[RazorRacer]

After cranking with full throttle, the 79SC engine will run only on one cylinder as long as the pedal is too the metal???

Is this a symptom of a bad fuel pump check valve? What would allow the car to run on one cylinder at full throttle, but not fire the other five?

Notes:
1. This is an intermittent problem and only then do I crank with full throttle.
2. Car will run fine once fired up. About 1/2 of the time it fires right up.
3. The car will not run AT ALL with the fuel pump relay removed.
4. Vacuum system is fine because the pop off valve cannot be opened when cranking or running.
5. When running at idle, there is a loud sucking noise that can be heard when the air filter is removed.
6. Sometimes when running the car will stall and cannot be restarted.
7. Every wire from the CIS box to the engine has been checked by the highly effective means of vigorous shaking.
8. I smell gas when cranking.

This is my sons car and I am driving it so he won't stall out. Responses today will be helpful as I am leaving town and he will be without a ride for the weekend. I plan on changing the fuel pump this evening.