Bubbling noises

cre · 03-13-2012, 03:47 PM

It's not uncommon for a compression test to show a tiny leak in the HG. If the system doesn't burp the gas out normally after a couple full heat and cool down cycles you may want to burp it manually and see if the gurgle returns. If it does, inspect for leaks, test the pH of the coolant (to test for the presence of caustic combustion gasses), pressure test the radiator cap.

lmmr74 · 03-21-2012, 05:14 PM

How about the fuel smell inside the car on passengers side? I also notice that the revs are allways at 1000 at iddle after car warms up, they shoud be around 750-800, isn't it?

I heard it can be a fuel leak or even the charcoal canister...

cre · 03-21-2012, 10:39 PM

The smell could definitely be either. When the smell is at its strongest will be a significant indicator.

It could be a fuel leak at any of the junctions in the fuel supply or return; a leak in the injector seals on the fuel rail side (these little guys are very easy to pinch); a leak on the seals on the head side doesn't typically smell too strongly of fuel unless you're boosting.

A charcoal canister wouldn't really smell unless the BVSV wasn't opening and the check valve on the fresh air inlet was shot OR someone deleted it and didn't do it properly. The EVAP system is low pressure so you're not likely to notice the smell to any significant degree unless it's hot out or the engine is off and you've driven recently thus agitating the fuel in the tank.

You need to replace copper or aluminum washers every time they're removed. If you remove the injectors after the car's been run for 30K to 40K mi. or so you should replace the rubber O rings on the fuel rail side; This isn't a must, just safe.

CanadianBak'inSupra · 03-22-2012, 03:56 AM

strongly agree with the injector seals, i have done this on all the Supra's i have owned, im not sure how mine were not leaking from the sheer age of them...
i "think" the felpro hg set comes with the fuel line washers and a few of the injector seals. but i am unsure as to rail, or manifold side?

wouldnt hurt to clean your charcoal canister.

03-13-2012, 03:47 PM	#1
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	It's not uncommon for a compression test to show a tiny leak in the HG. If the system doesn't burp the gas out normally after a couple full heat and cool down cycles you may want to burp it manually and see if the gurgle returns. If it does, inspect for leaks, test the pH of the coolant (to test for the presence of caustic combustion gasses), pressure test the radiator cap. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

03-21-2012, 10:39 PM	#3
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	The smell could definitely be either. When the smell is at its strongest will be a significant indicator. It could be a fuel leak at any of the junctions in the fuel supply or return; a leak in the injector seals on the fuel rail side (these little guys are very easy to pinch); a leak on the seals on the head side doesn't typically smell too strongly of fuel unless you're boosting. A charcoal canister wouldn't really smell unless the BVSV wasn't opening and the check valve on the fresh air inlet was shot OR someone deleted it and didn't do it properly. The EVAP system is low pressure so you're not likely to notice the smell to any significant degree unless it's hot out or the engine is off and you've driven recently thus agitating the fuel in the tank. You need to replace copper or aluminum washers every time they're removed. If you remove the injectors after the car's been run for 30K to 40K mi. or so you should replace the rubber O rings on the fuel rail side; This isn't a must, just safe. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

03-22-2012, 03:56 AM	#4
CanadianBak'inSupra Official hall monitor / search nazi - NO SOUP FOR YOU! Join Date: Oct 2009 Location: Canada, BC Posts: 837	strongly agree with the injector seals, i have done this on all the Supra's i have owned, im not sure how mine were not leaking from the sheer age of them... i "think" the felpro hg set comes with the fuel line washers and a few of the injector seals. but i am unsure as to rail, or manifold side? wouldnt hurt to clean your charcoal canister. __________________ 1984 supra - 1uzfe - w58 - 4.10 - 1 piece aluminum shaft.

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03-21-2012, 05:14 PM	#2
lmmr74 Stock Join Date: Aug 2011 Location: Portugal Posts: 21	How about the fuel smell inside the car on passengers side? I also notice that the revs are allways at 1000 at iddle after car warms up, they shoud be around 750-800, isn't it? I heard it can be a fuel leak or even the charcoal canister...