Narrow down all these opinions for me...

[B 4 You]

Okay, I've been doing hours of research on these forums with no concise results. Everyone seems to have a different, entirely right opinion on the same thing. Please continue reading after looking at this picture (not my car):



*The colored dots are all hoses, and the thick (orange and black) arrows are pointing to the nipples. The teal and pink arrows are pointing to the rubber hoses, NOT the lines, meaning taking the hose off of the line completely.*

I'm just going to reiterate everything here in case someone didn't see it on other threads, because I really want to get to the bottom of this. I have a '92 with no modifications other than a transmission cooler and some audio stuff. My car runs absolutely perfect. Idles as smooth as butter at ~650rpm, has stalled only once in my three years of owning it, I think the TPS needs to be adjusted, blah blah blah. I have a check engine light. It is for the EGR. My year SVX only has that one sensor, code 34 I think it is, just showing that the EGR is dirty. I have a bottle of seafoam, as a friend and some other random sources said that it couldn't possibly hurt to try. After a bunch of research, I found out that the vacuum line I wanted to put seafoam into would be BLUE dot. To be more specific, NOT the nipple, but the hose. Unplug the hose from the nipple (black arrow), cover the nipple, and stick the hose in the seafoam. I used a clear shot glass full of seafoam as to not flood the engine. Getting the engine to it's ideal operating temperature, I stuck the hose into the seafoam. Nothing. Didn't suck, didn't blow, nothing. The nipple wasn't doing anything either. Turned the car off. Waited a little, as Icingdeath told me that there is possibly a solenoid that hinders vacuum flow through that line, and tried again. Still, nothing. Frustrated, I did some more forum searching, and tried the RED dot. Took the hose out, stuck it in the shot glass, and covered the nipple as before. Nothing. BUT THEN, it started, very very slowly to suck in the seafoam. Then I took it out of the glass, and it started to spit a little bit of it back, and was blowing a very small amount of air. I tried to duplicate this, and it didn't do anything the next time I tried it. The nipple (orange arrow) on the passenger side of the car seemed to have a bit of suction to it when the hose was sucking the seafoam, but not very much. I proceeded to put the shot glass up to the nipple, and it sucked some of it in [all this time, less than 1oz of seafoam total was in the car's vacuum system]. Knowing that this worked, I took off a small amount of hose from my windshield washer line and put it onto the (black arrow) driver side nipple. It started sucking in the seafoam, and I proceeded to put about a fourth of the can into it, then shut the car off immediately. 10 minutes later, Started it back up, and it smoked for about 3 seconds, then nothing. Didn't have a hard time running or anything.

Did I do this right...?

SO many people say put it in the blue dot. NO, THE GREEN ONE. no the YELLOW ONE. etc. etc.. etc...

Which hose do I use?

The blue one had no suction at all. The red one had a little. I didn't try the green or yellow ones. Some people said to use the teal or pink arrow lines, which would in turn lead back to either nipple.

Again, I'm not entirely interested in cleaning out the throttle body. I would just really like for the seafoam to pass the EGR and attempt to clean it out.

The other thing, it could be a coincidence or not, but because my EGR is bad, it throws a CEL. The CEL only comes on when the engine is warm. I've never turned the car on in the morning for the first time that day and got a light. If it's cold enough out and I let the car sit, the light won't show up either. If I go into walmart for 30 minutes and come back, boom, CEL on. Now, I went to park the car tonight after unsuccessfully seafoaming it, and turned it off. Turned it back on: no CEL. Off... on: no CEL, still. And then one more time. No CEL. It might just be a coincidence, but I'm not sure.

Can someone please tell me where to put it? Everyone has a different opinion. I want to hear them though. Please describe which hose/nipple with the colors in my photo so I (and others in the future) can know which line you're talking about.

As far as I know from what people have said here, the brake booster line (not pictured) is a no-go, since it only goes to one cylinder and can flood it. The blue dot hose should pass by the EGR. The red one goes to the engine, but not the EGR. The orange and black arrow nipples (pink and teal arrows, also) go into the throttle body. The yellow dot goes into the engine and is a good one, but doesn't touch the EGR. The green one is bad and can flood the engine by sucking up a lot of fluid. The white dotted ones in the back can also be used, but I'm not sure what for. I want any help I can get. Help me seafoam my car, but through the EGR.

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