Sr blown intake manifold - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

bkg775 · 02-17-2010, 08:14 AM

Okay guys quick question what are the symptoms for a blown intake manifold gasket? while merging onto traffic and having to give it full throttel a cloud of black smoke flutter behind follwed by bad breaking up and idling leading to the car cutting off. Then while checking it, I found it blew the throttle body gasket loose and it twisted by hand. It wouldnt idle or make any boost then after sraying it with soapy water it kinda fixed itself which makes me believe its a manifold leak. Because it wont idle after giving it boost it dies and it wont move either like a boost leak. I just wanna know what it could be cuz i tried to help my boy out but I'm not sure if this is it or not and engine is fine no knocking smoke or blow threw and still has good compression.

I am pretty sure thats what the problem is but I wanted fellow zilvians input since everythign under the sun has happened to the cars on here, I just cant google the symptoms exactly.

Thanks guys.

Sileighty_85 · 02-17-2010, 10:51 AM

Dont spray your IM with soapy water... at idle the turbo system is under vacuum so your just sucking soapy water into your engine.

If the T/B gasket is blown then replace it and then check it.

I doubt the other I/M gaskets blew seeing that they are metal gaskets.

Z U L8R · 02-17-2010, 11:34 AM

i told you running all that NAAAWWWWWWWWZZZZ was gonna blow the welds on your intake

couldn't help myself

fix what you know is messed up then go from there. and i agree, use carb cleaner spray instead of soapy water to try to find vacuum leaks.

Dave

bkg775 · 02-17-2010, 01:39 PM

thanks guys I just googled to look into that haha Dont worry I knew someone was gonna get me with the intake quote. Ima pull of intake gasket and check IACV it just sucks cuz where I live is freezing right now.

aNskY · 02-18-2010, 07:24 PM

if you think theres another leak besides the gasket... spray carb cleaner around... when you hit the leak your revs will climb...

bkg775 · 02-19-2010, 10:51 AM

fixed it yayness! sucks tho from the car sitting in the cold for so long condensation got to the VC. The filter for the PCV was wet and its a mess. No smoke out the exhaust compression the same and once it warmed up it was fine, time to redo the PCV system. Spraying water on it prolly aint help either cuz it got on filter element on the PCV.
Basically I fixed his car but I was freaking cuz at first seemed like a gasket went then did some googling and found it.
Thanks guys

02-17-2010, 08:14 AM	#1
bkg775 Zilvia Member Join Date: Jun 2008 Location: Va Age: 38 Posts: 260 Trader Rating: (1) Feedback Score: 1 reviews	Sr blown intake manifold Okay guys quick question what are the symptoms for a blown intake manifold gasket? while merging onto traffic and having to give it full throttel a cloud of black smoke flutter behind follwed by bad breaking up and idling leading to the car cutting off. Then while checking it, I found it blew the throttle body gasket loose and it twisted by hand. It wouldnt idle or make any boost then after sraying it with soapy water it kinda fixed itself which makes me believe its a manifold leak. Because it wont idle after giving it boost it dies and it wont move either like a boost leak. I just wanna know what it could be cuz i tried to help my boy out but I'm not sure if this is it or not and engine is fine no knocking smoke or blow threw and still has good compression. I am pretty sure thats what the problem is but I wanted fellow zilvians input since everythign under the sun has happened to the cars on here, I just cant google the symptoms exactly. Thanks guys. __________________ BlackHand

02-17-2010, 10:51 AM	#2
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	Dont spray your IM with soapy water... at idle the turbo system is under vacuum so your just sucking soapy water into your engine. If the T/B gasket is blown then replace it and then check it. I doubt the other I/M gaskets blew seeing that they are metal gaskets. __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

02-17-2010, 11:34 AM	#3
Z U L8R Zilvia FREAK! Join Date: Jan 2007 Location: Georgia Age: 43 Posts: 1,194 Trader Rating: (0) Feedback Score: 0 reviews	i told you running all that NAAAWWWWWWWWZZZZ was gonna blow the welds on your intake couldn't help myself fix what you know is messed up then go from there. and i agree, use carb cleaner spray instead of soapy water to try to find vacuum leaks. Dave __________________ RB25 280z GT30/76R 441hp/381tq 11.9@125

02-17-2010, 01:39 PM	#4
bkg775 Zilvia Member Join Date: Jun 2008 Location: Va Age: 38 Posts: 260 Trader Rating: (1) Feedback Score: 1 reviews	thanks guys I just googled to look into that haha Dont worry I knew someone was gonna get me with the intake quote. Ima pull of intake gasket and check IACV it just sucks cuz where I live is freezing right now. __________________ BlackHand

02-18-2010, 07:24 PM	#5
aNskY Nissanaholic! Join Date: Apr 2005 Location: NY Age: 41 Posts: 1,604 Trader Rating: (10) Feedback Score: 10 reviews	if you think theres another leak besides the gasket... spray carb cleaner around... when you hit the leak your revs will climb... __________________ Bye bye zilvia kiddies

02-19-2010, 10:51 AM	#6
bkg775 Zilvia Member Join Date: Jun 2008 Location: Va Age: 38 Posts: 260 Trader Rating: (1) Feedback Score: 1 reviews	fixed it yayness! sucks tho from the car sitting in the cold for so long condensation got to the VC. The filter for the PCV was wet and its a mess. No smoke out the exhaust compression the same and once it warmed up it was fine, time to redo the PCV system. Spraying water on it prolly aint help either cuz it got on filter element on the PCV. Basically I fixed his car but I was freaking cuz at first seemed like a gasket went then did some googling and found it. Thanks guys __________________ BlackHand