B16 Turbo Sol, been running fine for months now. Lately noticed the battery is become worse and worse not holding charge (This is just a 1 year old) battery. That most times having to jump start the car or bump by rolling it and then putting it into gear.

So yesterday same thing, started fine and drove to my local filling station. Car was boosting just fine. When after filling, it won't start and had to push the car with someone from the road and car started but then on way back car won;t boost at all it was just N/A on all gears. I took wastegate to check and this is fine, tested PWM and its working, so I disconnected battery over night and tried started car again today but now car won''t rev, bogs out and can just drive on 1 gear with no more than 2K rev and sound like mis fiing sometimes.

My next suspect to check is the MAP sensor.

Any ideas guys.

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Fixed:

We cleaned the spark plugs, adjusted the timing, flushed the fuel and put in new fuel from a different station and it fired up right away. So the main two problems I had were:

1. Contaminated fuel

2. Slipped timing

 

Get your charging system working first. make sure good battery and alternator first. low system voltage will cause many crazy things.

 

So here's what I've done so far but still no fix.

1. I replaced the spark plugs with new ones.
2 Fully charged the battery over night
3. Tested TPS (correct voltages on multi meter) and S300 goes from 0 to 100% when WOT any value between depending on how hard I floor the gas.
4. Replaced MAP sensor
5. Tested injectors

Still will not response well when I try to rev it and will sometimes just go to 2000 RPM close and other times will go all way to red line when in neutral. If I drive the car, it will not rev over 2000 RPM on any gear. Though while driving it down my road sometimes it feels like its about to kick back into life and can feel to start pulling hard and reving more (even the turbo starts to spool) then it bogs off and goes back down to 2000 PRM. Car also won't start unless I step on the gas pedal.

I've included some of my S300 logs if anyone can have a look at them and help?

Similar to my symptoms video

 

this

you stated your battery is defective/not charging you need to address this it can cause all types of issues.

have u pulled the cel code that you have?

 

Update: Got a new dizzy, installed that and car started but with the same symptoms. I decided to test the alternator but it's possible that during the process a wire heavy duty wire I had slipped between one of the cam gears and timing belt. I didn't see it happen, I just heard it as I leaned over the engine then car died and won't start anymore.

So today with my builder we've gone through everything possible including compression test but couldn't figure what's wrong so he checked the fuel and he filled few bottles from my fuel line and we could see something separating at the bottom in each one we filled. We also check the timing and this was off by 1-2 degrees (so timing must've slipped either when that cable gone between the cam gear and timing belt or when I bump started the car right after fueling).

We cleaned the spark plugs, adjusted the timing, flushed the fuel and put in new fuel from a different station and it fired up right away. So the main two problems I had were:

1. Contaminated fuel

2. Slipped timing