2G Wont rev past 4k

[Chaosweaver]

This is for my 2G Talon with a 6 bolt swap. First let me say, there's no boost leak, tested for that. I checked all the vacuum lines, my gauge even says I'm at 20 vacuum, the compression on all cylinders is 150+. Now, here's my problem, it wont rev past 4k or so. When I do try to it sounds like the engine is giving it all its got, I tried accelerating with me foot all the way down, it goes to 4k and still its moving maybe 15mph on first gear, 2nd gear goes to about 25, ect. All this while the turbo spools to 10 psi and holds it like its nothing.

I haven't been taking it out for a while, its been sitting there for quite some time (I've been warming it up, ect. The gas it still has in the tank, which is almost empty now, has been in there for at least 10 months.) while I try to fix it but nothing seems to be working. When I take 1 step forward it knocks me back a block and its just starting to get really irritating. My wife is doing everything in her power so I don't get rid of the car but it seems like the shit keeps piling up and I'm just starting to lose hope in it.

I have a lot of money tied up into it, in the past 2 months alone I've put at least $800 into this car and it seems to be going no where. I have a daughter now and just cant keep dumping money into a car that seems to refuse being fixed.

Could it be the really old gas? Or something else? I'm really at the end of my rope when it comes to it.



Edit: Also I'm burning blue/white-ish smoke when I accelerate.

 

[VETTE_50_TH]

Plugs and wires, plugs and wires, plugs and wires.

 

[Chaosweaver]

Anyone else have an idea on what it could be? I will be checking everything that people list tomorrow or the day after.

 

[herms99gst]

Have you made sure all of your vaccum hoses are connected? Is the tps clean and not covered with grime or dirt? Is the timing set correctly? Also if the exhaust is obstructed it could cause this problem

 

[97dsmtsi]

Anyone else have an idea on what it could be? I will be checking everything that people list tomorrow or the day after.

something like that happen to me -the smoke check the mass air flow.
mine came unpluged

 

[Chaosweaver]

Vacuum hoses are connected, the MAF is connected, the timing is set correctly but will double check just to make sure.


I will be checking the TPS, I have a set of new spark plugs laying around that I will install as well. Hopefully this problem is resolved soon.

 

[PieEyedPiper]

Maybe really bad phantom knock that's putting your timing into the red, spooling the turbo early and limiting rpms? I've personally experienced that on a number of occasions now.

 

[Chaosweaver]

Maybe really bad phantom knock that's putting your timing into the red, spooling the turbo early and limiting rpms? I've personally experienced that on a number of occasions now.

How did you fix it?

 

[Gasolinebaptism]

Knock is what popped into mind first. You need to get it on a logger. If you don't have one, find someone in the area and ask to use it.
I don't know what your mods are, but if you have upgraded intake, turbo system, exhaust and havn't touched your fuel system than you can be sure that you're burning extremely lean.
But yea, do find a logger, you could have a dying fuel pump or something.

 

[scrapy34]

If you still have it check the catalytic converter if that plugs up the engine wont be able to get the exhaust fumes out there making the engine work harder and not gain any speed i had it happen to a few cars of my own

 

[PieEyedPiper]

How did you fix it?

For me, the phantom knock was caused by the lifters so my cure is oil type vs. engine temp. vs. driving vs. magnitude of lifter noise.

 

[Chaosweaver]

I have a Sony Clie PEG T615C which is compatible to log with, only thing I need to the damn cables and software. I was going to buy them online but it says that the OBD2 cables are no longer in production. I'm hoping to find a set along with the software so I can finally see everything I need to tune. I haven't been able to wrench today, which is extremely disappointing but I'm hoping to be able to tomorrow.

Anyone know where I can get the cables and download the software?

For me, the phantom knock was caused by the lifters so my cure is oil type vs. engine temp. vs. driving vs. magnitude of lifter noise.

Yeah, I havent changed my oil since its been sitting, that maybe my problem. I have the oil in my trunk, just need to go out and get my filter.

 

[Gasolinebaptism]

When I got my car it had been sitting with the same oil for 7 years, and it wasn't an issue once I got it running. I mean, it's not like I drove more than a couple miles with it, but the oil really wouldn't go bad and cause this, as long as it is the right weight.

And if your plugs are fairly white, then you must be running lean. But if they're new plugs then you wouldn't really know..

 

[eburg2490skillz]

hey i have a similar problem. i just installed my 16g big on 15psi. fmic and intake. external wastegate and o2 housing. the first day everything was fine excpet for the oil return line leaking a little. today i went to drive it, but at 3500rpm it would act as a rev limiter. i tried 2nd gear, but the same thing. also happens in nuetral. i am hitting no boost with no vaccume leaks. spark plugs and wires are fine. maf is fine. however, i am hearing a strange click sound under the headunit. i am not sure if my ecu or mfi could be the problem. any help?

 

[BLK97AWD]

I second the catalytic converter being the issue. When those things collapse it really limits engine power. Otherwise check your exhaust for any obstructions/collapsed internals.

 

[VRP]

Check for this....

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Collapsed flex pipe, will allow car to run but not boost past a certain level or RPM...

 

[eburg2490skillz]

A collapsed catylitic converter will cause the car to bog under higher rpm or the more the throttle is opened. however, if you are under light throttle, you should be able to drive normally. the problem i am having is fuel cut. i upgraded my fuel pump and injectors (with the tune) and my car wont cut out at a certian rpm. if your car is acting as a rev limiter or "2-stepping" IN NUETRAL AND ANY GEAR it is more than likely fuel cutting out or maf going bad or need a tune. Dose your check engine light come on then off after a few seconds when this problem occurs? if you scan that code, i didnt find anything