C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Rubber under gas cap......

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Old Feb 12, 2010 | 03:42 PM
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Default Rubber under gas cap......

Anyone know where I can get one? Mine is torn and I believe it is causing a problem.

This one

Last edited by Weav's Vet; Dec 22, 2013 at 01:22 PM.
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Old Feb 12, 2010 | 04:27 PM
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You might try a Vette salvage yard:
-Vett2Vette (our vendor)
-Contemporary Corvette (http://www.contemporarycorvette.com/)
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Old Feb 12, 2010 | 04:29 PM
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Originally Posted by 65Z01
You might try a Vette salvage yard:
-Vett2Vette (our vendor)
-Contemporary Corvette (http://www.contemporarycorvette.com/)
Can't get them new I guess. Ok, much appreciated.
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Old Feb 12, 2010 | 04:32 PM
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Originally Posted by Weav's Vet
Can't get them new I guess. Ok, much appreciated.
Sure you can. Try Zip or the Last Detail
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Old Feb 12, 2010 | 04:34 PM
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Originally Posted by nutz4c4
Sure you can. Try Zip or the Last Detail
Good deal, thanks! I don't mind a used one but I'm afraid it would tare just like mine did when installing it.

I'll try ZIP.
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Old Feb 12, 2010 | 04:37 PM
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Thats the problem. I got REALLY lucky when I did my fuel pump and didn't tear it. If I go in again I'll have a new one on hand.
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Old Feb 12, 2010 | 04:39 PM
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Other than rusted fuel tank sending unit bolts, what problems would a torn rubber thingy cause?

Last edited by 383vett; Feb 12, 2010 at 04:42 PM.
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Old Feb 12, 2010 | 04:48 PM
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Originally Posted by 383vett
Other than rusted fuel tank sending unit bolts, what problems would a torn rubber thigy cause?
I have a fuel pressure issue and I'm just wondering if the filter is plugged up some. It's less than a year old though and so is the pump. The FP goes to 42 when I turn the switch on then falls immediately to 40. If I crank the car, which sometimes is difficult it goes down to about 35 at idle. If I don't crank the car and just cut off the switch it falls down to 36 or so in about 10 min. not good. I've had three different regulars on there and I guess maybe the one that's on there now is gone. Either that or a new injector is leaking, which I doubt. The injectors are new FMS 30# Red Tops. I was just going to go back and make sure the tank wasn't leaking and the filter was plugged up or something. Need a new gasket there anyway.
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Old Feb 12, 2010 | 05:00 PM
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What I think was killing my regulators is this......

When I did this cam swap I broke the little hard vacuum hose that goes to the regulator. I asked on here if it was ok to run just a soft piece o regular vac hose and I was told it was. So that is what I did. I believe the larger dia. hose makes the regular or get more vacuum and is destroying the diagram in the regulator. I spliced the OE hose together and it's on there now but the larger hose was on this current regulator for a while so I guess it's bad now because the vac hose reeks of gas. Seems I'm just doomed with this car..........
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Old Feb 12, 2010 | 05:21 PM
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With the vac hose connected and at idle the fp is 35. With the vac hose disconnected the fp is 43. Looks like another regulator, damit!
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Old Feb 12, 2010 | 05:45 PM
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I dont know how ripped it is, but I used super-glue on mine and it works great... Looks like new after a soak in some armorall! Give it a try, I used lock-tight super-glue (blue and silver container) its the best glue I have ever used.
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Old Feb 12, 2010 | 05:59 PM
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I repaired mine as well, I used black RTV.
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Old Feb 12, 2010 | 05:59 PM
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I'll try ZIP.
I checked with Corvette America and couldn't fine one listed; hope you have good luck with ZIP...

With the vac hose connected and at idle the fp is 35. With the vac hose disconnected the fp is 43.
Sounds about normal to me, though 35psi would be a tad low for my needs.

The ECM is set up to operate in closed loop at the lower pressure; at WOT vacuum drops to (near) zero so you get adequate flow when needed.
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Old Feb 12, 2010 | 06:12 PM
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Here you go....WW

http://www.parts123.com/parts123/yb....Z5Z5Z50000050F
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Old Feb 12, 2010 | 06:14 PM
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Originally Posted by 65Z01
I checked with Corvette America and couldn't fine one listed; hope you have good luck with ZIP...

Sounds about normal to me, though 35psi would be a tad low for my needs.

The ECM is set up to operate in closed loop at the lower pressure; at WOT vacuum drops to (near) zero so you get adequate flow when needed.
Something is causing this hard start issue and I'm clueless as to what it might be if it's not the regulator or fuel filter. It only does it after it has sat overnight. Any other time it fires right up.
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Old Feb 12, 2010 | 06:16 PM
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Thanks WW
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Old Feb 12, 2010 | 06:22 PM
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With the fuel pressure dropping so fast when I cut it off isn't that a sign of a bad regulator? It should hold good pressure for quite some time shouldn't it?
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Old Feb 12, 2010 | 06:25 PM
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Originally Posted by Weav's Vet
What I think was killing my regulators is this......

When I did this cam swap I broke the little hard vacuum hose that goes to the regulator. I asked on here if it was ok to run just a soft piece o regular vac hose and I was told it was. So that is what I did. I believe the larger dia. hose makes the regular or get more vacuum and is destroying the diagram in the regulator. I spliced the OE hose together and it's on there now but the larger hose was on this current regulator for a while so I guess it's bad now because the vac hose reeks of gas. Seems I'm just doomed with this car..........
Mike, you can use soft hose on the regulator , I know of quite a few that have done it including myself.As a matter of fact almost all my hoses have been replaced with soft hose years ago .The inside diameter of the soft hose should be about the same size and it won't hurt anything if its not exactly the same. Fuel pressure dropping fast could also be an injector, or injectors leaking down....WW

Last edited by WW7; Feb 12, 2010 at 06:28 PM.
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Old Feb 12, 2010 | 06:26 PM
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Originally Posted by WW7
Mike, you can use soft hose on the regulator , I know of quite a few that have done it including myself.As a matter of fact almost all my hoses have been replaced with soft hose years ago .The inside diameter of the soft hose should be about the same size and it won't hurt anything if its not exactly the same....WW
Okay, then what is killing these regulators if it isn't vacuum?
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Old Feb 12, 2010 | 06:27 PM
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I got a nice repro off ebay 2 years ago for around $20. Did you look there ??
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