1999 Honda Accord rough start untill given a little gas

I was going to try the fuel regulator thing you said in a couple days when I had time. Another symptom came up that may be part of it.
I hear a rattling under the car that sounds just like a heat shield on a cat convertor. I took the heat shield off and it sounds like the rattling is inside the cat convert. When I gave it gas to get it to start up (old problem) lots of smoke came out of the muffler.

Could a bad CAT convert. Cause car not to start unless I give it gas?

Thanks.

When I solve this I will send another donation

I was going to try the fuel regulator thing you said in a couple days when I had time. Another symptom came up that may be part of it.
I hear a rattling under the car that sounds just like a heat shield on a cat convertor. I took the heat shield off and it sounds like the rattling is inside the cat convert. When I gave it gas to get it to start up (old problem) lots of smoke came out of the muffler.

Could a bad CAT convert. Cause car not to start unless I give it gas?

Thanks.

When I solve this I will send another donation

PS I check heat shield under hood. The sound is in cat convert. Or the s pipe

I took the catalytic convertor off and the car started right up. I put the new cat conv. Magnaflow on and it won't start again. I thought there may be a block lower or I screwed up the CAT CONV install somehow. Only 6 bolts. So I took it off and tried starting it without the Cat Conv connected and still won't start.

Sounds like a flooded engine. It tries to turn over but just sputters.

Any thoughts?

If it is flooded do I just wait. I have waited a couple hours and nothing changed?

Could the O2 sensors cause this? No CHeck engine light on