Dodge Caliber Forum banner

Valve tapping or am I going crazy?

4.2K views 11 replies 4 participants last post by  srtfloored  
#1 ·
hey this is my first turbo car and actually my first high performance car. i have an 08 srt4. was wondering if the valves are a little louder in these cars when your just sitting in neutral or at a light. ive had the car for about two months now. the oil looks like it could be changed. so that could be the issue there but its at a safe level.

just wondering if anyone has any opinions or advice for me. thanks !
 
#2 ·
Could be the oil isn't synthetic, or a Fram oil filter is being used. Could also be the noise that a bad alternator makes.
 
#3 ·
If you don't know how old the oil is, you should change it, so you have a baseline to go from. Check your owner's manual, but I believe the SRT takes 0w20 or something. This oil could be hard to get, so a previous owner may have had the wrong oil put in due to unavailability of the correct type.
 
#4 ·
ok cool thanks alot guys. seems like i should def do an oil change first. also is synthetic recommened by dodge for there srt4 models? i was at a local dodge dealer not the one i bought the car from recently and they had a pennzoil ultra or something that was made specifically for the srt.

ill check the alternator and see if its running right.

thanks alot guys for the advice.
 
#5 · (Edited)
"The manufacturer recommends the use of a full synthetic
engine oil, such as Mobil 1 SAE 0W-40 or equivalent.
"

This is a quote directly from the SRT4 manual.
If you don't have a copy of the owner's manual, go to our manuals section for more detail.

Another point: Sometimes fuel injectors can click pretty loud, and their "timing" could make them sound like a valve tap. Might want to dump a bottle of "Techron" fuel system cleaner into the gas tank at your next fill-up.
 
#6 ·
I use Mobil One in my Chevy and it's not even a turbo. I wouldn't put Pennzoil in my lawn mower, but that's my personal choice. How many miles are on your Caliber? If it's a lot, you might add a couple of ounces of Seafoam to the oil before you change it and see if that helps your "valve noise".
 
#9 ·
You're also around the mileage that a lot of folks have had trouble with the alternator decoupler pulley going bad. Maybe you're hearing the first sounds of that sucker going out. Do a search hear and you'll find several videos of that. You can also fashion a cheap stethoscope with a funnel and piece of heater hose. Attach the hose to the funnel, put the hose on the alternator with it running and put the funnel up to your ear. If it's knocking or tapping, the funnel will amplify the noise. Just be careful not to let the hose get into the drive belt!
 
#10 ·
You're also around the mileage that a lot of folks have had trouble with the alternator decoupler pulley going bad. Maybe you're hearing the first sounds of that sucker going out. Do a search hear and you'll find several videos of that. You can also fashion a cheap stethoscope with a funnel and piece of heater hose. Attach the hose to the funnel, put the hose on the alternator with it running and put the funnel up to your ear. If it's knocking or tapping, the funnel will amplify the noise. Just be careful not to let the hose get into the drive belt![/QUOTE

good idea! guy at my work prob has something like that we call him mcgyuver haha. i havent heard the tapping in a few days now but its possible that its starting to go
 
#11 ·
I doubt that it's a valve, since you haven't noticed it in a few days. Valves don't just "start to go" and then quiet down. They get progressively worse if one is burnt. Maybe put a couple of ounces of Seafoam in the crankcase, drive it a day or two and then do an oil change with a good synthetic you like and a QUALITY oil filter.