08 Hihy 3.3l, misfires on cyl 2 & 4. Cold start mostly

[grcauto]

My problem is I don't remember after a couple days so I tend to let them go.

 

[dabunk]

You need a special adapter to check fuel pressure properly, cannot go by volume need to check actual pressure while cranking/running

 

[nickb2]

This engine has VVT, correct? That opens up a whole new bunch of possibilities for the valve timing to be off, I'm thinking live-data may be good for catching/reporting problems there, but you would probably need to log all the data for careful analysis, not just a quick look-see at a few parameters.

Dear billr , yes it is a vvt engine. So maybe one of the cams skip time, it is a timing belt maybe got off timing. IDK.

Did tech do that right, but zero comp on one bank and spot on on the other one, gives me a dang good indication where to look.

Anyway, we will see.

cheers all, gotta go.

 

[nickb2]

Forgot to mention, and this is from memory, the non hybrid v6 is chain, hybrid is belt. Easy to mess that up.

I will do a quick search to confirm, so as not to send you into weeds.

But my mind says hybrid is a belt.

I'll be back.

 

[nickb2]

Ok, my search confirms it is a timing belt. https://partsavatar.ca/2006-2008-to...MI2Ln2hsbV9wIVlBXUAR2I3AiiEAQYASABEgLX0fD_BwE

 

[nickb2]

To billr, again, from memory, vvti. Not that it makes a difference. But sometimes ppl here give greif cuz you use wrong terms, but for sure it is a variable valve timing engine.