Found this on the intake

[Jeff Y.]

Found this sitting on the intake, did it come from here on the carb? Look at the photos.

If it did, how do I put it back? The car seemed to be running rough and missing at 4k rpm when accelerating hard. Could this have been messing up my mixture?

thanks

Jeff
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[Edward J.]

Re: Found this on the intake

Jeff, It appears to be a block off plug, maybe somewhere there is a vacuum leak, this will cause the car to idle rough. I am not sure of the position, maybe if you start the car you'll hear a hissing noise, if so find the source and put your finger over it and you'll feel a slight vacuum. then you found the source of the leak. In your second pic there appears what looks like a open port above the small black hose on the right??

[Jeff Y.]

Re: Found this on the intake

That open port on the carb is just to the right of the PVC hose. I'm thinking that's where it came from. Oh, now I see the spot you're talking about. I think that is a screw hole.

[Bob H.]

Re: Found this on the intake

Looks like that is where it is from. If you feel vaccum there and decide that is where its from, I would use some epoxy when putting it back in to insure there is not an ongoing leak created.

[Alan S.]

Re: Found this on the intake

Hi Jeff,
Perhaps here?
Left side, upper, rear.
Regards,
Alan

[Jeff Y.]

Re: Found this on the intake

Alan, yup, that's it. Seemed strange that I didn't have an idle issue. Now I have to work on my timing. I think it's getting too much advance. I backed my initial down and it does not run as rough as before at higher revs.

[Alan S.]

Re: Found this on the intake

Hi Jeff,
Good!
Drive on!
Regards,
Alan