2.3T cutting out.

[92dangerranger]

Hey guys. My truck has been running great ever since i completed the swap and is my daily driver. But in the last month or so it has been cutting out if i jump on it really hard. It does it off and on but not all of the time. If i boost it up in second gear and hold it at about half throttle around 10 psi its fine. But if i go ahead and hammer on it it wants to hesitate and it flutters out the Exhaust. That's the best way i can explain it...It Flutters! The boost has always creep up to around 12-14psi but when it is acting up it does it at around 10psi and wont let it climb. Any help will be appreciated.

 

[Davis]

Check your plugs. The gap might be too big.

Also, it may be running lean at high boost.

 

[92dangerranger]

I changed them when the problem started to happen and gaped them at 34 and it did not change anything. I don't think it's leaning out i don't hear any detonation. I'm not real sure what is going on.

 

[RangerFabWorks]

sounds like you have a boost leak. whats the duty cycle of the wastegate doing? im not sure if you loggin or not.

 

[92dangerranger]

No lag. It comes up to boost fine. Pretty sure its not leaking.

 

[RangerFabWorks]

No lag. It comes up to boost fine. Pretty sure its not leaking.

it sounds like a boost leak to me.

heres a good right up on how to make a boost leak tester

http://www.300zxclub.com/showthread.php?t=42718