Jackson Kemper

Engine is loud and Shaking badly for 60 to 90 seconds, only occurs at ambient temp, and is at its worst after a 15 minute drive to work and 4 hours in a hot Florida parking lot.

Occured after changing the oil filter housing and cooler gaskets and flushing and bleeding the coolant (without a charger - everyone says use a charger). I think I caused the problem because it occurred after this repair

It has to be the battery or battery component like my dme or ibs. My battery is good under load and good alternator voltage but low standing voltage around 12.3

Or I have a leaky injector?

Only codes are misfires. Tried to chase a primary misfire with new coil and no luck. Plugs are new.

Changed oil recently (under 1000k) but ran techron twice and injector cleaner through fuel so it's pretty nasty and I'm going to change after current second techron treatment.

Do you guys know where I messed up?

Also I'm doing a valve soak and scrub soon, but that can't be the heart of the issue since it occurred suddenly.

thanks in advance!

SHARKBEAM5

Hey Jackson, did you ever get to the bottom of this?

Jackson Kemper

Yes, thanks! Leaking injectors were the culprit. Very proud of my DIY.