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| Forum name | 4G63 Tech |
| Topic subject | Hesitation under moderate to hard boost |
| Topic URL | http://forums.2gnt.com/dcboard.php?az=show_topic&forum=67&topic_id=6977 |
6977, Hesitation under moderate to hard boost
Posted by JRVENGE, Dec-31-69 06:00 PM
Hello, I have a 97 talon tsi. Car runs great except when boosting moderately or hard, especially on hard. It feels like it is cuttting out or loosing fuel or spark. I have not done a tune up yet, but i will do asap. Any thoughts would be great. I am new to DSM, but not to turbo vehicles. Thanks.
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6978, RE: Hesitation under moderate to hard boost
Posted by DR1665, Dec-31-69 06:00 PM
Welcome to 2GNT, man. We're a mostly non-turbo car site, but we do have a forum for the turbo engine. There's some really good people lurking in there, so I'll move this over there where they will see it.
On a 2GNT, I'd suspect plugs or wires right off the bat, but it could be something else. I don't know too much about the 4G63... yet. ;)
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6979, RE: Hesitation under moderate to hard boost
Posted by thedawg, Dec-31-69 06:00 PM
Gas
Plugs
Wires
Fuel pump/filter
o2 sensor
Cam angle sensor
Crank angle sensor
Knock sensor
Compression test
Mass Air Flow sensor
ECU/capacitors
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6980, RE: Hesitation under moderate to hard boost
Posted by FlyinEsi, Dec-31-69 06:00 PM
4g63's are notoriously bad for arching through spark plug wires to the head...replace your spark plug wires and plugs and see what happens from there.
Is the car stock or modified?
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6981, RE: Hesitation under moderate to hard boost
Posted by eclipzGST, Dec-31-69 06:00 PM
Do a boost leak test before you even bother checking anything else. 9 times out of 10, a leak is what causes problems under boost...
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6982, RE: Hesitation under moderate to hard boost
Posted by EclipseTical, Dec-31-69 06:00 PM
Originally posted by JRVENGE
Hello, I have a 97 talon tsi. Car runs great except when boosting moderately or hard, especially on hard. It feels like it is cuttting out or loosing fuel or spark. I have not done a tune up yet, but i will do asap. Any thoughts would be great. I am new to DSM, but not to turbo vehicles. Thanks.
start with that
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6983, RE: Hesitation under moderate to hard boost
Posted by FlyinEsi, Dec-31-69 06:00 PM
I agree with EclipseGST, try a leak test because that won't cost you anything and can find some problems. If that doesn't work try the spark plugs and wires first...if that still doesn't do it, then proceed with your tune up.
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6984, RE: Hesitation under moderate to hard boost
Posted by 420a-Tnthewerks, Dec-31-69 06:00 PM
I'm going to put my money on the plugs.
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6985, RE: Hesitation under moderate to hard boost
Posted by eclipzGST, Dec-31-69 06:00 PM
Originally posted by 420a-Tnthewerks
I'm going to put my money on the plugs.
I'll send you my paypal addy after he does a boost leak test. ;)
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6986, RE: Hesitation under moderate to hard boost
Posted by burntheblobs, Dec-31-69 06:00 PM
Sell it while you can!
Just kidding. Try a boost leak test! If that doesn't fix it try ignition (Plugs, wires, coil). If that still doesn't work try fuel.
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6987, RE: Hesitation under moderate to hard boost
Posted by 420a-Tnthewerks, Dec-31-69 06:00 PM
Originally posted by eclipzGSTOriginally posted by 420a-Tnthewerks I'm going to put my money on the plugs. I'll send you my paypal addy after he does a boost leak test. ;)
Ok.
Have you changed the plugs yet?
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