Chasing down an air leak........ could it be? - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

HufferSS · 05-31-2011, 02:04 PM

Smoke machines were invented to stop stumbling around in the dark when it comes to vacuum and emissions leaks. If you CAN find it with a visual inspection or carb clean...then a smoke machine can find it in about 1% of the time that you would spend doing it the 1984 way.

PQ · 05-31-2011, 02:12 PM

Quote:

Originally Posted by hypurone

As simple as crimping shut the supply line to it at the manifold end...

But the vacuum comes from that end. Wouldn't I need to do that from the other end? And how could I do it. I'd have to get behind the firewall right?

Quote:

Originally Posted by HufferSS

Smoke machines were invented to stop stumbling around in the dark when it comes to vacuum and emissions leaks. If you CAN find it with a visual inspection or carb clean...then a smoke machine can find it in about 1% of the time that you would spend doing it the 1984 way.

I'll have to check that out. Any idea of a known shop?

HufferSS · 05-31-2011, 02:32 PM

Any shop worth a hoot will have a smoke machine.....look for one that has a reputation for working on more modern stuff or being a good diagnostic shop....but it's a pretty common tool for a commercial repair garage to have.

All it is a machine that literally creates smoke. You can plugin to your vacuum system and hit the button....watch for smoke. You can add dye and use lights etc to find tiny leaks....it's pretty cool tool.

PQ · 05-31-2011, 02:37 PM

Maybe I should start smoking again and use a cigarrete?

hypurone · 05-31-2011, 02:39 PM

Quote:

Originally Posted by PQ

But the vacuum comes from that end. Wouldn't I need to do that from the other end? And how could I do it. I'd have to get behind the firewall right?

No, the vacuum is generated at the intake manifold/maggie and fed to the booster via the line. You want to crimp it shut at the manifold end to eliminate the booster, line and check valve. If that identifies the prob, then you can work your way down the line to see what component is the prob. Capiche?

anthonyj9h · 05-31-2011, 02:40 PM

what he said sorry got a lil busy

PQ · 05-31-2011, 02:42 PM

Quote:

Originally Posted by hypurone

No, the vacuum is generated at the intake manifold/maggie and fed to the booster via the line. You want to crimp it shut at the manifold end to eliminate the booster, line and check valve. If that identifies the prob, then you can work your way down the line to see what component is the prob. Capiche?

So, if there is no change when I do that. Then it's NOT the check valve at the brake booster?

I took the hose OFF of the valve at the brake booster and plugged the hose with my finger. It was still missing. So I guess that's the same thing.

hypurone · 05-31-2011, 02:46 PM

Quote:

Originally Posted by PQ

So, if there is no change when I do that. Then it's NOT the check valve at the brake booster?

I took the hose OFF of the valve at the brake booster and plugged the hose with my finger. It was still missing. So I guess that's the same thing.

Sort of, you were downstream of the check valve so technically it could still be the problem... Crimp it upstream of the valve or remove the valve and plug the line to be sure.

PQ · 05-31-2011, 02:52 PM

Quote:

Originally Posted by hypurone

Sort of, you were downstream of the check valve so technically it could still be the problem... Crimp it upstream of the valve or remove the valve and plug the line to be sure.

The L99 doesn't have the canister. Only the fitting that plugs straight into the firewall. I suppose I could pull it out and plugg it from there, with my finger. That would work, but since I still have the problem plugging the hose at the blower, I guess I'm ok?

hypurone · 05-31-2011, 03:58 PM

Quote:

Originally Posted by PQ

The L99 doesn't have the canister. Only the fitting that plugs straight into the firewall. I suppose I could pull it out and plugg it from there, with my finger. That would work, but since I still have the problem plugging the hose at the blower, I guess I'm ok?

Yeah, sorry. I misread your post. If you disconnected the hose on the intake side of the check valve you should be good at that area then...

