ticking noise at warm idle???
10-15-2007, 01:17 PM
#1
Racer
Thread Starter
Join Date: Sep 2006
Location: UK
Posts: 371
Likes: 0
Received 0 Likes
on
0 Posts
ticking noise at warm idle???
noticed recently a ticking noise on idle on my car,,the tick is from around the engine somewhere and can be heard from above and below,not that loud but if you listen carefully it can be heard!!..approx a tick is heard maybe just more than one per second but is in as good as perfect rythmn!!
dosent seem to get louder when revs are increased and cant tell if it speeds up when revs are slightly increased because it is difficult to hear because of exhaust!!
at a wild guess i see a roller guide which the a/c belt runs on,,anybody had this fail or get noisy??
maybe gonna get the long screwdriver to the ear later to see if i can trace!!
dosent seem to get louder when revs are increased and cant tell if it speeds up when revs are slightly increased because it is difficult to hear because of exhaust!!
at a wild guess i see a roller guide which the a/c belt runs on,,anybody had this fail or get noisy??
maybe gonna get the long screwdriver to the ear later to see if i can trace!!
10-15-2007, 01:31 PM
#2
Rennlist Member
Not to long ago I had a ticking noise coming from a leaking gasket between the cilinder head and the heat exchanger manifold. Replaced all 6, ticking noise is gone. Look for my post "exploring my car". 
10-15-2007, 02:51 PM
#4
Racer
Thread Starter
Join Date: Sep 2006
Location: UK
Posts: 371
Likes: 0
Received 0 Likes
on
0 Posts
thanks guys for your suggestions,however im pretty sure it isnt that,,i know it is hard to suggest possible ideas which it could be without actually hearing it in the flesh!!
it maybe seems like metal hitting metal but quiet a sharp/snapping noise(not a low knock however)
it maybe seems like metal hitting metal but quiet a sharp/snapping noise(not a low knock however)
Trending Topics
10-15-2007, 03:50 PM
#9
Race Car
Join Date: Sep 2005
Location: England UK
Posts: 3,508
Likes: 0
Received 0 Likes
on
0 Posts
10-15-2007, 04:06 PM
#10
Burning Brakes
If it's a constant speed, directly related to revs, then I would probably say one or more valves need adjusting. Could also be heat exchangers - they can 'tick' when hot, and also very slight blows around the edge of welds etc. can sound like a ticking noise.
10-15-2007, 07:37 PM
#12
Burning Brakes
Join Date: Nov 2006
Location: Columbia, MD
Posts: 1,180
Likes: 0
Received 0 Likes
on
0 Posts
Doesn't this site already have a Porsche Doc?
10-16-2007, 05:03 AM
#14
Racer
Join Date: Jun 2004
Location: London
Posts: 308
Likes: 0
Received 0 Likes
on
0 Posts
Stu - from your description I'd say mine does exactly the same, I've always assumed its the tappets, which presumably need adjusting. My garage has asaid don't worry about it until the next service you're not doing any long term damage.
10-16-2007, 05:31 AM
#15
Burning Brakes
Join Date: Jun 2001
Location: Stockholm, Sweden
Posts: 1,232
Likes: 0
Received 0 Likes
on
0 Posts
I agree, it do make sense that this could be a loose valve.
On the other hand, it could be so many other things.
Lets say you have a hole in your headers, leaking exhaust into your heat exchanger and into the car...
Could be a walking rocker arm shaft, could be many things.
Raise the car up on one side, listen with a stethoscope (or a hose) from above and below you should be able to pin point the sound in a few mintues.
If it do come from the inside of one of the valve covers, just lift the car high up on that side, open that valve cover and check that the rocker arm shafts are in the right position (flush with the "shallow" side), check and adjust the valves if necessery, install (perhpas with a new gasket) valve cover and you are done.
I used a hose, found that my cam wheel driving the power steering pump was grinding the cover, fixed that.
Started the car again, much better, but found ticking sounds around header 1 and 4.
Drove to a mechanic for a second oppinion, he used a stethoscope, confirmed there was sound from cyl 1 and 4.
Found 3 holes in my headers inside the heat exchangers and a blown header gasket on cylinder 1.
Glad my heating was removed from the car, not sure that CO would have been that healthy.
Sorry for being such a "party p##per"..
On the other hand, it could be so many other things.
Lets say you have a hole in your headers, leaking exhaust into your heat exchanger and into the car...
Could be a walking rocker arm shaft, could be many things.
Raise the car up on one side, listen with a stethoscope (or a hose) from above and below you should be able to pin point the sound in a few mintues.
If it do come from the inside of one of the valve covers, just lift the car high up on that side, open that valve cover and check that the rocker arm shafts are in the right position (flush with the "shallow" side), check and adjust the valves if necessery, install (perhpas with a new gasket) valve cover and you are done.
I used a hose, found that my cam wheel driving the power steering pump was grinding the cover, fixed that.
Started the car again, much better, but found ticking sounds around header 1 and 4.
Drove to a mechanic for a second oppinion, he used a stethoscope, confirmed there was sound from cyl 1 and 4.
Found 3 holes in my headers inside the heat exchangers and a blown header gasket on cylinder 1.
Glad my heating was removed from the car, not sure that CO would have been that healthy.
Sorry for being such a "party p##per"..