Honda/Acura Tech Honda tech discussion.

Timing and Knock Sound

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Old Feb 10, 2006 | 09:49 AM
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Default Timing and Knock Sound

Ok this is going to be a real long post but here goes the problem. I put on a new a/c belt the other day, it broke off while driving and with it knocked off the alternator belt which wrapped its way around the bottom pulley, making the car die out. It wouldnt start up after that, so i towed it to a shop and they told me it's timing was off. After the timing was set (it was off 14 teeth on intake side and 12 on exhaust side) and a new alt. belt was put on, it ran nice but the belt squeaked when turned on and it sounded as if the bottom end was making a clicking kind of sound on acceleration. Last night, which was the day after I got the car out of the shop, the car starts losing charge, I push start it and after a couple tries it started up but the belt would not stop squeaking. After a little bit of driving it completely lost charge very suddenly and it wouldnt come on. After I got a jump from a passerby it started but the belt squeaked horribly loud and there was a loud knocking sound coming from where the cam gears were. I started it up this morning and same sound but white smoke was coming out of the oil cap when removed.

What could this be? At first I thought it was the timing belt tensioners but it isnt that they are tight and maybe the timing jumped again? Someone please help!
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Old Feb 10, 2006 | 09:56 AM
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White smoke comming from your oil cap sounds like rings or valve seals, The charging issue and belt noise looks/sounds to be a loose alt belt. You could of damaged the motor when the belt got jammed up by jumping timing so bad you may of bent a few valves.. My 1st question is can you do a compression test?? that will tell you alot, wether its bad or worse. the smoke comming from your cap is called blowbye and if its that bad then you really need to do a compression test and then we can go from there. hope this helps.
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Old Feb 10, 2006 | 10:11 AM
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yup sounds like you bent some valves especailly since you jumped timing so so bad.
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Old Feb 10, 2006 | 11:04 AM
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I looked up a compression test but it says I need a compression tester. I dont own one of those. When I took it to the shop the guy said he did a compression test and also said it was fine and that no valves were bent up too bad. Also I was pretty sure the squeaking sound was coming from the alt. belt but does anyone know about the knocking sound. It dosnt sound like it coming from the bottom end, it sounds like its coming from the cam gear area or somewhere near there. If anyone has any good advice feel free to call me because Im going crazy here!! 813 334-4028 - Alex
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Old Feb 10, 2006 | 11:10 AM
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And to make it worse, I think there is oil coming out of my short ram intake? I might be wrong but thats what it looks like.
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Old Feb 10, 2006 | 12:33 PM
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yup sounds like some bent valve's
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Old Feb 10, 2006 | 02:21 PM
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Hold a piece of paper to your exhaust. Does it try to suck it in? If so bent valves.
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Old Feb 10, 2006 | 03:45 PM
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Originally Posted by Alpha
Hold a piece of paper to your exhaust. Does it try to suck it in? If so bent valves.

ha ha this some good shit. sounds like a backyard type thing ( not trying to dis) but still good ish.
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Old Feb 10, 2006 | 03:54 PM
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Originally Posted by Old Renegade
ha ha this some good shit. sounds like a backyard type thing ( not trying to dis) but still good ish.
Gitter dun.

Two different compression test. Dry and wet. First do the dry test. Pour a tablespoon of oil down into the cylinders that were low. Compression test those cylinders again. If your numbers go up you probably have worn rings. If your numbers stays the same do a leak down test.

* Pull the oil fill cap. Air coming out? Worm rings or melted pistions
* Listen to the tailpipe. Air coming out? Exhaust valve(s) leaking
* Listen to the intake manifold. Hear air? Intake valve(s) leaking
* Pull the radiator cap. Air coming out? Compression leaking into the water jacket (Check adjacent cylinders. Head gasket in between cylinder, a cracked head and/or a cracked cylinder sleeve)

Gitter dun
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Old Feb 10, 2006 | 03:55 PM
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And I learned the paper technique from a mechanical engineer
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