HELP! 95 Camaro 3.4 L V6 EGR & gas loss problem - CamaroZ28.Com Message Board


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Old 03-10-2006, 12:50 PM   #2
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Re: HELP! 95 Camaro 3.4 L V6 EGR & gas loss problem

It might smell like gas coming from the exhaust, but I highly doubt unburnt gas is making it through the engine unless it is miss firing completely. In any case it wouldn't run right then. The "gas" coming out the pipes might just be water coming from the cat. If the cat is working right it is normal to see water coming out the exhaust.

Has your milage gone down a ton?
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Old 03-10-2006, 04:22 PM   #3
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Re: HELP! 95 Camaro 3.4 L V6 EGR & gas loss problem

have you ever changed your VAPOR CANISTER??
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Old 03-10-2006, 09:36 PM   #4
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Re: HELP! 95 Camaro 3.4 L V6 EGR & gas loss problem

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Originally Posted by GALIATHON
have you ever changed your VAPOR CANISTER??
yes you can but they are expensive as hell.

But back to the topic at hand. There is no way that I can think of raw unburnt gas could be shooting out of the tail pipe let alone a whole foot out of the tail pipe. Are you absolutly 100% sure its gas. I think what you are smelling is a car running extreamly rich and the "gas" you are seeing is water from the cat doing its job properly and that is totaly normal. Take it to a different shop one that is ASE and tech net certified and have them hook up the scaner to it and take a look at your long term fuel trims for each bank and see what they look like. They should be at about 128 counts. Is the check engine light on? Does the check engine light even come on during the bulb check when you turn the key to the "ON" position.
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Old 03-11-2006, 12:10 AM   #6
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Re: HELP! 95 Camaro 3.4 L V6 EGR & gas loss problem

well 15 mpg is pretty bad on a 3.4 IMO. I do heavy city driving with a lead foot and getting nearly 18 mpg. But first smoke is bad very very bad. Black means its running way too rich. White with a sweet smell to it is coolant. And a bluish white smoke that smells like burning rubber is oil. First I would get it scaned and see what codes the computer is throwing to make the check engine light comming on. The EGR is used to controle NOx emmisions by allowing exhaust gases to be sucked into the fresh air going into the engine to lower the combustion chamber temps. Under a certant load, temp, speed, and throttle position the EGR opens a certant ammount and the computer takes away just a tiny bit of fuel out of incoming air but nothing like you are discribing. You have a problem wether it be a leaking injector or a FPR or some input sensor going bad. YOu need it looked at or get a hold of a scanner and see what the computer is seeing.

And about tech net here is a link to a store locator.
http://technet.know-where.com/technet/
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Old 03-11-2006, 12:15 PM   #8
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Re: HELP! 95 Camaro 3.4 L V6 EGR & gas loss problem

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Originally Posted by Katies95Camaro
Now its looks pretty good, I wish it would run right! Could be worse.
5 times my 89 GTA 5.7 L has sat at a light & suddenly floored its own gas peddle. Now that's freaky!
Is its name Christine?

A blocked EGR/AIR should not do much. People do that to LT1's all the time without getting them programmed out and nothing happens. I would say O2 sensors, but you said those were changed. I'd say check them again since it's been a whole year. That is really one of the only things I can think of that would cause such horrible gas milage, other than very leaky injectors.
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Old 03-11-2006, 01:34 PM   #9
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Re: HELP! 95 Camaro 3.4 L V6 EGR & gas loss problem

check to make sure you getting good cam and crank position signal to the computer. If either one of them go out the computer defaults to MPFI insteas of SPFI.
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Old 03-12-2006, 10:41 AM   #11
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Re: HELP! 95 Camaro 3.4 L V6 EGR & gas loss problem

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Originally Posted by Katies95Camaro
Now they say they don't know why. I gotta find smarter mechanics!

You nailed it right there. Go find somebody that will quit screwing around and will actually fix it. My best friend got into a similar situation with his '95 3.8. He took it to a transmission shop, and over the course of 3 1/2 MONTHS and spending $1700 dollars, all they did was break the dash into a million pieces and cut the wiring harness.
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Old 03-17-2006, 01:48 PM   #12
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Re: HELP! 95 Camaro 3.4 L V6 EGR & gas loss problem

I had a similar problem, so maybe i can help. I have a '94 3.4 v6. My car was doing the same thing as yours, I believe. When I floored the gas pedal liquid gas vapor would pour out of the tailpipe. It was gas, I put my hand over the pipe and then smelled it. Wasn't just exhaust. So I got to poking around under the hood. There was a tube on the EGR that had burned/rusted through and was letting exhaust escape. You could hear it on heavy throttle leaking exhaust out this hole. Also, I was having some problem with a vaccum line that went into the top of the engine at the same time. The combo could have been the problem. Anyway, this has been along time ago, so if memory serves I went to a junkyard and picked up a new EGR valve and put it in place of my old one. Started working just fine after that. No gas out the tailpipe, fuel mileage went from 12 mpg highway to around 20. Now, this may not be the same as your problem, but look around your EGR for a leak and if you find one proceed from there. I'm not the biggest gearhead, so if anyone wants to disagree or add to this, please do. I'd rather help and be corrected than to give bad advice.

Last edited by gunsnroses67; 03-17-2006 at 01:50 PM.
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