Vapor-Lock, Percolation, and LL100 Revisited

[Marlin F.]

Well, despite my high hopes pinned on LL100's superior fuel characteristics, the L79 continues to sputter and buck down the road after blending the av-gas with the non-ethanol premium pump gas at the rate of 50/50. It was about 96* here yesterday and I had to suffer the indignity of 4 different 'rest stops' on the way to the airport to collect the fuel and a similar number of stops on the way home with the 'magic' blend in the tank. $5.29 a gallon, by the way!

Thanks to all for additional thoughts on remedies beyond my short-sighted view of things. I'm just stubborn enough to believe that people didn't stop driving their cars in hot weather back in 1966, and I won't rest until I get this thing licked! A wise man once told me, "It's nothing money can't fix!"

[Jerry B.]

Re: Vapor-Lock, Percolation, and LL100 Revisited

I agree. I remember sitting for hours in traffic on my way to the beach even with the ac on. NO overheating problems. Back in the day, I used 93 Amoco and if I just got paid, I treated the old 64 GTO to Sunoco 260. At that time, I could not afford a Corvette.

[Timothy B.]

Re: Vapor-Lock, Percolation, and LL100 Revisited

Marlin,

If you have a spare ignition coil swap it out just to try..

[Michael W.]

Re: Vapor-Lock, Percolation, and LL100 Revisited

Possibly blocked gas cap vent, weak fuel pump, clogged filter/sock or all the usual suspects on the ignition side. Next time it quits, check right away if you're lacking spark or gas.

[George J.]

Re: Vapor-Lock, Percolation, and LL100 Revisited

Yes, there is definitely something else going on here.

George