What cause that engine noise?

[megadan]

Since i'm new with DSM, I don't really know those engine. I just bought a 95 Talon tsi AWD and the engine is doing a knocking sound. If I rev it a bit (2500rpm) the sound does NOT stop as many post I read. The sound is just faster. I though it maybe was a valve but the compression is 165 150 165 150. I also found on the windshield a oil change "vignette" (dont know in english). On it it show 162000km and the car is 180000km. Could no oil change during that time could have cause this problem: carbon or valve lifter to go bad? Im so happy to have a new car but I dont want to nmake it worst or blow the engine.

WHAT COULD IT BE PLEASE!?!

thanks

 

[flytalon93]

Sounds like it could be just lifter tick. In any case, if you are not sure when the last oil change or have thinks its over due, I would immediatley change it.

 

[megadan]

Oil change will be made tonight with mobile 1 and Lucas oil stabilizer. Also, i will try to flush the engine. Ill keep you informed.

 

[megadan]

OK so I flushed the engine, and changed oil as said later and the noise is still there. I will try to explain the problem the best I can so you can help me.


-Noise is like "tock" or a knock.
-Faster I rev worst it gets.
-Coming from the top.
-Engine vibrate.
-Went for a ride and almost no power, can't climb higher than 3000rpm

Maybe someone has already experience the same problem and has a cure.

I don't want to change parts for nothing as I am restricted in time. AFter the 26, no more garage.

Thanks

 

[blue92laser]

Well, its not coming from the top, I would say its definately bottom end, especially if it gets faster as you rev the engine. I would say its the balance shaft bearings or if not that, its rod knock for sure.

But, I dunno, I am just a mechanic.

 

[megadan]

But, I dunno, I am just a mechanic.

HAHA Maybe I would need more the help of a psychologist now.

Ok how do I get to the balance shaft bearings or I guess a spun rod bearing. I'm going to try to do the job but I nerver opened an engine before.

I don't even know what it look like. Can I get those by the oil pan?

I read a bit on the forum and heard it is better to get the balance shaft off despite the vibration. is it true?

Thanks

 

[realhp=turbo]

How thick was the oil you just put in your motor? I one time put 30 wt oil in and it acted real sluggish, no power. (I got beat by an old jeep grand cherokee) You couldve put in too thick an oil. I have that stupid DSM lifter tick too, and I found that just mobil 1 15/50 fixed my problem beautifully. If you have limited time in a garage then I wouldnt go tearin into the motor just yet. Your 95 isnt all that easy to work on cause its got a tight engine bay. A balance shaft removal requires that you take the motor completly out of the car. First things first though. You do have a Chiltons manual right? With out it you might as well try rolling a snow ball in hell. Thats about the amount of luck you'll have. Get the manual and read, read, read.
mike

 

[megadan]

I already ordered a Haynes manual from Canadien Tire. I never heard about Chiltons before. Well im in quebec so...

This is my first car like this so I don't know how it is suppose to pull but it wouldn't pass 3000rpm. It is definitively not the oil that cause that but maybe your right and my car could be more powerfull with thicker oil.

I put in it mobile 1 10w30 syntech with lucas oil stabiliser.

So your telling me that I have to pull out completly the engine to get to the balance shaft. OH MY GOD. I already made a swap in my Probe but no another one.

Really impossible to just pull out the oil pan?

 

[flytalon93]

It could probably be either a timing issue or balance shaft out of phase.

 

[megadan]

I just get the car so I dont know is background but what I know is that the motor was changed recently and the guy said (could by a lie): "I woke up one morning and the car started to do this (noise) and it grow up with time."

The timing belt was changed too.

Could a timing issue could cause the engine to do that tocking noise?

Anyway I have a timing light so tonight im going to set the timing.
Anything specific to the car I need to know before I adjust the timing? Like in my Probe it wasn't possible to adjust it without being in diagnostic mode.

Thanks

 

[flytalon93]

Timing belt was recently changed? This is the kinda info we need to help diagnose problems. You say vibrations and and will not go past 3000 rpms. Definitely symptoms of balance shaft out of phase.

 

[megadan]

Do the timing belt related to balance shaft?

