Hi guys,
I'm hoping someone can advise me how to cure a problem I've had recently. Last weekend I was driving my 68 Iso Grifo (454 BBC engine) home from the Silverstone Classic in the UK. I'd been sitting on about 80mph for about 45 mins on the freeway, when I felt the engine jerk a couple of times. It happened again a couple more times, then the motor cut completely and I pulled over. There was no fuel visible in the glass filter on the fuel line and no pressure at all on the gauge just before the Holley carb. I could hear the fuel pump (Holley 125 electric) was working when I switched on the ignition. When things cooled down a bit, I tried again, fuel gushed back into the carb and she started right up again. When I got home and had been in traffic for a while I looked again under the hood and saw that there was very low fuel pressure and the glass filter was only partly full, so I'm sure the motor would have quit again fairly soon.

I guess this is a vapor lock situation - what should I do? I suppose the fuel line from the tank must run too close to the exhaust somewhere. The pump is back near the tank, so if the problem is between the pump and engine, why doesn't the pump just push more fuel through? I guess the way to go is to lag the whole fuel line with heat insulating sleeving? Any recommendations on products? Should I wrap up the pump in heat shielding too?

Your thoughts would be appreciated!

Thanks,
Chris