Got myself a gsx, and many problems. need wisemen for guidance

[redderick]

First of all, I would like to say badass website. There is a large list of issues that have been fixed here and that is awesome. However I havn't exactly found the answers I am looking for, but I am learning a ton.

It might be my connection, however I am not able to download the full service manual from the link provided from this site. it gets to the fuel injectors and then it sais its loading the rest of the pages. but they never load, very strange.

Ok, onto the car. I bought this car thinking I was getting alot of information from the guy and he seemed like he knew what he was talking about, however when I recieved the car, all of the sudden he doesn't know much abou tit, so I stopped talking to him. However what I do know abou tit is in my profile information if you would like to look.

I got the car running and hooked up the LC-1 to the car, and then got it to idle just fine, and then connected the dsmlink up and ran it. To my knowledge I have everything set up correctly...to atleast start the tuning. however at idle I am running 16.6 af/r roughly...which is rediculous, so I tried to raise the fuel to get something out of maybe rich it out a bit. It did nothing! even at a 30% raise. wow...so I eraised the fuel pressure to 43, and still nothing... 16-17.5...crimeny. So, then I turned off the car and was searching around the engine bay for fuel being sprayed on something...and there is no leak I could find but it smelled like gas hardcore!

My steps right now are:
Check for seating on the injectors
Look at all the connections from rail to injectors...

if this doesn't work, I don't know what else. I am saying what I think I should do, but I am not sure, if there is smaller steps I should take, please point them out so I don't do anything stupid heh.

Now, all of that said, there are a few more things that I just wanted to point out to see if you have ran into this. While attempting to run the car to my house from where it was dropped of I noticed there is a significan knock present over 2400 rpm. I attributed this to no tuning done on the car yet, but it just stutters after that like there is no fuel to the car... I havn't researched a ton on compresser surge and I don't know what it is completely, however I heard someone say that this could be the reason? which is linked to the a/f problem I am having?

I think this is it for now, but if you all could ask me some questions I might be able to give you more information, however I am learning at a significant rate trying to get this thing to just run before I start changing large components out.


Thank you for your time,
Redderick

 

[95blackGsTurbo]

Whenever getting a new DSM you first step should always be this.IC Pipe Tester Get back to us with the results from that. If you are smelling the gas it is either leaking or not being burned completely. But I have faith in the boost leak test to reveal some problems first. Also what version of DSMLink?

 

[Colt4G63 also]

You have link, turn on the pump and see if it leaks with the engine off! Make sure the injectors aren't leaking into the engine, and that the fuel isn't passing through the FPR and going through the vacuum hose. Check your O2 sensor. Does it read lean too? If this problem (lean) is only at idle and criuse, adjust your MAF sliders, not your fuel sliders. The fuel sliders are mostly for WOT operation.

 

[redderick]

I will get that IC tester this friday. I was looking for more diagnotsic tools to work with.

The DSMLINK is V3


@colt: How do I turn on the pump with the engine off? If the injectors are leaking into the engine how would I know? The vaccuum line is clean I took it off to adjust the Fuel pressure in some earlier steps and it was clean.

I do not have a air fuel ratio gauge, how do I check the O2 sensor to see if it is lean?

The fuel sliders have a couple at 2k, 3k, ect rpms. only reason why I worked with it. I will attmept the MAF sliders today after work.

 

[95blackGsTurbo]

If the injectors were leaking or the regulator was faulty you would be running rich. If you are running really lean your o2 is going to be stuck close to 1.0V. It should be fluctuating normally. That IC tester is going to be a HUGE diagnostic tool. A leak can cause havoc on many parts unrelated if you are getting unmetered air or leaking before it reaches the combustion chamber. You really should have a wideband for any kind of tuning as it is the only true way to monitor your A/F ratio. Adjusting anything in DSMLink now is worthless until you get the mechanic things fixed, boost leaks, wrong spark plugs, faulty o2, things of that nature.

 

[EclipticalGS]

plugged fuel filter, fuel leak, injector seals, fpr, fuel pump. Those could be some problem makers. 16.5-17 a/r at idle almsot scares me to hear that. I wouldnt be trying to rev it until you get your base idle/ ar's correct, no wonder your getting knock at 2.5k rpms thats crazy

 

[redderick]

Roger that. I am going to change this thread to solved for now. and build that IC pipe tester. After I finish that and the problem persists, I will start a new thread. Thank you for all of the help and I will be on here soon. Lots of room for improvements and mess ups