Paul.Ebach

Hello I am new to the forum. I have a 1969 Corvette Convertable tri Black 4 speed 350/300 all original. Sorry no pics on this site yet. The other day the wife and I were driving it home after getting ice cream and I decided to get on it. Well she took right off and after a short time she just nosed down and lost power. I backed off the gas and she crused fine. Stomped on her again and same thing. I am not new to cars so to me this acts like a gas filter not letting enough gas in under heavy foot conditions. After the small bowl area is empty she nose dives. I went to check the filter on the carb but found out there was not one there. So now whats left is the more expensive one around 50.00. The only other thing I can think of is the pump not being able to keep up. Am I going in the right direction or is the corvette a different animal with an issue like this?
Thanks for the time
Paul

Easy Mike

Original 69 fuel filters were metal and attached to the AIR pump. There may be an additional filter in the carb fitting.

When was the last time the car was tuned? Q-Jet rebuilt?

Paul.Ebach

Yes I understand this about the filter being metal. That one with the proper markings cost 54.00. There should be another one in the Q-jet but was missing 2.99. I just did a tune and runs great. Can not tell you the last time the q-jet was rebuilt but it was done durring the frame off resto.

LeMans Pete

Hi Paul,

You should only have 1 fuel filter, and for '69 it was only the metal-housing external fuel filter. Redundant filters could give you an excess pressure drop and could potentially cause the same problem you have now!

Stick with the correct external filter. It is pricey, but it also has the fuel return line off the top as well.

Paul.Ebach

What about this filterhttp://www.ecklerscorvette.com/corve...1968-1975.html
This is why I said the 2 filters.

LeMans Pete

I do believe it came from the factory with two filters as the q-jets would have come from Rochester with the filter installed - St. Louis would have just threaded the line into it.

But, you can operate it without the filter in the carb without issue, but for configuration purposes you need that external filter. Or, you can plumb the lines yourself.

Paul.Ebach

I just want it to be correct with the correct filter or filiters. I have no problem with the external filter and I will have it by this weekend. Will it show in the manual if the car came with 1 or 2 filters?

LeMans Pete

Since the filter in the carb was installed before it arrived at the assembly plant, you will only see the assembly of the external filter.

Correct from the factory will be both filters installed. Someone like Lars recommends only installing one filter.

Paul.Ebach

Thank you very much LeMans Pete you have been very helpful and sorry I ask too many questions.
Thanks for your time
Paul

LeMans Pete

Questions are always welcome Paul! Looks like a gorgeous car.

Paul.Ebach

Thank you