Im sure some of you know I have 2.4 99 cavy, just yesterday she developed a clicking sound in the engine, I was thinking a sticky lifter so decided today to use some SEAFOAM, only to have 0 smoke come out the exhaust or anything. The clicking seems to be upper-end noise coming from number 1 or 2 lifter on the exhaust side, now where it gets funny is......
1) bring up RPM, the clicking goes away, or you do not hear it
2) turn steering wheel left or right, noise goes away, unless you stop
3) I removed the belt to see if was one of the pullies ( as in bearing, dirty or debris found instide......clicking still there)
4)no noise coming from timing chain or in the block
5)constant oil changes at 4-5000 km
6)came "out of the blue"
7) belt is in good shape
8)all injectors running as they should
9)no metal shavings or anything in the oil
Only thing I can think of now(which hope is not), is a colapsed lifter as km on the engine pretty high, but she is running great, no hesitate, no different vibes, nothing just that damn clicking
"As I lay rubber down the street, I pray for traction I can keep, but if I spin and begin to slide, please dear God protect my ride." -Amen
Other than the steering wheel thing it sounds like what I had. Pray that it isn't what I had.
The thread is here:
tick
There is a video of the sound in the thread. I still haven't looked at the engine to see exactly what happened
wrong but a rod was broken in two and it punched two holes in the block, you can see right through the other side.
As far as Seafoam... if you run it in your crank case (which you would do to help free a sticky lifter or to free up gunk in there).. you would not see any smoke come from the tail pipe. It is generally recomended to run it in the engine oil for a short period of time before an oil change. Some even say just let it idle before the oil change & not to drive it (specifically revving it much)... Seafoam swears it's safe to run long term in the oil - so use at your own discretion. However, if you want it to smoke - you run it through the intake system - then it will go through the combustion chambers & that is how it will smoke through the exhaust system..
As far as the tick - Id guess it's the timing chain/tensioner or the lifters... but It's hard to diagnose a sound without hearing it. Specifically on an engine I haven't worked with in particular, so maybe someone else will be better help.
TIMING CHAIN GUIDE AND BALANCE SHAFT GUIDES Just dropped my pan to find shrapnel in the pan. Here's the scenario. Car still goes 0-60 in 7 seconds, still gets 25/35 mpg, sounds awesome, ExCEPT for the clicking. SOmetimes the clicking would go away after dropping in to low idle, sometimes it would take driving and getting the rpms up to 4 or 5000. Then the noise didnt go away for 300 miles, then it did as i was pulling into my buddies driveway to fix it. 4 weeks later, sound is back. Ran 7 quarts of oil throught it for a day, not a good idea but after 171000 miles, my car needs a good excuse to die. Noise never went away. Decided to drain oil, stuck a pipe cleaner in the drain plug hole, heard something moving around. Dropped the pan, found pieces of the right side chain guide for my balance shafts and metal flake EVERYWHERE! pulled the valve cover, the side engine cover/timing chain cover. both chains connected, looked good actually, but the bolt that holds onthe guide, was seared off and broken in the block, YAY, and 7 links of slack on the balance shaft, but still ran like a top, now im in the middle of fixin it, pulling the motor in the next couple days. Good luck, let me know what ya find out. jdoginc@hotmail.com if ya dont mind
J
