Another won't start thread... Starts but doesn't idle.
 

I can't understand.

The only way to have the car rise in RPMs is to pump the gas pedal. If I keep the gas pedal to something like 5%, it will die. I really need to pump gas pedal.

Short story:

Premix a little bit too much yesterday. I thought I was empty so I've put 800 ml 2-cycle oil for 46 litres. So there was about 1.4L of 2-cycle oil in the full tank.

But the car was running well, I made a 250 kms trip with it. Today, cold weather -10 Celsius, the car won't start. Since my 250 kms trip burnt some fuel, I've just put 25 new litres of pure gas to dilute the 2-cycle oil and it still won't start. I really have no idea.

I've tried:

-Unplug battery
-Unflood engine, easy way: pull EGI fuse and let it crank for 20 seconds, 2 times.

i would start by checking the obvious....vacuum lines(especially the one going to the pressure sensor on the drivers side firewall), verify spark is fine on all four plugs and that plugs arent fouled, fuel pressure etc... if still no luck id verify the tps sensor is in spec and no codes are in the system.

also compression test would be a good idea

Compression checked, OK!
Spark on all four plugs checked, OK!

I explained my problem to a local mechanic friend and he told me it could be the fuel filter! What do you guys think?

I ordered it, I'll have it tomorrow.

Sounds fuel related. I'd pull the plugs crank it and see if any fuel is being pushed out. Or try starting it with some starter fluid.

Yes, there's fuel being pushed out!

If it's not the fuel filter, I'm pretty sure it's something related to the throttle body. Or something stuck in the fuel tank?

sounds like your injectors are dumping a load of fuel. I'll check on those injectors of yours or injector O-rings.

-AzEKnightz

"A load of fuel", you mean they are injecting way too much fuel???

Un-calculated fuel. Leakage that was not meant to be there. Hence you have a flooding issue causing you to "not start".

-Eric

Thanks, is there an easy way to check for leakage?

Jumper the fuel pump terminal to GND @ the diagnostic pin-out box while you have a fuel pressure gauge hooked up. Pressure should stay constant, if it is slowly bleeding off. You have a leak.

-Eric

Fuel filter changed, it wasn't the problem.

Do you know where to hook a fuel pressure gauge? Car is constantly flooding.

I thought of an easy way to know if an injector is stuck open. I'll take a battery and splice two wires (+ and -). I'll connect them to each injector connector and I should hear a "click". Am i right?

clicking means you're activating the injectors. That does not prove if it is stuck open/close.

I personally recommend tapping a fuel pressure gauge into the fuel supply line at driver side (tap a Tee) and jumper F/P and GND together, watch the fuel pressure move up and let it sit.

Keep an eye on the pressure, it should be steady ~35-38psi stock.

If it slowly dropping, you have a leak in the engine since you're flooding like crazy.

-Eric

Oh thanks, good idea! Gonna check this tonight or tomorrow.

Hard to tell... So I removed the primaries. I don't know if they are aftermarket, they are SUPPOSED to be but I really don't know...

BTW I found an old set of primaries in the back of my garage, why my old primaries doesn't have the "rubber ring"?

Primaries I just removed: RIGHT.
Primaries I found: LEFT.

https://fbcdn-sphotos-b-a.akamaihd.n...05640108_n.jpg

Different injectors maybe? They should have an upper and lower O-ring on each injector.

-Eric

I think those to the right are supposed to come from secondaries!

If you put secondary injectors into your primary rail, you will have a sh*t ton of uncalculated fuel being dumped into the engine.

-Eric

Well I think I need to ask my tuner... But I'm pretty sure he did put 4x850cc.

Could it be bad fuel?

bad fuel can cause hesitation, stumble, lack of power, misfire etc etc.

But it will not cause a "flooding" situation.

-Eric