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Pierre: What model Ferrari do you have? Different models used different pressure caps.

Drew: If the engine will run on the choke circuit, then the carbs are getting fuel. Don't assume the carbs are OK. When something is wrong, always first go back to what you did last.

Andrew: The car will fun fine on the electric pump, 3 psi is plenty of pressure for the Weber carburetors. I seriously doubt the cam that drives the pushrod is worn ( I have never seen one wear measurably). I will let Tom address your other questions.

Don't forget, we are back to the boiling point of todays gasoline. These fuel systems were designed for fuels with a much higher boiling point.

Andrew: The electric pump is operating correctly.

Steve; There are no relays in GTC electric pump wiring from the factory. you either had a switch failure or lost power to the switch itself. Check the fuse and make sure it is not corroded.

Steve: Good to see you back on the forum and hope your health is good. Opinions are like armpits, everybody's got them. So here are a few observations: 1. We have had ethanol (E10) fuels in everything from Duesenbergs to the newest cars for over 25 years now with ZERO problems. The cars always start...

Sold my GTC years ago, but looks plausible. The hole should provide a reasonably straight "pull" for the spring as the pedal is pushed in. The spring acts as an over-center assist.

There is a horizontal hole in the dash panel above the pedals where the "adjuster #34,35 goes through the panel. Look for the "adjuster", it might still be there. All the cars had them. Lots have broken the springs by now. A real PITA to install, takes lots of pressure to stretch the spring.

John: Another person just asked the same question on Ferrari Chat. If the seals are not leaking too much, 140 wt is fine. I have used 250 wt also and it will work without any problems. I would not recommend 85/140, as it will seep out much easier. Generally, if you can see oil is covering all the in...

Tom: I have never known a correctly tuned "factory built" six carb car to be either hard starting or to foul spark plugs. Without a doubt, many later private conversions are not set up correctly and can have problems.

Six carbs produce 20-25 more bhp. Three carbs produce slightly more torque at lower rpm.

Jim: Only the later cars have the return lines. They start to appear in the 8000 number range.

Peter: Sorry, but forgot to tell you it also adds 50 bhp and 25 mph to the top speed, as well as doubling the gas mileage!! Like others I have not seen any benefits to using MMO in modern cars. Very interesting comment about lubricating the throttle shafts. I tend to agree with your thoughts.

Peter: You raised some good points, so let me try to clarify them: 1. 250 GTO's do not use the FISPA mechanical or electric pump. They have two of the Bendix electrics. I think Ferrari found the Bendix pumps were superior to the FISPA electric units. Primarily their "points" systems are much more re...