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

Warning/advisement...

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Old 06-02-2008, 03:52 PM
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schrade
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Default Warning/advisement...

I'm about to pull the trigger on my gasket replacement/carbon grease cleanup.

I was not going to change the oil until after I fired the thing, so any debris NOT SHOP-VAC'ED would run down after it warm up.

BUT, I took a whiff of the dipstick, to see if it smelled like gas still. IT IS VERY STRONG.

I noticed gas was dripping from the fuel line a few days after I started dis-assembly. My tanks was almost full, I think. I had capped off the line, BUT THE AIR PRESSURE IN THE TANK WAS ENOUGH TO PUSH FUEL UP THE LINE, EVEN WITH NO POWER TO THE PUMP, AND THE FRONT END IN THE AIR.

Notice in pic 43
http://forums.corvetteforum.com/show...2033363&page=2
you can tell gas has been dripping into the lifter valley at #8 cylinder.

If the stick didn't smell so strong, I would fire it. but I don't know how much gas is in the crankcase.

THIS AIR PRESSURE IN THE TANK THAT PUSHES FUEL MIGHT BE HOW 87 RAG LOST HIS CAR TO FIRE.
http://forums.corvetteforum.com/show....php?t=1995473

TAKE THE GAS CAP OFF WHEN YOU DISCONNECT THE LINES.
Old 06-02-2008, 04:01 PM
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Z51L9889
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Good advice. Please note, however, that fuel may run from the open lines when the tank is full even if the cap is off because the fuel level in the tank is higher than the fuel line outlet under the hood.

I had mine plugged after I removed the engine and I accidently knocked the plug off the end of the fuel line. I dumped about 1/2 gallon of fuel on the ground (and all over me) before I could recover the plug and put it back on. It ran like a water faucet.

My recommendation is to drain the oil and refill before you fire it up.
Old 06-02-2008, 04:16 PM
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schrade
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Originally Posted by Z51L9889

My recommendation is to drain the oil and refill before you fire it up.
Absolutely. The smell was too strong to try it. I drained the oil, and it reeked.

Headed to the store for cheap oil now............
Old 06-02-2008, 04:21 PM
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65Z01
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TAKE THE GAS CAP OFF WHEN YOU DISCONNECT THE LINES.
I do that and still with >1/2 tank she'll ozz fuel so I use a section of hose to route the two lines to each other and clamp each end.

You might want to do a fill with cheap oil, run it for a short, drain and refill with synthetic.
Old 06-02-2008, 05:20 PM
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Originally Posted by 65Z01
:

You might want to do a fill with cheap oil, run it for a short, drain and refill with synthetic.
That's exactly what I did - fill it with house brand oil to fire it, and run it for a few and check for loose ends.
Old 06-02-2008, 06:16 PM
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That is one of the reasons I said you do not have to disconnect the gas lines to do this. Pull the rails and turn them upside down on the surge tank. You can do as you please with the injectors at that point and I had no gas coming out of the rails. My take on these cars is never do anything you do not absolutely need to do. You may find yourself needing something that broke on the R&R that is no longer available or at the least easily available.

Always open the gas cap before any injector service to release pressure.

Last edited by Redeasysport; 06-02-2008 at 06:19 PM.
Old 06-02-2008, 08:27 PM
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Z51L9889
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Originally Posted by 65Z01
I do that and still with >1/2 tank she'll ozz fuel so I use a section of hose to route the two lines to each other and clamp each end.

You might want to do a fill with cheap oil, run it for a short, drain and refill with synthetic.
That's what I did after I knocked off the vacuum cap I was using previously.
Old 06-02-2008, 08:34 PM
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Nothing like taking a whiff of you dipstick.

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