Have a 1999 v6 Honda Accord .... I just replaced both cam front seals .. I put everything back together and now it bairly wants to stay on and I hear valves clacking , I thought maybe after 10 sec it would go away but no so I shut it off . I looked to see if maybe timing was off but it's all lining up right . I did spray some brake cleaner around the cam seals to put the new seals in and still has uv dye but I highly doubt that could be the problem . Any advice guys pls thank you .. No engine light on either video here...

I did do valve adjustments but this was 2 days ago and it ran very strong , no issues and then I tore it down to do the cam seals ....

Can a bad cam sensor cause this ?
While taking off cam sprocket I think I hit both cam sensors and dented one pretty good



When I was first trying to take the pulley off I tried using the 3/8 drive with a hammer to torque it out and the front pulley would move left a lot ... After putting it all back together I made sure to put it back on the timing marks

 

Yep that would do it. It's likely it's throwing a code now. Scan for codes.

 

So I put a new cam sensor .. No engine light .. Still knocking and misfiring like crazy

 

Have you scanned for codes yet ?