91 talon tsi cuts out real bad at 3500 help!!!

[bigblock]

power is great up to 3500 the it starts stutering real bad it seems to change between 3500 and 4500, new plugs,wires, fuel filter, car is basicly stock except for a turbxs boost controler set for 13 psi, checked all vacumm hoses for leaks and car also has and irradik ideal ,it bounces between 650 and 1200 rpm please help this happened after i sold my other car for $ for a paint job so it is my only ride

 

[oldman]

power is great up to 3500 the it starts stutering real bad it seems to change between 3500 and 4500, new plugs,wires, fuel filter, car is basicly stock except for a turbxs boost controler set for 13 psi, checked all vacumm hoses for leaks and car also has and irradik ideal ,it bounces between 650 and 1200 rpm please help this happened after i sold my other car for $ for a paint job so it is my only ride

Boost leak test. BTW use the spell check.

 

[project_tsi]

yeah im voting boost leak. it can cause massive stuttering. does your boost creep also?

 

[bigblock]

will try boost leak tomorrow, any chance it is in ignition coils? the spark is red not blue,
the boost goes to 10 psi then to 13 psi about 3300rpm (used spell check this time)

 

[oldman]

will try boost leak tomorrow, any chance it is in ignition coils? the spark is red not blue,
the boost goes to 10 psi then to 13 psi about 3300rpm (used spell check this time)

I would think if it's ignition then it should get worse at higher rpm instead of recovering itself. Stick to the leak test for now and see what happens.

 

[bigblock]

alright i think i found the problem, i made a homeade boost leak detector and found probably 10 leaks, i fixed all but 1 which i can,t find it it sound like it is comeing from direcly below the ingnition coils i caped off the only 4 ports i could find (reaching under intake from passanger side) and still i hear air from under there i'm plulling the moter out tomorrow to try to improve on the motor mounts by useing window weld (read it on internet, sopposed to held with wheel hop) i'll see if i can find the leak with the moter out

 

[oldman]

alright i think i found the problem, i made a homeade boost leak detector and found probably 10 leaks, i fixed all but 1 which i can,t find it it sound like it is comeing from direcly below the ingnition coils i caped off the only 4 ports i could find (reaching under intake from passanger side) and still i hear air from under there i'm plulling the moter out tomorrow to try to improve on the motor mounts by useing window weld (read it on internet, sopposed to held with wheel hop) i'll see if i can find the leak with the moter out

Now you understand the importance of a boost leak test, it should be done regularly as new leaks can develop after you fix the old, now go spread the word. The leak you're talking about is most likely the intake manifold gasket, change it when you have the motor out. Last thing, make sure the system is able to hold at least 20psi for at least 30 sec as it slowly bleeds itself off.

 

[bigblock]

PROBLEM FIXED, replaced gasket, bought new motor mounts (the ones i was going to "fill" were really bad so I just bought new ones) still had leak, it ended up being the fuel injector seals it was leaking around the rubber seal(not o-rings)

 

[arson]

those 4 lines you capped off under the intake manifold go to each-other. one makes a zig, the other makes a zag. they are parallel and go nowhere on either side. just a fyi incase you were worried about them being important and being open.