down and see how it goes
 

mustangkilla

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i was thinkin it could be my plugs then and i lowered the boost but it still does it
 

evan2

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how do the plugs look?
could be many things in the ing system
whens laste time you change rotor or cap
 

mustangkilla

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neva changed them and i don't have a wrench to take out my plugs and look at them but where can i find them ngk 6097s?
 

evan2

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around my town advanced auto parts and car quest are the only places that carry ngk
and most of the time they can order or have 4 there

just call around to see who carries them, if all auto zones are the same they dont carry them
 

mustangkilla

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what kind of plugs r those? and i turned my boost down and it was still doin it but tonight on my way home for some reason it wasn't actin up, why i dunno, but i did notice my vaccum is a lil lower than usual, does that have anything to do wit it? i appreciate ur help
 

spidermancivic

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Destroy

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no your stock injectors are fine. Are you over heating...? any unusual smells...? are you throwing any codes...? Also first check your gaskets on your turbo manifold
 

mustangkilla

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turbo95eg6 said:
no your stock injectors are fine. Are you over heating...? any unusual smells...? are you throwing any codes...? Also first check your gaskets on your turbo manifold
see i think it might be the one connected with the downpipe, b/c one of the screws was black and it looked liked somethin had been leaking, how would i go about fixin this, just buy a new gasket?
 

mustangkilla

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turbo95eg6 said:
no your stock injectors are fine. Are you over heating...? any unusual smells...? are you throwing any codes...? Also first check your gaskets on your turbo manifold
yeah im not overheating or throwing any codes
 

Destroy

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greddy kit right...? well first start the car, so your manifold isnt that hot....open the throttle and put your hands around turbo manifold. While its reving you should feel air if there is a leak. Also its easy to notice a leak by the noise... That you can do your self, or have a shop perform a leak down test. I had to order a gasket for my old greddy kit once, they use the same manifold gasket as the nissan 350Z Turbos.,,you have the Tdo4 right...? You can get these gaskets at your local nissan parts dealer, probably special order though. If you had the kit for a while, its a good possibility its the gasket, but if not lets hope you find out what the problem is soon
 

EscortTurboLX

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most hesitation under boost is explained by a lack of fuel. if you are using electronic fuel managment, you definately need bigger injectors. does it ever make a sound like marbles in an aluminum can? if it does thats detonation. and you dont need to be buying a new motor.if you have an AFPR you should adjust the fuel pressure up higher.
 


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