DSM Disaster Day

[TURB0]

Problem #1 I was driving two nights ago, cruising at about 70mph, when out of no where, my car just dies. It didn't sputter, buck, flicker or anything, it just died, however my electronics stayed on. I pull over and pop the hood. I do the routine check of all piping, vac lines, connections, etc. Everything looks OK so I try to start it. The car turns over but wont start. So I turn on the cars power and what don't I hear? The usual buzzing of my 255flh fuel pump. So I go to my trunk, take out my spare and all the junk in there, open the side panel, and start investigating. I then found that the wire directly connected to my fuel pump was held together with a butt splice and some electrical tape. The wire had become dislodged due to the sub-par assembly. So using the only tools I currently had with me (tweezers and electrical tape), I stripped it and tried to re-crimp it. I then loaded it with tape. I then went to start the car, and it fired right up. So I guess this is just to help others who may incur these same circumstances.


Problem #2 The next morning my car starts fine, I let it warm up as usual, and start my drive home. However to my dismay, my turbo is nearly inaudible. I could barely hear the spool until it reached near 15psi. I run a turbo XS standard MBC that is usually fairly noisy but now the car makes almost nothing. I am thinking maybe a boost leak somewhere?(I'm going to test it later today when I get time) Any input on this problem would be much appreciated.


Problem #3 My car currently has very few mods done to it. All of which are lised in my profile. The only fuel mods done are the 255flhpump and AFPR. However, when under load, black smoke is visible coming out of my exhaust. At night, I can see it bilowing if a car is behind me with their headlights on. The AFPR reads about 30psi at idle, but I was not the one who installed the system. Is this problem common with an aftermarket pump and regulator? Anything to fix it? Thanks.

 

[TURB0]

OK, the car was just boost leak tested and it looks like all of the free air is coming from in where the Intercooler piping meets the turbo. I'm thinking probably just a bad seal? Anyone know where I can get a gasket that will fit my 14b turbo with stock piping?

 

[weith1111]

Make your own. It's nothing special, not like an exhaust gasket. By a sheet from Autozone and trace & cut.

 

[DevilSperm]

There is no gasket there, just tighten the hose clamp and it will seal. Unless you are talking out the outlet neck meeting the turbo, in that case just throw some form-a-gasket on there and be on your way. As far as your black smoke, it sounds like you are running too much fuel pressure or you have a vaccum leak somewhere. You want your fuel pressure to be at 37psi with the vaccum line off. Then it should drop into the 20's with the line on and good vaccum.

 

[TURB0]

Is there not supposed to be a gasket? Because there was one in there now that I just took of the IC piping from the turbo. (it was also torn) But are you sure it will be OK if I just bolt it straight together with no gasket in between?

 

[weith1111]

There is no gasket there, just tighten the hose clamp and it will seal. Unless you are talking out the outlet neck meeting the turbo, in that case just throw some form-a-gasket on there and be on your way. As far as your black smoke, it sounds like you are running too much fuel pressure or you have a vaccum leak somewhere. You want your fuel pressure to be at 37psi with the vaccum line off. Then it should drop into the 20's with the line on and good vaccum.

I believe he is referring to the compressor outlet to the IC...so yeah, make your own, actually, thinking about it, I don't even know if you could get one from anyone but the dealer. All the vendors that include one with an IC pipe or something make their own, you can tell.

Agree for the FP. Needs to be adjusted. Set it to 37 with the line off. That will make for a much happier motor, and much happier motorists following you on the road!

 

[majik2k5]

There is indeed a gasket between the compressor housing elbow and the compressor outlet of the turbo. No need to go buy a brand new gasket though. I just picked up Silicon gasket maker from Advanced Auto and mine held fine at almost 18psi.

Also, I believe the correct fuel pressure for our cars is 43psi, correct me if I'm wrong though.

 

[DevilSperm]

43.5 is the fuel pressure for a 2g, 1g's are 37

 

[weith1111]

There is indeed a gasket between the compressor housing elbow and the compressor outlet of the turbo. No need to go buy a brand new gasket though. I just picked up Silicon gasket maker from Advanced Auto and mine held fine at almost 18psi.

Or do that!

Also, I believe the correct fuel pressure for our cars is 43psi, correct me if I'm wrong though.

