14b is on, have some problems now

[Xeiros]

1st problem is that I've got no oil pressure. I don't get any at all till I'm on the gas. Once I'm on it, it builds up with whatever RPM I'm driving at, and slinks back down when I decelerate.

2nd problem is that when the turbo starts to build boost (around 0 on the gauge) the car starts to struggle very bad, and once it starts to build boost, it continues to do so. It will bog horribly and almost want to die.

Any idea's?

I'm not sure if my car's leaking any oil. It might be leaking ever so slightly from the oil return line, but I don't know yet. I've got cardboard under there to catch any drops and am going to go check it soon.

 

[Rob10_99]

Sounds to me like the turbo is going out,
seems gutless after it "should" build boost,
Try a leakdownboost leak test yet?

 

[rich3389]

Try a boost leak test first then let us know the results.

 

[Xeiros]

Haven't done a boost leak test yet. Have to wait till tomarrow morning. When I did get it to boost, and the BOV went off, it sounded like a damn horn. It was loud as hell, and sounded nothing like my BOV sounded like when I had my T25 on.

 

[gsxeclipse97]

pushing alot more air. my bov is just as loud as recirculated with the 14b as it was with the t25 vented. or pretty damn near close

 

[DSM4me44]

Sounds like you have the symptoms of a boost leak.

If that doesn't completely fix you stuttering, get new spark plugs and make sure they are gapped right.

90% of problems like this and more are fixed by doing both of those two things.

 

[Xeiros]

Sounds like you have the symptoms of a boost leak.

If that doesn't completely fix you stuttering, get new spark plugs and make sure they are gapped right.

90% of problems like this and more are fixed by doing both of those two things.

I know, because I've fixed problems before by doing both a leak test and spark change. Problem is, spark plugs are new, and this is nothing like any boost leak I've ever experience before.

I did have 2 boost leaks. The hose to my catchcan and the valve cover breather hose weren't connected, but that hardly matters. Putting those back on gave me minimal more power. The turbo still doesn't want to build boost, and when it does, it's making a weird horn-like noise.

Also, the oil pressure is still doing the same as before (up when driving, none while idling).

 

[Turboeagletalon]

For your oil problem. Some how your oil pressure releife valve could be stuck open. Id does happen.

You could also have a bad maft, sending the computer wrong signals. causeing you to fuel cut. I would go buy a haneys or chiltons guide and follow the instructions on how to test them.

Also do a compression test. The problem could lie in your cylinders and you wouldn't even know it.

 

[cooldude919]

If you had no problems before, then something must be hooked up wrong, or the turbo is bad like was said. Did you check for exhaust leaks?

When i did my swap, only problem i had was the oil feed line came loose and i was leaking oil, but i got that fixed and no problems since. BOV sounded just like it did before, just louder.

Compression test is good and all, but you wouldnt go from working fine on a t-25 to be able to build hardly any boost on a 14b just because of bad compression. Keep it simple stupid (KISS) and look at what you changed.

 

[Xeiros]

Yeah, I'm thinking the turbo might be the problem. I've been thinking that since the problems started, though I was hoping it wasn't.

 

[PieEyedPiper]

Does the 14b spin freely?
Does your car smoke?
Is there any oil near or in the inlet of the 14b?

No clue on the oil pressure though, sorry!

 

[Xeiros]

Does the 14b spin freely?
Does your car smoke?
Is there any oil near or in the inlet of the 14b?

No clue on the oil pressure though, sorry!

Yes. When I spin the compressor blade, there is not a feeling of resistance. There is absolutely no shaft play up or down, in or out, or side to side.

Yes, originally, but that was when it still had oil and what not on the turbo and engine. I don't see any smoke coming off it now when it runs.

Not in any large quantity. There might be a slight amount (a drop or two), but thats about it.

 

[Xeiros]

Update:


Started doing a boost leak check, found a leak right at the intercooler connection. Before we got that hooked up, we would get no pressure at all. Now it will build pressure slowly up to 10PSI or so before it won't go any higher.

Also (and this is what worries me) when we pressurize now, we can hear a gurgling, like a fluid is being pushed around. I never heard that before, on my T25, or when it was leaking at the intercooler.

Also, I don't have that ring that was originally on the exhaust manifold in right now, and listening to the air exit when we pressurize, it sounds almost like it's coming from the exhaust manifold. Could that be why?

 

[Rob10_99]

sounds like you have oil in your intercooler!
I had at least a quart in the side mount when my 14b went out(a while ago on another car)

 

[Xeiros]

Nope, not the intercooler. I had my ear to it, and the sound wasn't coming from there. It sounded like it was coming from somewhere in the vicinity of the turbo.

 

[Xeiros]

Update #2

Found the source of the gurgling. It's my oil pan.

Found the source of the 2nd leak. It's along the snap ring on the compressor side of the turbo. Could this be why I'm not maintaining oil pressure and as a result any incoming air is making my oil gurgle?? I'm pretty sure the leak there is my fault, as I did take the turbo apart before putting it on, and probably didn't get the snap ring completely seated in there.

Apart from that though, I can boost up to 8 pounds of PSI now with no hesitation, so at least she runs without scaring the shit out of me now. It will only maintain about 8 pounds reguardless though as thats when pressure starts bleeding off when we pressurize it as well.

 

[DSM4me44]

I know, because I've fixed problems before by doing both a leak test and spark change. Problem is, spark plugs are new, and this is nothing like any boost leak I've ever experience before.

I did have 2 boost leaks. The hose to my catchcan and the valve cover breather hose weren't connected, but that hardly matters. Putting those back on gave me minimal more power. The turbo still doesn't want to build boost, and when it does, it's making a weird horn-like noise.

Also, the oil pressure is still doing the same as before (up when driving, none while idling).

Ah yes a boost leak

 

[PieEyedPiper]

^^ An interesting one though.

Did you completely fix the ring?

Also, its ironic that you found a leak there because I never would have thought thats where your leak would be.
I was actually going to suggest that you not test at the turbo inlet, but rather at the inlet of your IC or any suitable pipe directly after the turbo.
I do this because I believe frequent boost leak tests are probably not healthy for an aging turbo and it's compressor seals. My T-25 happened to leak through to make a bubbling sound in my engine too. Sound could easily be heard through the oil fill hole.
I also never built much pressure because of the leak, so I could never tell if I had any leaks anyhow.
So you can see why I prefer my method when dealing with old turbos.

Lucky for me the unit operates flawlessly when there is oil pressure and still has zero shaftplay at 100k.
My 14b and e316g (en route) are still untested.

 

[the_skin_eater]

Just take it off....I got a 16g you can use......

 

[Xeiros]

Just take it off....I got a 16g you can use......

Haha, yeah, I'll trade ya even up, .


Anyways, does this apply to 2G's as well?

http://www.dsmtuners.com/forums/showthread.php?p=151142110#post151142110

 

[the_skin_eater]

Got a manual???

Just buy an aftermarket one... Im sure the gf will understand.

 

[Xeiros]

I actually do have a manual, but I don't know where it's at at the moment. I've been looking all over for it.