Hesistation/strudder in higher rpm range under harder throttle

[Jackson1106]

Hello,

 

Looking for some help with a hesitation I am having with my 2003 Nissan stagea 250trs with a VQ25DET. It starts to hesitate under harder acceleration over 3000rpm. the power seems to cut in and out above that rpm range under load. No intake or exhaust leaks(smoke tested) and no check engine lights or codes. I will attach a video of my issue. Maybe someone has experienced this before? It is super annoying when I'm trying to merge and the power cuts in and out. It feels like misfiring but I have no check engine light. I put in brand new plugs back 3 months ago, this is a new issue within the last month.

 

Thanks again for your help in advance.

[GTSBoy]

Well the video refused to play smoothly for me, so that wasn't helpful.

It is probably missing. No CEL is present doesn't mean that it's not missing.

Could still be ignition. Could be weak fuel pressure. Could be noisy CAS signal.

[sonicii]

problems like that under heavy load is often spark related, either plugs or coil packs.  As above, the lack of a CEL doesn't always mean all is healthy on the ignition front.