So I have noticed a ticking sound coming from the engine. It started about a week ago. Its doesnt sound like knocking which would be the worst case scenario. I was wondering if it could be a timing belt or pulley bearing?
This...Seems to really vary manufacturer to manufacturer with these high pressure fuel pumps... for example...Which model year?
On the 1st gens- there is an audible tick- from the high pressure fuel pump and its related part. Very noticeable at idle. Especially of you open up the hood.
2nd gen.. I dont know- have not heard one up close.
Just curious if the ticking sound went away after you replaced the purge solenoid?I have the same sound, I assume. I wish we could upload sounds to the forum. I took a recording of it today when I was in replacing my evap/purge solenoid. My sound clicks about 17-18 times in 10 sec
2011 Traverse LS
HAHA - That's my video!!!! Yes - replacing the purge solenoid got rid of the loud ticking, but the HP fuel pump does make normal ticking as well on these cars.