| [ Total Views: 887 | Total Replies: 17 | Thread Id: 51195 ] |
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 76camper
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 posted on April 20th, 2006 at 02:54 PM |
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Type4 ticking noise??? UPDATED!
hey guyz,
My stock twin carb 2L type 4 engine has developed a slight ticking noise from the #1 cylinder head area. Im pretty sure its not valve ticking, sure
doesnt sound like it. It sounds more like a real faint pinging noise, im guessing its an exhaust leak but what might be some other possibilities?
cheers
[ Edited on 6-5-2006 by 76camper ]
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 Bizarre
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| posted on April 20th, 2006 at 03:55 PM |
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Hydraulic lifter??
Futue te ipsum!!!
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76camper
Fahrvergnugen
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| posted on April 20th, 2006 at 05:02 PM |
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nah no hydraulic lifters, i just went out and checked valves, all seems to be moving smoothly. Upon closer inspection i dont think its an exhaust
leak, it sounds more like something metal tapping on the head.... any ideas?
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pod
A.k.a.: paul mrvw061
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| posted on April 20th, 2006 at 08:58 PM |
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loose head studs
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Mike Hamper
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| posted on April 20th, 2006 at 09:02 PM |
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I suspect that the entire motor is cactus. The only sane solution is to park the vehicle in a paddock and set fire to it. That will stop those pesky
noises.
[ Edited on 20-4-2006 by Mike Hamper ]
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76camper
Fahrvergnugen
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| posted on April 20th, 2006 at 09:58 PM |
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| Quote: |
I suspect that the entire motor is cactus.
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hmmm didnt they ban happy hour already?
I am thinking about retorqueing the heads... but wana elimate all other possibilites first.
cheers
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Bizarre
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| posted on April 21st, 2006 at 10:27 AM |
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rocker tapping the cover??
recessed valve??
Futue te ipsum!!!
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kombikim
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| posted on April 21st, 2006 at 10:36 AM |
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just a suggestion to narrow down problem, remove plug lead to that cylinder & see if there is a difference in noise
I also wonder if it is possible that it may be fuel pump, which is very close to same area
Please, I need drivers side window regulator (winder mechanism) for my '54  |
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76camper
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| posted on April 21st, 2006 at 03:19 PM |
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bizarre can you tell me more about a recessed valve?
and kombi kim i didnt think bout the fuel pump, will look into it. keep the suggestions coming!! this noise is frustrating me!
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76camper
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| posted on April 21st, 2006 at 05:43 PM |
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just adjusted the valves... no difference. im pretty sure its not the fuel pump.
I disconnected the spark plug and no difference, just that the noise was less muffled... any ideas??? im gana pull the plug tomoro...
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Bizarre
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| posted on April 21st, 2006 at 05:52 PM |
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| Quote: | Originally
posted by 76camper
bizarre can you tell me more about a recessed valve?
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If a valve is pushed into the head then the rocker rocks further back.
To get the gap back yiou need to set the adjuster further back.
could have gone far enough back it is hitting the rocker cover??
Those covers are VERY flat
have a read here
http://www.shoptalkforums.com/viewtopic.php?t=4317&sid=d65a7025e13c83d1735eb4...
sort of explains it
[ Edited on 21-4-2006 by Bizarre ]
Futue te ipsum!!!
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76camper
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| posted on April 21st, 2006 at 08:52 PM |
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well valves havent been drastically out of adjustment when i have adjusted them so im guessing thats not the problem... it is a possibility tho that a
valve seats have come loose and is rattling around a bit... the engine was rebuilt about 10 000k ago so i hope that this isnt the case.... had rebuilt
heads put it with fresh valve seats!
Is there a way to check for loose valve seats?
thanks for the info guyz, keep it coming
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kombidaze
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| posted on April 22nd, 2006 at 07:02 PM |
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you will know if a seat is loose or starting to recess by 1.lousy performance especially up hills, 2. constant readjustment of valve clearance i.e
every 100klm or so 3. when it gets bad a poping sound out the exhaust 4. when it gets real bad a seized motor.
I've personally had a motor seize because an inlet valve seat came loose.
I've got a 2lt motor right now with a recessed inlet valve seat I have to adjust the clearance every 200ks with very ordinary performance.
My brother just installed 2 new AMC heads on his 1.8lt an inlet valve seat had recessed so much. The valve had pounded the seat up into the head
reducing it to about half its original height it had lasted 5000ks he was adjusting the valve clearance every day.
If your performance isn't suffering in any way and there are no obvious mechanical changes that you have observed then I would say your o.k
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bus914
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| posted on April 22nd, 2006 at 07:33 PM |
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i had a similar noise, turned out to be the thunderbird muffler. the end cap came loose.
[ Edited on 22-4-2006 by bus914 ]
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76camper
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| posted on April 23rd, 2006 at 09:30 AM |
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thanks,
yea performance and everything hasnt been affected at all just this annoying freakin noise! it doesnt seem to be getting louder or anything just a
constant 'clack/tick'.... im gana pull the plugs, see what there like and do a comp test also this arvo... hopefully reveals seats are fine, fingers
crossed.... keep the ideas coming guyz! very useful for me
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Samblers
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| posted on April 27th, 2006 at 10:58 AM |
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see my posts about a type IV engine that develped a tapping noise... apparently its pretty unusual though
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76camper
Fahrvergnugen
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| posted on April 27th, 2006 at 01:10 PM |
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Yea found it. Its not so much a bearing noise tho more a tapping around the head... i found this sound file http://home.arcor.de/silke.fokken/sounds/camnoise.wav
which i think is making the noise. But im starting to get used to the noise and its getting harder to pin point lol which is frustrating.... Hope its
not a rebuild job 
[ Edited on 27-4-2006 by 76camper ]
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76camper
Fahrvergnugen
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| posted on May 6th, 2006 at 05:05 PM |
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Update:-
Used the screw driver stethoscope trick where u press one end of a screw driver to your ear and the other to the part your listening to while blocking
your other ear. I touched the screw driver on the oil pump to see if maybe the cam gear may have been hitting it, but it sounded fine, could just hear
the gears in the oil pump running.
touched it on the sump, sounded fine
touched it on the exhaust header of the #2 cylinder (??) (the rear rhs cylinder) and could hear the noise.
touched it on the exhaust header of oppsite cylinder and could not hear the noise.
touched it on the valve cover of the #1/2 cylinder head and could hear the noise
touched it on the opposite valve cover and could not.
This was after i tighten the rocker assembly's a little... made very little difference.
So im thinking maybe my rocker assembly is screwed, is this common? Is there anything i can check?
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