Running lean

[Wpgdsm]

I have a 90 Talon TSI AWD no mods. I'm running lean on 1 and 2 , 3 and 4 are nice. Engine runs smooth, sometimes hard to start. i've checked everything I can think of but cannot find whats causing this. Any help or insites would be welcome.

 

[importboost]

fuel pump whining? also when was your fuel filter changed? well basically what have you checked and how did you check it?

 

[overdoseheroin]

do you have any way of logging? and what are you going by? plugs i assume?

 

[Wpgdsm]

I'm going by the plugs. Yes the filter is new, I don't own a fuel pressure gauge or a data logger. i did have to fix some worn through wireing on the injectors. I'm starting to think it's a fuel delivery problem because of the hard starting. I'm going to see if I can get it in to my mechanic and put it on the scanner. I hope that will give me some idea of where to start looking.

 

[importboost]

is the fuel pump whinning? also you can check your injectors by taking them off and putting a 12v power source to the postive and see if they open.

 

[BOBS90TURBO]

Are you sure that no free mods have been done, if so maybee the screw on the bottom of the mass has been backed out a few turns. Turn it in a turn and it should ritchen it up a tad.

 

[Wpgdsm]

Yes some of the free mods have been done to this car. They were done before I bought it. Never knew there was a screw on the mass I will definitley have to look into this. Does anyone have a picture of what I would be looking for? If I was to reset this screw how many turns from bottomed out would be the factory setting? No the fuel pump is not whining , you cannot even hear it at all. I have a friend who is going to check the injectors for me.