Do you have any pics of it?
And how can I get to it. Pull the entire engine out?

 

[megadan]

If the balance shaft removal is too long to explain dont bother im going to search.

Prior to research for one thing in particular I just wanted to pin point the problem

 

[flytalon93]

To check the balance shaft is real simple and does not involve pulling the engine. Refer to here and pay particular attention for Figures 12c and 13.

http://vfaq.com/mods/timingbelt-1G.html

Make sure all the timing marks are lined up prior to doing this. You will probably have to do some dissembling to ensure this. The screwdriver thing works because my wife's car was like that for months and this is how I found out the shaft was out of phase.

 

[megadan]

The screwdriver thing works because my wife's car was like that for months and this is how I found out the shaft was out of phase.

When you say "like this". Do you mean like my car: tocking and not going over 3000rpm?

Ok ill read this thakns for the link

 

[flytalon93]

Well I'm not exactly sure about your "vibrations and not going over 3000rpms" but my wife's was vibrating real bad at anything above 5000 rpms. Maybe she liked it, , but I knew something was wrong. The whole car would shake and it sorda just fell on its face at mid-top end. But now, it pulls like should and its real smooth, especially since I installed my old 14b on it.

In any case, it wouldn't hurt to check if not for piece of mind but to check that off the list of possibilities.

 

[megadan]

Ok Ill try the screwdriver test tonight and give you some comeback tomorrow.

Just to know, if everything is properly aligned, what else could be my problem?

 

[Strm Trpr]

Timing belt was incorrectly replaced.
Rear balance shaft is out of phase.
Bearings are worn allowing balance shaft to knock inside the bearings.
Can't rev past 3k... Timing is off a tooth or two.
<a href = http://www.vfaq.com/FAQlocator-index.html>Learn how to use this</a>
BTW, you have a 2g, this person you bought this car from, did he say he did a 6-bolt swap or what?

I'd say get yourself some good RTV sealant and drop your oil pan to see if there are any chunks of metal in there.
I've read about some cars spitting out a balance shaft bearings, and then the shaft just spins in the bearing bore knocking the hell out of the block.

You do not need to remove the engine to pull out both balance shafts.
Well, I don't know about AWD's, but my FWD I got both BShafts out with the engine in the car.
I'm sure it can be done to either AWD or FWD, you just have to know what parts to remove in order to allow your engine to hang on the tranny mount supported by a jack under the oil pan.
I've done it, and if you want, PM me, I may be able to help.

 

[megadan]

Ok thanks to you all guys. I guess I'll have a pretty busy afternoon. I'll give back news as soon as I can.

No didn't talk about 6 bolts swap. (What is it anyway) I heard it very often on DSM forum.

 

[Strm Trpr]

Dude, you've got a lot of reading & searching to do if you don't know what a 6-bolt swap is.
The 6 bolt engines have 6 screws that hold the flywheel to the crank.

 

[megadan]

Dude, you've got a lot of reading & searching to do if you don't know what a 6-bolt swap is.

I know Iknow, I just got my car tuesday... gimme a break! :laugh:

 

[realhp=turbo]

I'll tell you and Im sure everyone here will agree, Haynes sucks. It leaves to many things out that alot of times you need to know. The Chiltons is more inclusive. Also from what you said about the info you got from the previous owner, it sounds more and more like the timing belt slipped a tooth or two. The clacking that you are hearing is probably your valves. This slippage can occur if the timing belt wasnt installed properly. It happened to me and Im sure alot of other people aswell. The timing belt has a procedure that must not be deviated from or you have the slack on the wrong side of the belt. Like I said before buy a CHILTONS and read, read, read. Haynes will do nothing but piss you off.
(well okay Im sure that there is some usefull info in that stupid book)
mike

 

[megadan]

Yeah i've been through 2 Haynes already for my previous cars Asuna sunfire and Frod probe and youre right. Sometimes they are missing important part but where can I find Chilton manual.

Could my valve be hitting piston and not be bent cause the compression is good

 

[megadan]

I forgot, if the timing belt wasn't well installed, can I see it by looking at the timing with a stobe light? Or I have to check under the timing cover?

 

[megadan]

TTT

NEVER

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