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^^ True...OP, you said the "timing marks were dead on"...guessing you mean cam + crank timing...but did you check the position of the CPS when #1 piston is at TDC? This write-up might be helpful: http://www.supramania.com/forums/showthread.php?38775-How-To-basic-timing-instructions-CPS-alignment

Not at all, CPS is part of the ignition system, can't get spark if it's not operational... http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?Section=IG&P=4

Cap it, and don't forget to cap off the line coming from the intake manifold too.

I also think it sounds exactly like a TPS problem. If the ECU thinks the throttle is closed, but still sees increasing RPM and airflow, then it will stop injecting fuel at a certain point...TSRM says ~1800 rpm for a GE, so 2k seems about right...

Oh, gotcha ;) Based on that new info, I would guess that as well...definitely test it before you buy a new starter, anyway...

I agree that this could cause his problem. It is possible, though, that the pinion gear on the starter isn't moving far enough forward to engage with the flywheel...I believe that's the reasoning behind IJ's suggestion. Which brings up this: I used to think the exact same thing...but I was...

You had a thread just a few weeks ago about how you were hitting fuel cut (which will throw a code 34, btw). Based on your last post in that thread: I'm guessing whatever the real reason was for you hitting fuel cut, has still not been addressed.

Yeah, sounds like the clutch (in the starter) is shot...

What sensor are you talking about? If you mean the "turbo pressure sensor" that you mentioned in your first post, it's only for the gauge. This sensor has nothing to do with you hitting fuel cut...

Do you have a multimeter? The starting circuit needs to be examined (http://www.cygnusx1.net/supra/Library/TEWD/MK3/manual.aspx?S=Main&P=038). I'd recommend fixing your starting problem before worrying about the ignition problem. As I understand it, there are some elements that are common...

In that thread, there is a list of 3 numbered items, which is what IJ's statement is referring to. #2 and #3 are the stock head and block heights, and #1 is the stock headgasket thickness. So however much the head and block (2 and 3) are short by, you add that amount to the stock headgasket...

In for codes as well...this sounds a lot like AFM fail safe. IIRC a large intake leak would also cause this.

Details on the head gasket job? Did you go with a stock HG or metal, and did you have the head and/or block machined? Like the guy above, I'm also wondering if you drained the tank and re-filled with new gas....but I would say if you haven't done that yet, do it now before driving it any...

^^You've got a point there. If it's just an issue with the hydraulic system, I can't understand how it would only happen when you "drive hard on it"... I would take hvyman's advice though - when you have a clutch problem (and continue to drive the car), there's a lot more potential for causing...

Yeah, pics would help. Red clip does sound like an injector clip. And the TPS is on the side of the throttle body closest to the front of the engine, not that having it unplugged would cause your problem...

Look at the front of the engine where the head meets the block. This http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?S=EM&P=55 might help since it shows where the FIPG should have been applied.

Well the code 34 means that you have hit fuel cut at some point (but how long has it been since you cleared your codes)? Is it possible the previous owner put in a Lexus AFM that you were unaware of?

Yeah, there could be a boost leak, but at 10psi you're already borderline fuel cut range on a stock car...wouldn't be surprised if slightly colder air this morning was what pushed it over the edge. I'm skeptical as well on the blown pump explanation but if you really want to check that then...

You're welcome, good to hear you got it fixed!

Thanks for the explanation, that makes perfect sense. I must have been really tired when I posted ....of course the exhaust gases are coming from the manifold and there will not be any less of them to spool the turbo with a (post-turbo) exhaust leak. And I see now that it's not a case of...