Valve Adjustment... - Nissan Forums : Nissan Forum
 
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#1 Old 08-27-2007, 05:55 AM
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Valve Adjustment...

Im hearing this rattling/ticking noise from the block and I'm 99% sure its a valve. I've been told my valve(s) need a manual adjustment, and that its "relatively" easy. So I'm gonna try and do this myself...I know its an intake valve because it ticks when I accelerate, so that maybe narrows it down to half...My question is how would I spot the odd one out if all the valves look to be in order...This may seem like a dumb question but can I run the car on idle with the cover off? Also I don't have an SES light on and the car seems to be running decent...Any help is appreciated...
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#2 Old 08-27-2007, 05:02 PM
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they are hydraulic valves......
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#3 Old 08-27-2007, 10:49 PM
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Does that mean nay on running the car with cover off...? If so, would you happen to know how to spot the messed up valve(s)
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#4 Old 08-27-2007, 11:53 PM
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what he is saying is there really is no valve adjustment because they are hydraulic. You can run it with the cover off if you like the idea of having oil going everywhere and dirt/dust going straight into the engine. An easier idea would be to use one of those stethascopes u can buy at discount or some other similiar place and listen to it through the valve cover. It'll give you idea which group the valve with the noise is coming from.



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#5 Old 08-28-2007, 03:18 PM
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they have shims that are used to adjust the valves, but they are probably not the cause of the noise... I would be looking at the the tensioner & or guides to start with or even a VTC solenoid... just ideas
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#6 Old 08-30-2007, 03:44 AM
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How about taking it to Nissan, spend the $90.00, and let a professional diagnose the problem? Adjusting a valve is harder than it sounds. And you will have to do all of them not just one. Each piston has to be in a certain position before you can check and adjust the valve for each cylinder. So I wouldn't recommend doing it yourself. People go to school for this stuff.
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#7 Old 08-30-2007, 02:22 PM
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How about taking it to Nissan, spend the $90.00, and let a professional diagnose the problem? Adjusting a valve is harder than it sounds. And you will have to do all of them not just one. Each piston has to be in a certain position before you can check and adjust the valve for each cylinder. So I wouldn't recommend doing it yourself. People go to school for this stuff.
+1...You dont wanna mess that shit up.

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#8 Old 09-04-2007, 12:50 PM
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Aight guys, well thanks 4 da help, it seems pretty obvious what i have to do. 90 bones aint to bad, im just dead broke right now, and i hate taking cars to peeps i dont tust...
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#9 Old 09-16-2007, 10:12 PM
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Just thought I'd give you all an update...So i took the car to what I thought was a trusty mechanic. There was a cracked spark plug, and the oil was a little low, but other than that the car seemed to have no other apparent problems. The mechanic insisted that a piece of hard carbon had built up on the top of a piston and suggested an induction cleaning to solve the problem...Anyways, so I was charged $120 for a diagnostic, induction cleaning, an oil change, and a new spark plug...this is why I don't trust these fools...So my car is still rattling/ticking, I believe its still a valve-related issue and my car is still misfiring. I'm sadly beginning to lose my trust in Nissan, I love my car, but this is not normal and I have treated the car very well. Now I have to save up again to take this thing to a dreaded dealership...yay
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#10 Old 10-07-2007, 09:26 AM
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Well, I'm really beginning to think the rattling noise may not be a valve, but simply a bad head gasket. I've read about some similar problems on the 02' and it ended up being a head gasket. I also noticed that if I hold the accelerator so far down, roughly 2.7-3000 RPM's, the sound simply "vanishes." Due to me just wanting to open this thing up cuz of that annoying sound, and the relatively low price of a head gasket I'm thinking of buying one. My question would be if its hard to install it, and if not is there instructions online?
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