The engine cuts out above 4,000 rpm when being pushed hard Options

[shag]

When the engine is just cruising along and I am in no hurry the car runs fine. When I have the accelerator floored and am taking the engine to the maximum rpm's it begins to cut out at approximately 4,000 rpm. This had happened twice before and I changed the fuel filter, which was extremely clogged, and that fixed the problem. This past winter I removed the fuel tank and had it cleaned out and coated with some kind of reddish substance that seemed great. When I replaced the fuel tank I installed a tubular screen about 4 inches long inside the tank, a new fuel filter between the fuel tank and the fuel pump and replaced the original fuel filter which is near the right rear wheel. I thought I had done more than enough to prevent this from happening again especially since I am preparing the car for Octeenerfest. Wrong again! The car started cutting out again at high rpm's just like before. This time I took the car to Derrick Sweger, who worked for Steve Lindell for many years and has rightfully inherited his business, though is not operating yet was kind enough to lend me a hand. He replace the filter near the rear wheel and then he started on the front filter. The filter on the front was a style that has the clear plastic body around the paper like insides and it looked like it did when I installed it. It was the fuel line that had a sharp bend in it that we thought was causing the problem. Derrick had a 90 degree piece of tubing that took care of the problem. He told me to call him with the results. Approximitely 3 miles down the road I floored the pedal and the exact same problem prevailed. So now I would like to certainly have this fixed before Octeenerfest. What do you guys think is the problem?

[shag]

Gentlemen, this morning I was talking to a friend about the problem I was having with the 914 and I became confident that the problem was with the fuel supply. The problem I am having was identical to the problems I was having with the filters, not getting enough fuel. So I started out removing the cover that shields the fuel pump and master cylinder for the brakes to check out the fuel pump lines.
They all looked good! This is where I thought the problem was. I then turned off the big bright shop light and turned on my little phone light to peer up into the hole where the fuel lines come down from the fuel tank and there it was, a kink in the fuel line just before the filter which was installed when I installed the tank. I ty-wrapped the filter to a bolt to keep it from kinking the line and it worked. Drove the car around for about 45 minutes and it ran great. Parked the car at home had supper then took the 914 for a little drive again and it had problems accelerating again but it was different though. The car was missing but in a different way! I will check it out tomorrow and let you know.