Do I have a Boost Leak?

[Xero_Tolerance]

Yesterday my car was running better than it has in a while I would probably say. I was having exhaust leak problems and I replaced the manifold gaskets and it boosted much much better. But today my car is running like crap to say the least. It doesn't respond to the throttle very much and at WOT it hardly makes any boost. When I'm just cruising at like 10-15% throttle many times it'll randomly jerk really bad, like it feels like the engine turns off and the rpms drop for a second then I have to let off the gas and rev it up to get it back. Also, I popped the hood to look around and I was reving the engine, everything I reved it it would bog really bad at first then rev, instead of just reving. So does that sound like a boost leak or something else? I was thinking if it is a boost leak then it would be running really rich compared to how much air it's getting so that would cause it to mess up like it is. Anyway, if anyone knows what might be the problem please let me know what you think, thanks.

 

[BOOstGhost]

are you boosting at all? any CEL's?

 

[lowridin2g]

could be a bunch of things. its really hard to diagnose problems over the internet/phone. its alot easier to know the whole before/after scenario/symptoms and be there in person. but it very well could be a blown off intercooler pipe.

how are your ecu caps?

 

[flytalon93]

Why not do a boost leak test? If no leak detected, then you can check that off the list of possibilities.

Good luck,
Steve

Edit: Forgot to add, after you buttoned everything up from replacing the exh manni gasket, did you retorque the bolts after the first warmup?

 

[Xero_Tolerance]

I forgot to mention that I can boost when I push enough throttle, but the boost builds up a lot slower than normal. It gets up to like 10 psi maybe at full throttle towards the end of 2nd, around 5000 in third or so, and never bucks when it's under boost, which doesn't make much sense to me...

I'm going to check it all out today and hopefully figure out what the problem is. What could be some other causes for a car to buck at low throttle and no boost?