[killereclipse86]

Ok so here is the deal, I have a 92 Talon TSI FWD. For some time now, the car has been miss firing up top. Here is what i did so far to the car. I put a boost gauge in so i know what psi the car is running. Currently it styas put at 10psi. I put new copper plugs in, xtune ignition wires, and new coilpacks and a new transistor. After all of that the car is still missing. I know that i have some kind of a crankcase problem cause the dip stick used to come out under high RPM, and then i pinched the tube for it, now the oil is comming out from the top of the oil cap. I want to the get the Dejon krank vent kit, but i dont know how good that works. I am not even sure if the crank pressure has anything to do with the car misfiring uptop. So i guess my two questions are:

1) why is the car misfiring?
2) would the Dejon Krank vent kit help deal with an overpressurized Krank case.

 

[SoonToBeDSM06]

Have you tried a new PCV valve? Only get OEM if you do because the auto parts store ones don't hold any boost.

 

[1990 Dsm Gsx]

Just HOG OUT THE INTERNALS OF THE PCV and re-route it to a catch can. Same with the breater on the VC.

Miss up top? Are your plugs gapped properly?



-Andrew

 

[killereclipse86]

Just HOG OUT THE INTERNALS OF THE PCV and re-route it to a catch can. Same with the breater on the VC.

Miss up top? Are your plugs gapped properly?



-Andrew

i think maybe that is the problem. I think i might go get the bosch pre gapped plugs

 

[turbolover]

Have you tried a new PCV valve? Only get OEM if you do because the auto parts store ones don't hold any boost.

Is this really true?

 

[ICGerms]

i think maybe that is the problem. I think i might go get the bosch pre gapped plugs

No. Use NGKs and gap them yourself.

 

[killereclipse86]

No. Use NGKs and gap them yourself.

can i get the NGK plugs locally, or do i have to order them off the interent?

 

[gota0have0boost]

Autozone carries NGKs. Gap them to.028

 

[gota0have0boost]

By the way, have you checked for boost leaks? You could be breaking up due to a rich condition. Any black smoke?

 

[ICGerms]

Autozone carries NGKs. Gap them to.028

He shouldn't need .028...he's only running 10psi. Gap 'em to stock specs (.032, I think). But gota0have0boost is right...you should be able to get them from Autozone or Advance Auto or O'reilley or Napa. Heck, I've even seen them in the automotive department at the local farm/tractor supply type store :dunno: And definitely check for boost leaks.

 

[killereclipse86]

ok i still need to get the spark plugs, but i still dont know why the car is misfiring. One of my friends was saying that it might be the sensor that is on the cam shaft. He is saying that the car may have jumped timing . Another one of my firneds is saying that the mass air sensor might be bad.

Do any of you guys have opinions of the MAF being faulty, or the car jumping timing, or the ECU might be bad all together?


I dont know if this helps, but the car also dies when i turn it on initially, then i have to start it one or two more times for it to stay on, but once it is on and at normal running temps, then the car is fine and does not die. I dont know if that helps but i thought that i would throw it in just in case.

 

[1990 Dsm Gsx]

Compression Check, Boost leaks, Are you getting fuel, The list can go on. Now it's just a matter of process of elimination. Go from the easiest stuff to the hardest.



-Andrew

 

[chuckg]

I had a problem similar to this, and it ended up being bad spark plugs and wires. Id go to Autozone or whatever parts store you prefer, get a set of NGK BPR7ES gapped to .028, and if you can afford it order a set of these http://www.extremepsi.com/store/customer/home.php?cat=405

 

[1990 Dsm Gsx]

I like Magnacore better.



-Andrew

 

[JayRolla]

He shouldn't need .028...he's only running 10psi. Gap 'em to stock specs (.032, I think). But gota0have0boost is right...you should be able to get them from Autozone or Advance Auto or O'reilley or Napa. Heck, I've even seen them in the automotive department at the local farm/tractor supply type store :dunno: And definitely check for boost leaks.

Gap them to .028, no madder how much boost you are running. You can even go down to .020 just to see if it stops the misfire just for diagnostic. If it does stop then you have a weak spark.

Boost leak can cause misfires. Im having the same problem right now.

 

[killereclipse86]

ok well i guess ill use this thread for all the problems that i have with the car. I did the regap and made the gap.028 and nothing changed. My next step to solving this problem is going to be a fuel pump rewire, walboro 255, and another set of injectors. Ill let you guys know how it goes.

 

[Gamble]

what transistor did you change? I was having a very similar problem and now it does it on a very rare occasion. I tried a different coil pack, plugs and got some new wires. Then I adjusted my base fuel pressure to teh stock and it seems to be good now.

 

[RippinGSX]

Don't just start changing stuff out to track this problem. It has nothing to do with fuel so why are you thinking injectors?? Magnecore's suck ass by the way. Expensive wires easily prone to failure.

 

[killereclipse86]

Don't just start changing stuff out to track this problem. It has nothing to do with fuel so why are you thinking injectors?? Magnecore's suck ass by the way. Expensive wires easily prone to failure.

so what do you suggest i do in order to tackle this problem.

 

[Gamble]

Start with some NGK spark plugs. 7's