Boost misfiring/lagging/popping need help!!!

[VicBoost]

okay whenever i try too push the car it starts too pop around 2.5-3 rpms but once its over 3 rpm it accelerates fine it never did this in the summer. It feels like something is misfiring and something is lagging it, i'm guessing its the boost thats misfiring. The intercooler pipes are fine and so is the whole exahust system can you guys please tell me whats the problem is. Whenever i try too floor the car it makes a popping noise and sounds like its misfiring and the car doesn't move as fast at all.

 

[clipse0001]

check the wastegate actuator. Look for boost leaks

 

[awd16g_eagle]

try changing the spark plugs and check your wires for cracks. A good way to check if your wires are bad, set the idle to the rpm your having trouble with spray the wires with water you will be able to see if the spark is arking causing misfire. Make sure you spray the coil often thats where the problem is.

 

[JCMDSM]

^^ Bad idea unless you want to get a new coil. This could also be fuel related. Sounds like a bad fuel filter to me.

 

[talondude4]

try changing the spark plugs and check your wires for cracks. A good way to check if your wires are bad, set the idle to the rpm your having trouble with spray the wires with water you will be able to see if the spark is arking causing misfire. Make sure you spray the coil often thats where the problem is.

OK quick question for you man? You know what label is all over hair dryers, lights, and other electrical appliances? (do not come in contact with water).....


right?

So i think that would leave common sense to tell you that it's not a good idea to soak your cracked plug wires in water.(just too see a cool lightning show).

 

[awd16g_eagle]

yea drenching electronic parts is a bad idea but spraying water out of a spray bottle wont hurt anything. But if wires or a bad coil is the problem this will save a lot time and money. He does own a dsm so chances are he doesnt have a lot.

 

[VicBoost]

okay imma do some tests and find out what it is

 

[57TrimGST]

Not sure if it was stated(I don't read the other posts), But perform a boost leak test. You may have a slit in a coupler and is only opening up when under boost, Which will inturn cause the same problem you are having now.

 

[noob-e]

Try replacing your butt plugs.....um, I mean spark plugs.

I had a similar problem and I figured it was a boost leak. I did a boost test and found that my throttle body shaft seal was leaking. I got oldman to ship me some shaft seals, but I have not had time to install them yet. I replaced my Bosch plugs with the OEM NGK plugs the other day and my car runs like new! Night and day difference! No more bogging under boost

 

[VicBoost]

it was spark plugs!!! i had a feeling it was but it also fixed my rpm's too... But yea runnig good now thanks guys.