Speedy1975 · 05-31-2011, 04:38 PM

Are you seeing any CEL codes? Typically with any VAC leak you'll get a CEL especially if it's bad enough to cause the engine to idle erratically.

Is it just a bad idle (erratic) or are you sure it's a true miss of the engine?

Did you post up video?

Ltdodge · 05-31-2011, 05:20 PM

man this sucks Randy.....hope you figure it out

i think your new nickname is Schleprock from the flintstones... remember him?

PQ · 05-31-2011, 05:21 PM

Quote:

Originally Posted by Speedy1975

Are you seeing any CEL codes? Typically with any VAC leak you'll get a CEL especially if it's bad enough to cause the engine to idle erratically.

Is it just a bad idle (erratic) or are you sure it's a true miss of the engine?

Did you post up video?

I did post a video. Let me go get it and post it here.

Quote:

Originally Posted by Ltdodge

man this sucks Randy.....hope you figure it out

i think your new nickname is Schleprock from the flintstones... remember him?

PQ · 05-31-2011, 05:25 PM

05-31-2011, 02:37 PM	#18
PQ Booooosted. Drives: 2010 Supercharged SS Join Date: Apr 2008 Location: Mobile, AL Posts: 36,716 View My Garage	Maybe I should start smoking again and use a cigarrete? __________________

05-31-2011, 04:38 PM	#25
Speedy1975 FASTER! Drives: Challenger Hellcat, 2SS Camaro Join Date: Apr 2008 Location: Middle Tennessee Posts: 2,245	Are you seeing any CEL codes? Typically with any VAC leak you'll get a CEL especially if it's bad enough to cause the engine to idle erratically. Is it just a bad idle (erratic) or are you sure it's a true miss of the engine? Did you post up video? __________________ -Speedy 2016 Go Mango Challenger Hellcat (PB E.T. in 1/4 Mile 9.83 @ 140MPH)

05-31-2011, 05:20 PM	#26
Ltdodge Drives: 2008 Z06 Join Date: Apr 2009 Location: Oviedo, Florida Posts: 891	man this sucks Randy.....hope you figure it out i think your new nickname is Schleprock from the flintstones... remember him? Attached Images __________________

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Roto-Fab \| Engine Covers - S/C \| Fuse Relay Cover \| Radiator Cover \| Billet Oil Cap+	AutoAgenda	Exterior Parts & Accessories	14	02-06-2013 08:43 PM
What do all the abbreviations mean?	CrzyGamr2	5th Gen Camaro SS LS LT General Discussions	77	12-07-2012 04:34 AM
g5cr cai system anybody install or looking at one "pics"	camarossrs2150	Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons	41	07-14-2011 08:26 PM
Cold Air Intakes 2010 Camaro Blowout! K&N \| AIRAID \| SLP \| Best Price Guaranteed! PM	AutoAgenda	V8 Bolt-Ons & Tunes	47	01-12-2011 12:35 PM

05-31-2011, 02:04 PM	#15
HufferSS I Wanna Go Faster!! Drives: 2011 2SS Synergy Green M6 Join Date: Apr 2011 Location: SC Posts: 3,323	Smoke machines were invented to stop stumbling around in the dark when it comes to vacuum and emissions leaks. If you CAN find it with a visual inspection or carb clean...then a smoke machine can find it in about 1% of the time that you would spend doing it the 1984 way.

05-31-2011, 02:32 PM	#17
HufferSS I Wanna Go Faster!! Drives: 2011 2SS Synergy Green M6 Join Date: Apr 2011 Location: SC Posts: 3,323	Any shop worth a hoot will have a smoke machine.....look for one that has a reputation for working on more modern stuff or being a good diagnostic shop....but it's a pretty common tool for a commercial repair garage to have. All it is a machine that literally creates smoke. You can plugin to your vacuum system and hit the button....watch for smoke. You can add dye and use lights etc to find tiny leaks....it's pretty cool tool.