Ticking noise from cam cover - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

aznpoopy · 03-11-2004, 10:51 AM

i'm not well read on sohc chain rattle but i know its a SERIOUS problem. you should really do some research and fix that asap. this doesn't sound totally like your problem ... but here ya go.

240sx.org FAQ on SOHC rattle :

(Regarding SOHC engines)

Q: 1) is the '89 240SX SE an 'interference' engine (timing belt goes, valves and pistons crash catostrophically) or not?

A: Yes. If your chain breaks (never happens) or starts jumping teeth on the gears (more on this later) it can munch the valves.

> Tony Iannarelli wrote:
> >
> > What are the symptoms of the Timing Chain going bad?
>
> Well, it's not so much that the chain goes bad, but the tensioner
> gets weak and the guides break into little bits. This is a Nissan
> technical service bulletin, which means it's a known problem and
> there are upgraded parts available to correct it, but it's not a
> recall, so you have to pay to have it done.
>
> The usual symptoms are that the engine rattles like hell when you
> first start it (chain flapping around) and lacks power (slack chain
> causing camshaft timing to drift around unpredictably).
>
> It's a 10-12 hour job for your typical do-it-yourselfer, but it's one
> of the more annoying jobs I've done on my car. If you can afford it,
> I would advise you to have a shop do it -- and the independent shops
> do just as good a job as the dealerships, for less money.

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03-11-2004, 10:51 AM	#11
aznpoopy Post Whore! Join Date: Mar 2003 Location: New Jersey Age: 44 Posts: 5,013 Trader Rating: (1) Feedback Score: 1 reviews	i'm not well read on sohc chain rattle but i know its a SERIOUS problem. you should really do some research and fix that asap. this doesn't sound totally like your problem ... but here ya go. 240sx.org FAQ on SOHC rattle : (Regarding SOHC engines) Q: 1) is the '89 240SX SE an 'interference' engine (timing belt goes, valves and pistons crash catostrophically) or not? A: Yes. If your chain breaks (never happens) or starts jumping teeth on the gears (more on this later) it can munch the valves. > Tony Iannarelli wrote: > > > > What are the symptoms of the Timing Chain going bad? > > Well, it's not so much that the chain goes bad, but the tensioner > gets weak and the guides break into little bits. This is a Nissan > technical service bulletin, which means it's a known problem and > there are upgraded parts available to correct it, but it's not a > recall, so you have to pay to have it done. > > The usual symptoms are that the engine rattles like hell when you > first start it (chain flapping around) and lacks power (slack chain > causing camshaft timing to drift around unpredictably). > > It's a 10-12 hour job for your typical do-it-yourselfer, but it's one > of the more annoying jobs I've done on my car. If you can afford it, > I would advise you to have a shop do it -- and the independent shops > do just as good a job as the dealerships, for less money.