Detecting Vacuum Leaks [MAF Code 33]
Burning Brakes
Joined: Apr 2001
Posts: 1,102
Likes: 8
From: North\East Wisconsin
Re: Detecting Vacuum Leaks [MAF Code 33] (jmr302)
Just curious, why do you suspect a vacuum leak? Code 33 could be the relays (burnoff & power), the MAF itself or an out dated prom chip. Could also be a vacuum leak. :cheers:
Thread Starter
Pro
Joined: Jan 2001
Posts: 681
Likes: 2
From: Newton (Wichita Area) Kansas
Re: Detecting Vacuum Leaks [MAF Code 33] (Derf)
Well either way I still need to rule out a vacuum leak. I've gone on about my Code 33 in other threads but thought I'd start this topic specifically about finding leaks.
I'm worried that the RTV isn't sealing the manifold very well. I installed the intake last summer when it was very hot n' humid here. RTV can half way setup in 2 minutes in those conditions. It's almost impossible to use. My OD pan is leaking because of this.
I'm worried that the RTV isn't sealing the manifold very well. I installed the intake last summer when it was very hot n' humid here. RTV can half way setup in 2 minutes in those conditions. It's almost impossible to use. My OD pan is leaking because of this.
Le Mans Master
Joined: Dec 1999
Posts: 8,540
Likes: 1
From: And on the fifth day, subpoenas were served to Obama senior staff
Re: Detecting Vacuum Leaks [MAF Code 33] (jmr302)
I use propane, long hose. But remember, propane sinks and it burns. Dangerous. If there is a spark you could flash the propane, up the hose to the tank.
I move the hose to suspect areas and turn the valve on. You will get a rise or a bog at a vacuum leak. Shut off between attempts or areas and let the propane clear.
Hey, it's safer then starting fluid. :eek:
I move the hose to suspect areas and turn the valve on. You will get a rise or a bog at a vacuum leak. Shut off between attempts or areas and let the propane clear.
Hey, it's safer then starting fluid. :eek:
Race Director
Joined: Aug 2000
Posts: 14,130
Likes: 7
Cruise-In II Veteran
Re: Detecting Vacuum Leaks [MAF Code 33] (kenfusion)
I agree....carb cleaner works best for me.Many times I cant hear the vacuum leak and the carb spray always finds it with the change in rpms when doing spot sprays.
It wont ignite either.
Try some gumout carb or TB spray cleaner and it can help track down those pesky vac. leaks.
:)
It wont ignite either.
Try some gumout carb or TB spray cleaner and it can help track down those pesky vac. leaks.
:)
