LT1 lopey/rough idle - is this normal?
06-18-2016, 10:55 PM
#16
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Join Date: Jun 2016
Location: Edmonton, AB, Canada
Posts: 43
Re: LT1 lopey/rough idle - is this normal?
The description of the problem seems a bit contradictory.... "at idle it seems a bit lopey/rough" vs. "I don't know if you can even hear it, it is so slight". I minor misfire, not on a regular pattern would seem like the most likely cause of the "I don't know if you can even hear it, it is so slight" issue. Marginally dirty/leaking injector, bad valve, faulty plug or plug wire.
When I bought it it didn't concern me as I previously owned a 2002 SS and it did have a bit of a rough idle which I believe was due to the factory cam. So I assumed the LT1 had one too. The car runs perfect, doesn't stumble, pulls hard with no missing so it didn't raise flags. When I am sitting still such as at a red light is when I notice it.
I appreciate the pointers from everyone and it is a good base for me to start. Once this tank of gas is nearly gone I am going to start with injector cleaner and go from there.
01-27-2021, 10:50 PM
#18
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Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 70,650
Re: LT1 lopey/rough idle - is this normal?
“deebee” hasn’t signed into this site in 4-1/2 years.
Might want to start a new thread, including specifics of your car - year, trans, miles, any significant engine mods. Not all years of the LT1 are identical.
Might want to start a new thread, including specifics of your car - year, trans, miles, any significant engine mods. Not all years of the LT1 are identical.
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