Really big leak at tps after seal replacement.

[Alex Bland]

alright i just changes my tb shaft seals and then i put it all back together and put it in my car and there is a big leak at the tps (car wont even run) at first it would slightly run then i took off the fuel rail to tighten both the screws now it wont run at all and i can hear alot of air going in from there.

someone please help

 

[belalerede]

You probably pinched on of the seals. With the car all together spray a little starting fluid where you think the leak might be if the car starts your right.

 

[awdtalon21]

Did you use seals or o-rings?

 

[Alex Bland]

Alright i found the leak im just confused.. and i used seals.. its not leaking at the tps.. its leaking at the where the tb and intake mani attaches. theres that big O shape on the tb right there that its leaking into ill try to find a pic online


alright the spot in red is where it feels like its leaking. and i was just woundering if the gasket should cover the spot in blue or the top 2 holes? but that spot in red it where i can feel air like sucking threw

i also shot some contact cleaner in there and the rpm's jumped up

 

[awdtalon21]

Yes the oem gasket will cover all the holes. Here is the part number MD146399

Its the bottom right one
http://www.extremepsi.com/store/images//t_19259.jpg

 

[ArmyGSX]

Looks like a freeze plug for the FIAV. Maybe put some type of sealent around it...

Or you could just remove the FIAV and be done with it. It will just be a minor PITA to keep running until warmed up during the winter.

 

[awdtalon21]

Are you sure its leaking at that plug, and not at the gasket. I really doubt its leaking from there unless you had that plug out before.

 

[Alex Bland]

ive changed the gasket like 3 times in the last 2 days and it feel like right there is leaking when cars running.. but would air be comeing out? looks like coolant would be

 

[LiquidX]

Did you put a thin coat of RTV on on both sides of the gaskets you are using? When you installed the seals, did you use a lubrication grease on the parts of the seals that contact metal?

 

[Alex Bland]

Did you put a thin coat of RTV on on both sides of the gaskets you are using? When you installed the seals, did you use a lubrication grease on the parts of the seals that contact metal?

yes i put RVT on the gaskets... and i just used wd-40 for the seals and sprayed them when they where out of the tb and when i put them in

 

[awdtalon21]

ive changed the gasket like 3 times in the last 2 days and it feel like right there is leaking when cars running.. but would air be comeing out? looks like coolant would be

I cant say for sure but i doubt there would be a freeze plug for air, it would have to be for coolant, the plug would give if it got too hot.

If its leaking as bad as you say it is, you should be able to see if that plug is bad, might as well take it off and recheck everything again. But i really don't think its the plug.

 

[Alex Bland]

I cant say for sure but i doubt there would be a freeze plug for air, it would have to be for coolant, the plug would give if it got too hot.

If its leaking as bad as you say it is, you should be able to see if that plug is bad, might as well take it off and recheck everything again. But i really don't think its the plug.

i just took it all apart again and i just dont see why its doing this! its making me mad. maybe i put it back together wrong? ive had it all torn apart 4 times now i dont know what else to try. is there a way to test the tb with it off the car?

 

[awdtalon21]

You could bolt it up to a spare intake manifold, but you would have to block off all the holes where air would escape.

 

[Alex Bland]

You could bolt it up to a spare intake manifold, but you would have to block off all the holes where air would escape.

i think i might just have to go to a junk yard and find one see if i cant tear it apart there and see if i messed up

 

[LiquidX]

Bolt it back up properly the way you were doing and get a spray bottle of soap and water. Spray it ALL OVER the TB and see where bubbles are forming. That will show you where you are leaking from exactly and you can go from there.

I should have mentioned that earlier. Best to do a boost leak test and see if there are any other leaks in the pressurized air system.

 

[Alex Bland]

Bolt it back up properly the way you were doing and get a spray bottle of soap and water. Spray it ALL OVER the TB and see where bubbles are forming. That will show you where you are leaking from exactly and you can go from there.

I should have mentioned that earlier. Best to do a boost leak test and see if there are any other leaks in the pressurized air system.

i sant see where it is cause its under the tb by the freeze plug, the leaks so big i can put my hand on the plug and feel the air pulling in

ok i think im gunna order new seala and try this over again, one question witch way does the seal go in? #1 or #2 i labled so it would be easyer

 

[LiquidX]

Yes you can feel it, but without pressurizing the system you won't be able to accurately pinpoint the leak. Just hook up the boost leak tester at the throttle body elbow and start spraying. You may be surprise where it's leaking from.

 

[Alex Bland]

yeah but i was tryin to try that i cant really see the bubbles when its under it. i tryed too and i could just feel air from under there and it wasnt making any bubble it was just blowing out to hard

 

[LiquidX]

So you're positive it's not a split vacuum line or something other than a claimed bad TB?

 

[Alex Bland]

So you're positive it's not a split vacuum line or something other than a claimed bad TB?

very much positive..ill post back on here tomarrow im gunna run to a junk yard but you have been alot of help and i hope you help me more tomarrow if you can. the reason im so sure is that when the cars on i can move my hand over that freeze plug and the leak start to go away as i lay my hand on it then i move my hand and my car starts to die and u can hear the leak again

 

[awdtalon21]

i sant see where it is cause its under the tb by the freeze plug, the leaks so big i can put my hand on the plug and feel the air pulling in

ok i think im gunna order new seala and try this over again, one question witch way does the seal go in? #1 or #2 i labled so it would be easyer

the seals go in #1

 

[Colt4G63 also]

The side of the seal labeled #2 faces inward. Just like an oil seal. If you take them out again, lube them with silicone paste, or at least engine oil. WD40 is not a lubricant, it's a water displacement spray.

That other dude is right about the BLT with soapy water. If you can't see the spot, get a mirror. That's always going to be more accurate than trying to feel air sucking in on a running engine.

 

[Alex Bland]

alright so i went to the junk yard and the seals are in backwords on mine (i checked on 2 tb's there) and ive noticed with mine the nut/locking washer i cant tighten it down too hard or else it doesnt turn. anyway ill try to flip them around and see what happends. also there is the green and silverish/gold spring.. i marked the silverish one but the green on just loops around once right?

alright im feelin good about this now..i changed a few things and tightend down the tps bolt under it tigher and it still turns smooth. only one problem now i kinda used all my gaskets for my tb so i used some black rvt for now i know it will more then likly leak from there. but just seeing if it works now and if it does im ordering some gaskets offline not the napa cheep ones.