Heli coil
#1
Heli coil
Ihave a 2006 hhr 2.4 litre engine and the number 2 spark plug , the little metal pin on the bottom broke off . Had to bore new threads and add a heli coil.
worked for about a year then #2 cylinder spark plug did the same thing .
Is this a common problem
worked for about a year then #2 cylinder spark plug did the same thing .
Is this a common problem
#7
Or maybe you weren't changing them, maybe you were doing a compression or some other test.
#9
sorry
I had the hhr for about 7 months and was planning a trip back to ontario.
no issues for 7 months and then 2 hours into my journey started running on 3 cyls
took to the closest chev dealer with a garage and they said the spark plug was loose and vibrating , i assume the vibration some caused the electrode to dislodge , fall off .
had trouble getting the plug out so had to make the plug hole larger and add a Heli Coil.
was fine for about a year , took my daughter to university then came home and parked.
time to pick her up and when it started the same noise and symptoms were there again .
put it on scope and misfire # 2 coil
I had the hhr for about 7 months and was planning a trip back to ontario.
no issues for 7 months and then 2 hours into my journey started running on 3 cyls
took to the closest chev dealer with a garage and they said the spark plug was loose and vibrating , i assume the vibration some caused the electrode to dislodge , fall off .
had trouble getting the plug out so had to make the plug hole larger and add a Heli Coil.
was fine for about a year , took my daughter to university then came home and parked.
time to pick her up and when it started the same noise and symptoms were there again .
put it on scope and misfire # 2 coil
#10
I have never changed the plugs the mechanic has though .
I think this is one of those Murphy things
so i cannot bore another hole so I will replace the head
I am not a mechanic but i think that is the proper course of action
I think this is one of those Murphy things
so i cannot bore another hole so I will replace the head
I am not a mechanic but i think that is the proper course of action