My Engine has silent "Burp" that I feel at idle. At any driving speed the motor is "Smooth as Silk."What si going on???

[Steve Lee]

Lately at idle I feel a little silent "burp." At any driving speed the motor is not missing and "Smoooth as Silk" and it only does it sometimes! What can that burp be??

 

[JohnnyBfromPeoria]

I'd scan it for codes first. Could be a ton of stuff. Might not set a code that a regular OBD-II scanner would pick up unless it's a misfire, but you can rent a Tech 2 scanner and Candi interface online if you do a search. It can dive a lot deeper. Mine ran better after I replaced the coils, but that was pretty obvious because one of them wasn't firing the plug at all. I replaced all eight.

John B.

 

[Steve Lee]

I'd scan it for codes first. Could be a ton of stuff. Might not set a code that a regular OBD-II scanner would pick up unless it's a misfire, but you can rent a Tech 2 scanner and Candi interface online if you do a search. It can dive a lot deeper. Mine ran better after I replaced the coils, but that was pretty obvious because one of them wasn't firing the plug at all. I replaced all eight.

John B.

I'd scan it for codes first. Could be a ton of stuff. Might not set a code that a regular OBD-II scanner would pick up unless it's a misfire, but you can rent a Tech 2 scanner and Candi interface online if you do a search. It can dive a lot deeper. Mine ran better after I replaced the coils, but that was pretty obvious because one of them wasn't firing the plug at all. I replaced all eight.

John B.

 

[Steve Lee]

Some days it does it a little, and some not. It never happens at normal driving speeds; only at idle??

 

[JohnnyBfromPeoria]

When was the last time you replaced the spark plugs?

John B.