Misfire no codes

I am getting misfire when I am idling In drive and reverse
Only get it a few times in park. When I am driving at 70 and drop my acceleration then pick it back up as soon. As it hits 1800 1900 rpms it starts misfiring alot then goes away when stomp on the gas. I am at a loss with no codes being thrown

 

Do you have a scanner to see what your fuel trims are? What bank and cylinders are involved? Could be bad coolant sensor, vacuum leak, plugs...

 

No I do not I will have it hopefully scanned on Tuesday don't have access to a fancy scan tool. Only the free one at auto zone hahaha

 

Probably spark plugs. Check all of them.

 

I changed the cam shaft sensor , pcv valve , all the spark plugs , 1 coil pack that was failing on number 8 . Still no codes and running terrible cleaned the mass air flow and throttle body . I ordered a fuel pump due to the gas gauge has been not correct for a long time. Running out of ideas

 

Did you buy the plugs and coil from a reputable source. I got bad plugs off Amazon once. Even though they are pre gapped,always double check.

 

Check the ground at the battery. Make sure that bolt on the fender is tight.

 

I bought denso iridium from oriellys. I will double check the ground connection. It all happend at total random I drove it towing the boat ran like a champ went to work for a week the drove 1 hour in bumper to bumper gridlock traffic and as soon as I was able to get on the gas and start moving it craps out and start sputtering and motor shaking thought I was running out of gas but still had plenty filled it up and had that problem ever since

 

How old is the coolant?

 

Coolant is probably 1 yr, I do have 348,000 miles but has been strong, pulls boat no problem pulls toy hauler no problem . I do have a oil leak I think is coming from crank seal I have oil on the rack and pinion and going down the sides of the heads . Not enough to cause a puddle or massive loss

 

But it's been running fine with the leak for awhile now