alright mate have you checked all your intercooler pipework sounds like you have popped one of them off
i havent had it on my skyline but happened all the time on my evos

also with the starting iisue have you checked the battery state my skyline was the same turns out the battery was on its way out changed battery all is fine now
the fuel smell will just be your in jectors are trying to put fuel in before the engines started creating an excess of fuel

i could be wrong as pritty new to the skylines

 

I had a quick look this morning when I got home and everything looked to still be attached but without checking any further I can't rule that out yet.

My battery guage is showing it's almost fully charged

 

I'm pretty sure the gauge only indictaors what voltage the alternator is supplying the battery with. Best way to check is to test the voltage on the terminals as your starting the engine. If it drops below 12 at any point then the battery may be giving up the goose soon.

As above the loss of power would point me in the direction of the intercooler pipework as Ive had it happen to me before cos i didn't tighten the jubilee clips up enough after fiddling about with the turbo. Just double check all the pipework but as a guide the one that popped off on mine was after the intercooler as it came back through the engine bay.

 

But wouldn't loose pipework cause a problem in every gear? in 1st and 2nd gear it revs all the way up as normal with no problems

 

Hmmmmm that's very strange? How old is the fuel pump?

 

6 months max

 

Could be a split hose, during non boost.high vacuum it could be sucking in unmeatered air and scewing with the mixture and cause misfire etc, and if on boost it could also loose pressure also scewing with the mixture and curbing performance.

 

Up on further investigation I discovered my air filter had fallen apart, the silver bullet shaped thing on the end has gone and my filter is now in 3 parts so I'm wondering if that could be it, I've tightened up every jubilee clip on every hose so this I think is my cheapest next option.

So now I need to find an air filter to go over fit in this space:


You can see the silver bullet bit on the end of the filter which has now gone missing.

 

I guess you could of had a bit of the filter caught on the AFM causing problems, but worse still you could have a piece of the filter stuck in the turbo turbine, might be a good idea to check before running the engine again mate.

 

The filter bits can't get passed the mesh in the AFM

 

That's good then...a lot of them are missing the mesh that why I asked.

 

I'm just hoping it's the filter causing the issue, but if it's falling off while driving I can see it being that

 

Still sounds most like an air leak to me, when its reluctant to start does it do it most when hot or cold?

 

Mostly when cold.....turns out it does do it in 1st and 2nd too i was just changing gear before the problem area....looks to be more close to 5k than 4 so if it's an air leak I'd say it's a small one brought on under heavy load.

The broken air filter could be causing this though yes?

 

Okay now it is stalling too, I've been told to check the ICC but I don't know where to find it, any advice?

 

Have you checked the AFM to make sure the resistor is clean and the plug contacts are good?

 

And pardon my ignorance but what is the ICC?

 

I meant IACV stupid auto correct

 

If it turns out its the iacv gone **** dude i have 1 that has just been removed from my gtt. U will have to chop the plug off yours and join it on this 1 though as ive used the plug to retro fit a r33 iacv to my car (long story) lol. Pm me for details if u need it.

 

And for ur info its on the back of the inlet plenum by the bulkhead, has a grey connector and some water lines going into it...

 

Ok thank you for the help locating it...how will I know if it's shot

 

Did you end up finding out what was the issue, I’m having the same issue replaced spark plugs, coils, and now even afm