Replaced DOD Lifters and now I have a small miss at IDLE - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

wcarbo · 02-22-2019, 02:11 PM

Ok I had a DOD lifter go out on MY 2011 Camaro 2SS .It was number 1 it was collapsed .I drove it 4 blocks with it taping .Appeared no other damage when taking down .Decided to do top end rebuild ,sent heads to shop just because .Bought new Milan lifters all 16 8 dod and 8 regular new gaskets(full set Felpro with 3 piece metal for heads ) new spark plugs wires oil and filter , air filter And also new DOD plate updated version from dealer . Rebuild went fine. But after the job I'm chasing a small miss every now and then at idle . Car is all factory never been worked on 135k miles nothing has been changed I am original owner and kept it stock. I have been trying to figure this one out for about two weeks ..I brought it to a shop that I know the owner and tech very well and they did every test they could think of. what their snap on reader is saying is their is a miss on Number 1,4,6 They are saying that the lifters are bad ..That if they had to try and fix the problem that's where they would start and they would change cam ..I never changed cam it appeared to be fine and the lifter rollers where free and turning ... Ill add more as people ask questions .. The car runs beautiful except sometimes at idle it has a little miss . check engine light is NOT on. they smoked tested intake checked fuel pressure engine compression oil pressure with filter removed .The list gos on ... What is wrong with DOD system ..AS you notice the cyclinders that are missing are 3 of the for Dod lifter sets....Thanks Wayne

Rock-It Man · 02-22-2019, 03:54 PM

First guess: maybe DOD lifters went into wrong holes?

wcarbo · 02-22-2019, 04:12 PM

99.9 % sure they are in right holes. They go in to the plastic trays ( that I replaced with new ones from dealership) . I know for sure the ones in number one are the DOD lifters because that is where the collapsed one was .And I inspected it ... They do not tap are make any noise and I did old school and ran oil in lifter and through pushrods.Thanks

gringo · 02-24-2019, 08:12 PM

Did you measure the lifter bore on the number one cylinder that collasped?

02-22-2019, 02:11 PM	#1
wcarbo Drives: inferno orange 2ss Join Date: Mar 2011 Location: Barataria Posts: 5	Replaced DOD Lifters and now I have a small miss at IDLE Ok I had a DOD lifter go out on MY 2011 Camaro 2SS .It was number 1 it was collapsed .I drove it 4 blocks with it taping .Appeared no other damage when taking down .Decided to do top end rebuild ,sent heads to shop just because .Bought new Milan lifters all 16 8 dod and 8 regular new gaskets(full set Felpro with 3 piece metal for heads ) new spark plugs wires oil and filter , air filter And also new DOD plate updated version from dealer . Rebuild went fine. But after the job I'm chasing a small miss every now and then at idle . Car is all factory never been worked on 135k miles nothing has been changed I am original owner and kept it stock. I have been trying to figure this one out for about two weeks ..I brought it to a shop that I know the owner and tech very well and they did every test they could think of. what their snap on reader is saying is their is a miss on Number 1,4,6 They are saying that the lifters are bad ..That if they had to try and fix the problem that's where they would start and they would change cam ..I never changed cam it appeared to be fine and the lifter rollers where free and turning ... Ill add more as people ask questions .. The car runs beautiful except sometimes at idle it has a little miss . check engine light is NOT on. they smoked tested intake checked fuel pressure engine compression oil pressure with filter removed .The list gos on ... What is wrong with DOD system ..AS you notice the cyclinders that are missing are 3 of the for Dod lifter sets....Thanks Wayne

02-22-2019, 03:54 PM	#2
Rock-It Man 376 cubic inches of fun Drives: 2023 Camaro ZL1 A10 Join Date: Jul 2010 Location: MA Posts: 4,033 View My Garage	First guess: maybe DOD lifters went into wrong holes?

02-22-2019, 04:12 PM	#3
wcarbo Drives: inferno orange 2ss Join Date: Mar 2011 Location: Barataria Posts: 5	99.9 % sure they are in right holes. They go in to the plastic trays ( that I replaced with new ones from dealership) . I know for sure the ones in number one are the DOD lifters because that is where the collapsed one was .And I inspected it ... They do not tap are make any noise and I did old school and ran oil in lifter and through pushrods.Thanks

02-24-2019, 08:12 PM	#4
gringo Account Suspended Drives: Camaro V6 Join Date: Oct 2016 Location: U.S. Posts: 1,722	Did you measure the lifter bore on the number one cylinder that collasped?