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Old 02-15-2011   #1
Owned
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Wierd Misfires. 2g Tsi
Ok so i been having weird misfires ever since replacing my old T25. 157k, New plugs, 450cc injectors, stock SMIC+piping, 1g bov adapter+ bov, replaced front bank o2 sensor, old stock cat. converter... While im driving on the highway (without boost) ill have a misfire and a weird smell will fill the cockpit once an awhile, my car wont boost past 5psi sometimes without misfiring/fuel cutting but will sometimes hold at 8-9 on 3/4 throttle but never will allow me to WOT. EGR is blocked off and fuel pressure solinoid removed, but these things where still happening before I did the EGR mod. I haven't had a chance to boost leak again after a failed attempt with the cheap one I made before, but i couldn't imaging a boost leak limiting me to 5 PSI on such a simple setup?? This was never a problem until I replaced my turbo with a T28.

Things I plan on trying or possible issues/suggestions.

I would like to Boost leak test again,
Should I RTV the BOV gasket?
Should I RTV the EGR block off gasket?
Buy a new coil pack?
I have a FIC injector seal kit I have and need to install...
I have/waiting on FPR and install that...
Would the injectors be bad?

More or less I'm looking for more opinions so I'm not spending money on pointless things I dont need replaced..I've already dumped 2k on this car and its still stock, WOW.
Last edited by Owned; 02-15-2011 at 10:19 PM..
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Old 02-15-2011   #2
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Re: Wierd Misfires. 2g Tsi
Update: 3 random misfires/bogs in the drive through while car was fully warmed up. thinking coil pack right now.
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Old 02-15-2011   #3
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Re: Wierd Misfires. 2g Tsi
I have a coil pack for sale pulled from my car. Did you change wires? check gap? What brand of plugs?

I'd say wires if you haven't replaced them.
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Old 02-18-2011   #4
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Re: Wierd Misfires. 2g Tsi
Quote:
Originally Posted by CornFed2.4 View Post
I have a coil pack for sale pulled from my car. Did you change wires? check gap? What brand of plugs?

I'd say wires if you haven't replaced them.

#3 wire was bad. haven't replaced them, didn't know they where so old.
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Old 02-19-2011   #5
RS98GSX
 
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Re: Wierd Misfires. 2g Tsi
That used to happen to me...I was running super lean. what your AFR at? check all your injectors the normal stuff.
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Old 02-19-2011   #6
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Re: Wierd Misfires. 2g Tsi
running ebay narrow band that came on the car lol. pulled the injectors and re did the o-rings. everything is running great.
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