Loud ticking/tapping/knocking from 1.6 IDI 81 jetta

[Krisverde]

So I was driving along, shifting through gears when all of a sudden this loud humming started and it kind of went away and I took it out of gear. Pulled in somewhere and now noticed the engine was making a loud ass ticking (besides the IP hahaha) now. I dunno if it's a rod knock or what. It almost sounds like it's coming from the head. Do the heads have issues with ticking?

Car runs fine and doesn't smoke anymore than it already does. Has oil in the engine too.

The only thing I have done recently was put a resealed IP on the car. Car has 193k on it also.



Link to vid
http://youtu.be/kFBKHE9rUpc

[pointynoggin]

If the sound goes away when you coast with you foot off the pedal it is probably not rod knock and a fuel noise

[bajacalal]

It's kind of hard to tell from the cell-phone audio and short clip but I think you have an exhaust leak.

How long has it been since you had your valves adjusted or your injectors checked?

[8v-of-fury]

Yes it sounds like mine did when I had the exhaust fall off and for ***s and giggles i also took the breather off.. Man did it sound pissed off

Other than that, the ticking I hear is what a normal IDI should sound like.

[CRSMP5]

timmingbelt cover? your brave...

[Krisverde]

Damn cell phone quality videos. It may be hard to get this on video. 
I didn't realize you needed to adjust the valves on this engine. That hasn't been checked along with the injectors. It does sound like a really bad lifter tick (kind of like my old passport) So maybe after doing the valve adjustment the sound will go away.

[bajacalal]

The valves are supposed to be adjusted fairly regularly, something like every 15,000 miles but I think you can push it to around 30,000 since I've not seem them change that much or that fast. And it's a fairly complicated procedure to adjust the valves in that it requires special tools and special shims (which are available if you do intend to do it yourself). IMO this is one of the huge drawbacks of these engines. Wouldn't hurt to have the injectors tested if you don't think it's ever been done. Get new injector washers when you put them back.

[Krisverde]

Yea I doubt the valves have been touched in...well forever. Ill probably just let the jetta sit until I get that issue taken care of and I sure hope it's the valves hahah. Gotta love cars. Get it running good and something else has to happen.

[Krisverde]

Any recommendations on where to get the stuff for valve adjustment?

Sent from my BlackBerry 9780 using Tapatalk

[745 turbogreasel]

I think you can use Volvo shims, but do measure  well if you try.
You don't really need anything but feelers and air or a magnet if you take the cam out, but he depressor tool is nice.

[Krisverde]

Dude if that's the case I have many Volvo shims laying around. Ill measure first. Also I have a new video...now the jetta idles like crap.

http://youtu.be/1yDrrXBtgow

[745 turbogreasel]

I thought you might.
one test;
idling, one at a time, loosen the fuel pipe at each injector enough that it misses- one will probably be different.
pull that injector, take it to a tractor shop,  and ask them to test it (unless you can see it is all messed up).

When removing the injector use a 27MM socket, big enough  at the top to not crush the bleed nipples, and pull the breaker bar toward the head only- away can break the injector boss off the head. 
You will need a new seal washer to put it back together, or find the thread here on reusing them.

[theman53]

I never verified it but someone once told me the air cooled shims were the same as ours...check it out first but it would seem vw being vw they would reuse everything they could.

[theman53]

See...I never have had the air cooled engine apart. I have never even checked the oil in one. That is why I said I only heard it and check. I love the fact we have people that have more experience on here and can confirm and deny things.

  That's funny.  The air-cooleds had rockers and adjuster screws. 

See...I never have had the air cooled engine apart. I have never even checked the oil in one. That is why I said I only heard it and check. I love the fact we have people that have more experience on here and can confirm and deny things. Now I know better and will talk to said friend about this next time.

[R.O.R-2.0]

I never verified it but someone once told me the air cooled shims were the same as ours...check it out first but it would seem vw being vw they would reuse everything they could.

water cooled gas VW shims..

peugeot shims

some other ones even.

all work in our engine.