GST sputter and stall

[Hardcore1]

The other day my gst stalled out and has been sputtering since it kind of shocked me because it has never done that I thought I may have a boost leak but no so I changed out the fuel pump and put in a holy performance fuel pump with filter. Still no correction, the only other thing I can think of is to replace the isc motor, does anyone else have an idea? I hope I dint have to replace a ring.

 

[1davho]

I would start by checking the timing. Make sure your timing belt didn't jump a tooth.

You could have a bad connection on your transistor or coil pack or either one could be bad too. I would check for spark.

 

[Hardcore1]

That will suck if it is the timing, but I will check I also replaced all wires and plugs coil pack is new new so don't think it would be that. But the timing seems more relistic especially ### I have the AEM true time cam gears. THX Bro

 

[1davho]

Check the transistor too. I have had the plug on those wiggle loose and it starts missing like crazy. It drops two cylinders.

 

[Hardcore1]

Thanks bro I never even thought about that one.

 

[inspire]

Have you verified with a boost leak test? I had a similar problem and thought I was 110% I had no boost leaks and sure enough after digging in a little deeper I was surprised to find 4 different leaks all causing one massive leak. Took me several weeks to finally listen to what someone told me. I am hard headed haha. Another thing do you have a datalogger? Check to see if everything is running to specs. Open circulated blow off valve, or broken valve can cause this to. The cheapo ebay ones break all the time. Not sure what setup your running.

 

[Hardcore1]

Blown exhaust manifold gasket after checked and rechecked again and again. Thanks for all the tips

 

[turbogentwo]

I would recommend the MAF plug maybe it's loose or has corroded plugs

 

[Hardcore1]

That's a good idea.