Yep, you are mistaken!
Straight from VFAQ.com:
Fuel pressure --line off 36-38 psi

2g's are 43psi.


edit: doh, devilsperm beat me to it!

 

[TURB0]

OK, so I just disconnect the fuel lines, then set it up to 37psi?


Also, I replaced the gasket, bolted everything back up. However, my car still sounds different, and does not pull as hard. It used to make almost a buzzing sound due to my standard MBC, but now makes a more whooshing sound like the ball spring MBC's sound like. Any input?

 

[majik2k5]

Well, if you think it sounds like a change in MBC do the obvious, and check your MBC. Mine's just a cheap-o MBC, and I take it you're running an underhood MBC and not an EVC, correct? I forgot to check your vehicle profile before posting this

 

[DevilSperm]

OK, so I just disconnect the fuel lines, then set it up to 37psi?


Also, I replaced the gasket, bolted everything back up. However, my car still sounds different, and does not pull as hard. It used to make almost a buzzing sound due to my standard MBC, but now makes a more whooshing sound like the ball spring MBC's sound like. Any input?

No, you disconnect the vaccum line thats on the fpr and then set it to 37. Do this with the car warm and running. Then remember to connect the vaccum line again after you set the pressure

 

[TURB0]

OK update. I set the FPR to 37psi with the vaccuum line off, then with it on it falls to about 30psi, is that ok? Also, I picked up the gasket, but it still doesnt seem to seal the leak. It looks like the turbo was ported prior to me owning it because the gasket hole is slightly smaller than the hole on compressor outlet. Will silicon gasket maker work even though it gets so hot there?

 

[weith1111]

Also, I picked up the gasket, but it still doesnt seem to seal the leak. It looks like the turbo was ported prior to me owning it because the gasket hole is slightly smaller than the hole on compressor outlet. Will silicon gasket maker work even though it gets so hot there?

Make your own. Or cut the hole larger. You don't want the gasket blocking the airflow. Throw some gasket maker on there too if need be. There is stuff made for high temps, the black RTV I think. (RTV is all I use for sealing stuff)

 

[TURB0]

OK, im going to pick up some of that black RTV today.

Another quick question, the turbo on my car is very old, yet when I pulled off the intake and tried to test for shaftplay, there was virtually none. Do you have to take the turbo completely off the check for it or something?

I corrected all of the fuel settings, yet I am still blasting just as much black smoke, if not more. It is set at 37-38psi with the vaccuum line off and it drops to 29-30psi with it on.

 

[weith1111]

Another quick question, the turbo on my car is very old, yet when I pulled off the intake and tried to test for shaftplay, there was virtually none. Do you have to take the turbo completely off the check for it or something?

I corrected all of the fuel settings, yet I am still blasting just as much black smoke, if not more. It is set at 37-38psi with the vaccuum line off and it drops to 29-30psi with it on.

No you don't have to pull the whole thing, unless you are worried about the exhaust wheel you should be fine just tugging at the intake wheel. Did you pull in/out on the shaft? That's where most of the trouble lies. And I wouldn't be upset if the turbo is fine!

You are still going to run rich leaking boost. See what happens when you get that compressor outlet sealed up.

 

[DevilSperm]

Definatly do a boost leak test after you get that sealed up, I would suspect more leaks than just that outlet going by how your vaccum doesnt pull the afpr down much.

 

[psychlow]

His vacuum should be ABOUT right...

Assuming a 1:1 regulator:

1PSI = 2.036 inHg

8 * 2.036 = 16.28 inHg

I'd still recommend the boost leak test though.

 

[TURB0]

As if enough doesnt go wrong... Now my car bucks when entering boost. It will still build boost and accelerate if I try but it sputters to the point where it sounds almost like a built subaru boxer engine. I'm thinking maybe plugs and wires??? It's weird though that only occurs EXACTLY when I enter boost. Any ideas?

 

[majik2k5]

Well, it sounds like a boost leak. That or the car is leaning out on you. Mine did that and it had now power at all and backfired 50,000 times before I found a kinked fuel line from my fuel filter causing it to lean out when I would hit boost.

But, if it is only doing it when you hit boost, it sounds more like a boost leak. Cut the whole in your outlet gasket bigger to match, then go get some gasket sealant and load that puppy up and seal it all up, then once it has had time to set up, go see what the results are.

If that doesn't fix it, perform another boost leak test.