Gas odor: Check the breather hose on the top of the gas tank. You can see it if
you pull the
inspection plate in the trunk. This is the hose that vents the tank up through
the trunk floor next
to the filler hose. There's a metal fitting on the trunk floor, a rubber hose
up to the filler neck
a rubber hose between the tank and the trunk floor fitting. You could also be
leaking gas from
around the gas gauge sending unit.
Compression: 210-220 is pretty darn high. That's probably contributing to the
pinging. Are you
running a stock cam? What are your valves set at?
Stephan Sochoux wrote:
> Hello all,
>
> I have a few items i'd like to fix before Shasta...
>
> - very strong gas smell while driving, especially when
> coming to a rest. It seems to come and go. It's almost
> like a diesel sort of odor. I cannot find a leak
> anywhere. During last weekend's bbq run, some say they
> could smell it while cruising behind me.
> The carbs are running a little rich but were verified
> to be correct with Dan's Colortune. The plugs have a
> nice tan color. I'm puzzled.
>
> - the distributor housing where the tach connects has
> sprung a leak. Is this an indication of excessive
> crankcase pressure ? The air filter's backside gets
> oily (black) yet the engine oil is 350 miles fresh.
>
> The timing is set to 10 BTDC, otherwise it pings due
> to the high compression (domed pistons). Dry
> compression test is 210,220,215,215 - for each
> cylinder test, i let it sit one minute to see if the
> compression would drop, nothing really, 5 lbs at most
> on one cylinder. I wasn't expecting such high numbers.
> With these readings, is it gonna blow up on me ?? I
> must say that it pulls hard... it wants to open up but
> i think the SUs will be the limitation. Haven't pushed
> it passed 4.5K
> The idle is very smooth at 600rpm, it doesn't skip a
> beat and it shuts off without dieseling.
> I'm really concerned about the strong gas odor, any
> ideas appreciated. Tomorrow i'll change the oil, maybe
> gas is leaking into it ?
>
> Thanks,
> Stephan
> '69 2000
>
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--
Gordon Glasgow
http://www.gordon-glasgow.org
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