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Old 07-29-2011, 06:46 AM   #31
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Re: Camaro Starting Issues

Vapors can and should be arriving in the intake, but I'm not sure of any way for them to reach the oil that hasn't already been discussed.

GM did have a redesign for that solenoid. Was your original one a rectangle/box shape and the new one a cylinder shape?

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Old 07-29-2011, 07:01 AM   #32
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Re: Camaro Starting Issues

if cookies will allow...
old...http://www.autozone.com/autozone/par...er=124311_0_0_

new...http://shop.advanceautoparts.com/web...purge+solenoid
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Old 07-29-2011, 08:18 AM   #33
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Re: Camaro Starting Issues

Cookies didn't allow the new one.

Anyway I think I screwed that up, I was talking about the vent solenoid and you're talking about the purge solenoid...we may even have had this discussion before. D'oh! Stupid me.
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Old 07-29-2011, 12:25 PM   #34
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Re: Camaro Starting Issues

well, in short...

the new one has the inlet and outlet at opposite ends, while the old one had them both at one end.
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Old 08-01-2011, 08:47 PM   #35
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Re: Camaro Starting Issues

I'm just reading this now, but when you said it started fine if you opened it up, I though leaky injectors. If it was a bad check valve on the pump the throttle wouldn't help at all, it would just add more air to a too lean condition.

Despite what your mechanic said, a fuel system should always have pressure. It should change very little from when you turn it off, to when you start it a few days later. If it's dropping off then there is a leak somewhere. If your not smelling it, then it's likely at one of the ends, pump or injectors.

A easy test: If you crank it and it doesn't start, sniff the tale pipe. If it smells like unburned fuel then you are getting some fuel. This will let you know it's a leaky injector or an ignition problem.
If you prime the system and it starts off running crappy like one cylinder is missing this is also a sine of a leaky injector. The cylinder it's leaking in to has too much fuel to burn. This shouldn't last very long though, as it will pump it out in a few revolutions.

If it was my car (I'm not recommending you do this), I'd let it sit for a few hours after running. Maybe prime the fuel system a few time during this time. Then pull all the plugs and sniff test each hole. I bet one will smell much stronger.
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