Hi i recently had an issue with my 182 completely dead and refusing to start with some knocking in the head. My hydraulic lifters were dead. Long story short I replaced all of the hydraulic lifters and cam followers just for good measure. The camshaft was still in good condition and everything else seemed to be good (Lucky me). after I refitted everything I did a compression test to make sure and I was getting around 185 +/-5psi dry on all four cylinders which is pretty healthy. started her up no issues with ticking on idle ran smoothy no weird noises at idle.
I took it for a spin and it started making a ticking noise only above 1600rpm as soon as the rpm drops below that the ticking stops. I assumed it was just noisy lifters as they were new, so I let them run in for a short period of time, and the noise didn't change. I know this could potentially be a dephaser pulley issue as it engages around that rpm. So just for good measure, I decided to disconnect the vvt solenoid just a shot in the dark to see if it would do anything. Low and behold the noise disappeared. no ticking/knocking on idle and no noises under load at all.
I removed the solenoid clean it with carb cleaner and test it. The ticking noise that I heard was very similar to the solenoid engaging and disengaging very fast. I checked for shorts to the ground with a multimeter it seemed okay. but what I did observe is that I was getting very wild resistance readings when testing. I can't find any official figures on the VVT solenoid specifications but from what I assume from other solenoids is the specification should be between 8ohms and 12ohms.
My test results were
4.1ohms at room temp
19 ohms after I tested it a few times to clean it
59 ohms when warm
Can anyone point me in the right direction or not? What are your thoughts is it the solenoid or pulley
Thanks
I took it for a spin and it started making a ticking noise only above 1600rpm as soon as the rpm drops below that the ticking stops. I assumed it was just noisy lifters as they were new, so I let them run in for a short period of time, and the noise didn't change. I know this could potentially be a dephaser pulley issue as it engages around that rpm. So just for good measure, I decided to disconnect the vvt solenoid just a shot in the dark to see if it would do anything. Low and behold the noise disappeared. no ticking/knocking on idle and no noises under load at all.
I removed the solenoid clean it with carb cleaner and test it. The ticking noise that I heard was very similar to the solenoid engaging and disengaging very fast. I checked for shorts to the ground with a multimeter it seemed okay. but what I did observe is that I was getting very wild resistance readings when testing. I can't find any official figures on the VVT solenoid specifications but from what I assume from other solenoids is the specification should be between 8ohms and 12ohms.
My test results were
4.1ohms at room temp
19 ohms after I tested it a few times to clean it
59 ohms when warm
Can anyone point me in the right direction or not? What are your thoughts is it the solenoid or pulley
Thanks
